A cosmic explosion: SN 2017cbv
•
0 likes•217 views
This document discusses Type Ia supernovae and their importance for measuring cosmic distances. Type Ia supernovae occur when a white dwarf star exceeds its mass limit through matter accretion from a binary companion star and undergoes runaway nuclear fusion. Their relatively uniform brightness makes them useful "standard candles" to determine distances across the universe. The author details how light curves of Type Ia supernovae were analyzed from telescope data to determine distances. Precise distance measurements allow constraining the expansion rate of the universe and probing dark energy, making Type Ia supernovae crucial for understanding cosmology.
Report
Share
Report
Share
Download to read offline
Recommended
Kathryn wheel a_spectacular_galaxy_collision_discoverd_in_the_galactic_neighb...
Uma espetacular colisão de galáxias foi descoberta além da Via Láctea. O sistema mais próximo já descoberto, a identificação foi anunciada por uma equipe de astrônomos liderada pelo Professor Quentin Parker da Universidade de Hong Kong e pelo Professor Albert Zijlstra na Universidade de Manchester.
A galáxia está a 30 milhões de anos-luz de distância, o que significa que ela é relativamente próxima. Ela foi chamada de Roda de Kathryn, em homenagem à sua semelhança com o famoso fogo de artifício e também em homenagem à esposa do coautor do trabalho.
Esses sistemas são muito raros e nascem da colisão entre duas galáxias de tamanhos similares. As ondas de choque geradas na colisão comprimem o reservatório de gás em cada galáxia e disparam a formação de novas estrelas. Isso cria um espetacular anel de intensa emissão, e ilumina o sistema, do mesmo modo que a Roda Catherine ilumina a noite num show de fogos de artifício.
As galáxias crescem através de colisões, mas é raro registrar esse processo acontecendo, e é extremamente raro ver o anel da colisão em progresso. Pouco mais de 20 sistemas com anéis completos são conhecidos.
InfantsoftheUniverseDeterminingthechemicalCompositionAgeandDistanceofOpenStar...
The document analyzes data from the open star cluster M11 to determine its fundamental properties. Photometry of stars in M11 was performed using images taken through two filters with a telescope. A color-magnitude diagram was created and fit with theoretical models, revealing M11 to be around 250 million years old, located 5930 light years away, and having a similar iron-to-hydrogen ratio as the sun. Analysis of independent star clusters provides insights into patterns of galaxy formation and evolution.
11 review clickers
This document contains multiple choice questions about Jupiter and the Jovian planets from Chapter 11 of The Cosmic Perspective textbook. It includes questions about the size of Earth compared to Jupiter, how long it takes to travel from Earth to Jupiter, the composition and structure of Jupiter's atmosphere and interior, Jupiter's magnetic field, weather patterns on Jupiter, tidal heating of Jovian moons like Io, and characteristics of Saturn such as its density.
International astronomy from the Moon
International Astronomy from the Moon
Southeast Asia and Beyond
The document discusses conducting astronomy from the moon, including as a shield from the sun/earth, as a stable platform, and for access from a lunar base. It outlines past and current lunar astronomy studies and proposals from agencies like NASA, ESA, China, and opportunities for involvement from Southeast Asian countries. Key points include China's Chang'e lunar telescope capturing over 32,000 images, and potential for commercial communications from the moon to expand coverage. Moon plans from agencies like NASA, JAXA, ISRO, KARI, and CSA are summarized.
ILOA Galaxy Forum SEA Thailand -- NEO and Space Debris, Kirdkao
The 4th Regional Galaxy Forum Southeast Asia is taking place at the Science Centre for Education at the Bangkok Planetarium in collaboration between ILOA, National Astronomical Research Institute of Thailand (NARIT) and Geo-Informatics and Space Technology Development Agency (GISTDA).
Thailand is a leader in the region for Astronomy and Satellite Technology.
NARIT is a national research organization for astronomy in Thailand enabling the development of a collaborative research network both regionally and globally, and aiming at developing and strengthening knowledge in astronomy at an international level. They also ally with public and private observatories and other institutions around the World to pursue excellence in scientific research, education and public outreach.
06 lecture outline
Telescopes allow astronomers to observe the universe in different wavelengths of light. Ground-based telescopes are limited by Earth's atmosphere, so many telescopes have been placed in space. There are two main types of telescopes - refracting telescopes which use lenses and reflecting telescopes which use mirrors. Multiple telescopes can work together using interferometry to achieve the resolution of a larger single telescope. Astronomers use telescopes to take images of celestial objects, perform spectroscopy to analyze light, and monitor changes over time.
Deep nearinfrared survey_carina_nebula
This document summarizes the results of a deep near-infrared survey of the Carina Nebula complex using the HAWK-I instrument on the VLT. The survey imaged an area of 0.36 square degrees down to magnitudes of J=23, H=22, and Ks=21, detecting over 600,000 infrared sources. Color-magnitude diagrams of the sources were analyzed to determine properties of the low-mass stellar population such as ages and masses. The survey found that about 3200 sources have masses above 1 solar mass, consistent with expectations from the initial mass function. It also found that about half of the young stars in Carina are in a widely distributed, non-clustered configuration. Six
Exploring the Universe with Blue Waters
1. The document discusses how large-scale high-performance computing like Blue Waters has contributed to astronomy, astrophysics, and space science over the past five years.
2. It provides examples of science done on Blue Waters including modeling planet formation, supernovae explosions, black hole mergers, galaxy formation, and cosmic reionization.
3. Blue Waters has enabled advances across scales from modeling the solar wind and Earth's magnetosphere to simulating the first galaxies in the early universe.
Recommended
Kathryn wheel a_spectacular_galaxy_collision_discoverd_in_the_galactic_neighb...
Uma espetacular colisão de galáxias foi descoberta além da Via Láctea. O sistema mais próximo já descoberto, a identificação foi anunciada por uma equipe de astrônomos liderada pelo Professor Quentin Parker da Universidade de Hong Kong e pelo Professor Albert Zijlstra na Universidade de Manchester.
A galáxia está a 30 milhões de anos-luz de distância, o que significa que ela é relativamente próxima. Ela foi chamada de Roda de Kathryn, em homenagem à sua semelhança com o famoso fogo de artifício e também em homenagem à esposa do coautor do trabalho.
Esses sistemas são muito raros e nascem da colisão entre duas galáxias de tamanhos similares. As ondas de choque geradas na colisão comprimem o reservatório de gás em cada galáxia e disparam a formação de novas estrelas. Isso cria um espetacular anel de intensa emissão, e ilumina o sistema, do mesmo modo que a Roda Catherine ilumina a noite num show de fogos de artifício.
As galáxias crescem através de colisões, mas é raro registrar esse processo acontecendo, e é extremamente raro ver o anel da colisão em progresso. Pouco mais de 20 sistemas com anéis completos são conhecidos.
InfantsoftheUniverseDeterminingthechemicalCompositionAgeandDistanceofOpenStar...
The document analyzes data from the open star cluster M11 to determine its fundamental properties. Photometry of stars in M11 was performed using images taken through two filters with a telescope. A color-magnitude diagram was created and fit with theoretical models, revealing M11 to be around 250 million years old, located 5930 light years away, and having a similar iron-to-hydrogen ratio as the sun. Analysis of independent star clusters provides insights into patterns of galaxy formation and evolution.
11 review clickers
This document contains multiple choice questions about Jupiter and the Jovian planets from Chapter 11 of The Cosmic Perspective textbook. It includes questions about the size of Earth compared to Jupiter, how long it takes to travel from Earth to Jupiter, the composition and structure of Jupiter's atmosphere and interior, Jupiter's magnetic field, weather patterns on Jupiter, tidal heating of Jovian moons like Io, and characteristics of Saturn such as its density.
International astronomy from the Moon
International Astronomy from the Moon
Southeast Asia and Beyond
The document discusses conducting astronomy from the moon, including as a shield from the sun/earth, as a stable platform, and for access from a lunar base. It outlines past and current lunar astronomy studies and proposals from agencies like NASA, ESA, China, and opportunities for involvement from Southeast Asian countries. Key points include China's Chang'e lunar telescope capturing over 32,000 images, and potential for commercial communications from the moon to expand coverage. Moon plans from agencies like NASA, JAXA, ISRO, KARI, and CSA are summarized.
ILOA Galaxy Forum SEA Thailand -- NEO and Space Debris, Kirdkao
The 4th Regional Galaxy Forum Southeast Asia is taking place at the Science Centre for Education at the Bangkok Planetarium in collaboration between ILOA, National Astronomical Research Institute of Thailand (NARIT) and Geo-Informatics and Space Technology Development Agency (GISTDA).
Thailand is a leader in the region for Astronomy and Satellite Technology.
NARIT is a national research organization for astronomy in Thailand enabling the development of a collaborative research network both regionally and globally, and aiming at developing and strengthening knowledge in astronomy at an international level. They also ally with public and private observatories and other institutions around the World to pursue excellence in scientific research, education and public outreach.
06 lecture outline
Telescopes allow astronomers to observe the universe in different wavelengths of light. Ground-based telescopes are limited by Earth's atmosphere, so many telescopes have been placed in space. There are two main types of telescopes - refracting telescopes which use lenses and reflecting telescopes which use mirrors. Multiple telescopes can work together using interferometry to achieve the resolution of a larger single telescope. Astronomers use telescopes to take images of celestial objects, perform spectroscopy to analyze light, and monitor changes over time.
Deep nearinfrared survey_carina_nebula
This document summarizes the results of a deep near-infrared survey of the Carina Nebula complex using the HAWK-I instrument on the VLT. The survey imaged an area of 0.36 square degrees down to magnitudes of J=23, H=22, and Ks=21, detecting over 600,000 infrared sources. Color-magnitude diagrams of the sources were analyzed to determine properties of the low-mass stellar population such as ages and masses. The survey found that about 3200 sources have masses above 1 solar mass, consistent with expectations from the initial mass function. It also found that about half of the young stars in Carina are in a widely distributed, non-clustered configuration. Six
Exploring the Universe with Blue Waters
1. The document discusses how large-scale high-performance computing like Blue Waters has contributed to astronomy, astrophysics, and space science over the past five years.
2. It provides examples of science done on Blue Waters including modeling planet formation, supernovae explosions, black hole mergers, galaxy formation, and cosmic reionization.
3. Blue Waters has enabled advances across scales from modeling the solar wind and Earth's magnetosphere to simulating the first galaxies in the early universe.
11 lecture outline
- Jupiter, Saturn, Uranus, and Neptune all have ring systems, though Saturn's are the largest and brightest.
- Saturn's rings are composed of numerous tiny particles orbiting in thin, flat disks around the planet's equator. Gaps in the rings are caused by interactions with small moonlets.
- The jovian planets likely acquired their ring particles from collisions with asteroids and comet fragments in their early histories. Tidal forces from nearby moons help maintain the rings by grinding larger objects into fine dust.
Foing vienna astromoon galaxy forum 18 sept 2020
This document discusses astronomy projects from the Moon including:
1) Robotic telescopes could observe from the Moon in all wavelengths without atmospheric interference and study the solar system.
2) The ExoGeoLab project developed a lunar lander and remote-controlled telescope to demonstrate astronomy and remote supervision from the Moon.
3) Upcoming projects include the Chang'E 3 telescope on the Moon, radio astronomy from orbiters and small landers, and future observatories at human outposts. Liquid mirror telescopes are also proposed to take advantage of the Moon's environment.
Astronomy Photographer of the Year 2016: Winners & Finalists
The document announces the winners of the 2017 Insight Astronomy Photographer of the Year competition. It lists the first, second, and third place winners in categories such as Our Sun, Aurorae, People & Space, Skyscapes, Our Moon, Stars & Nebulae, Planets, Comets & Asteroids, Galaxies, and Young Astronomy Photographer of the Year. The competition received a record number of over 4,500 entries from 80 countries. The overall winner was Yu Jun of China for the photo "Baily's Beads".
God of All Creation
Sometimes taking a moment to appreciate the beauty, awesomeness and complexity of creation can reconnect us with our Creator and deepen our faith. We invite you to view our latest slideshow “God of All Creation” full of breathtaking images from space.
09 lecture outline
This document summarizes a chapter about planetary geology. It discusses:
- The interiors of terrestrial planets and how seismic waves reveal Earth's layered structure.
- Geological processes that shape planetary surfaces, like impact cratering, volcanism, tectonics, and erosion.
- How the amount of impact craters on a surface reveals its geological age.
- The unique geology of specific planets, including the Moon's maria, Mercury's shrinkage, and evidence that water flowed on ancient Mars.
- How plate tectonics continually shapes Earth's surface through seafloor spreading, subduction, and mountain building.
Gf europe 2018 vienna iloa ppt
The document summarizes the International Lunar Observatory Association's (ILOA) plans for astronomy observations from the Moon. The ILOA plans to establish a multi-function lunar observatory and help build a lunar base. Key missions discussed include collaborating with Chang'e-3 in China to image galaxies, a precursor mission in 2018, and the ILO-1 South Pole mission in 2020-2022 to conduct astronomy and communications from the lunar south pole. The ILOA works with partners around the world and hopes to advance 21st century education in astronomy and exploration.
Morphologies of Wolf-Rayet Planetary Nebulae based on IFU Observations
Talk presented at Asymmetrical Post-Main-Sequence Nebulae 8 (APN8): the Shaping of Stellar Outflows (Virtual), October 8, 2021, https://doi.org/10.6084/m9.figshare.16850317
Uv lunar observatory ana gomez castro
The document discusses the potential for lunar ultraviolet observatories. It notes that the Moon provides a stable location with no atmosphere to observe UV radiation from sources like the intergalactic medium, exoplanets, and the Earth's magnetosphere and exosphere. A proposed mission called EarthASAP would use a cubesat in lunar orbit to produce the first 3D map of the Earth's exosphere and monitor interactions between the Earth and solar wind. Such observations from the Moon's perspective could provide important data for studying exoplanets and space weather effects. The document outlines the science goals and technological requirements for EarthASAP and lunar UV observatories more broadly.
Lunar observatories 2018-08-23-ilo-vienna
This document discusses the potential for radio astronomy on the far side of the Moon. It notes that the lunar environment provides shielding from radio interference and a stable surface for simple antenna arrays. The document proposes that very low frequency radio astronomy to study the "Dark Ages" and "Cosmic Dawn" of the early universe could best be performed from the radio-protected zone of the lunar far side using a phased array of dipole antennas. It describes the Netherlands-Chinese Low-Frequency Explorer (NCLE) lunar satellite experiment onboard the Chinese Chang'E 4 relay satellite as a first step towards pathfinding radio astronomy capabilities on the far side of the Moon.
Galaxy forum vienna_2018_cv1
This document discusses the history and potential future of astronomy from the Moon. It outlines how the Moon provides opportunities for astronomy due to its lack of atmosphere and long lunar days. Telescopes on the Apollo missions and Chang'e 3 lander took some early ultraviolet images from the Moon. The document argues that an observatory on the far side of the Moon could benefit from radio quiet skies and that the low gravity would allow for lighter telescope structures. It compares this to how satellites revolutionized astronomy and suggests space-based interferometry and gravitational wave detection as potential future areas for lunar astronomy.
Week Plan Sem Ii
The document outlines the schedule and content for developing a Computer Aided Instruction (CAI) package on astronomy topics from November 2010 to April 2010. It includes developing chapters on the Milky Way, the solar system, galaxies, and stars over different dates. Each chapter will cover related definitions, classifications, structures, and life cycles. Tutorials, games and interactive elements will be incorporated. The package will be finalized with abstract, acknowledgements and references in March before preparation and presentation in April.
Chapter 19 – formation of the universe
The document summarizes theories about the formation and evolution of the universe:
1) The Big Bang theory proposes that approximately 13.8 billion years ago, all matter in the observable universe was condensed into an incredibly dense singularity that suddenly exploded, causing the universe to expand rapidly and form light elements.
2) As the universe expanded, gravity caused matter to condense into the first stars and galaxies. Observations of redshifts in light from distant galaxies provide evidence the universe continues expanding today.
3) Current theories suggest three possible ultimate fates for the universe depending on its overall density - continued expansion, eventual contraction, or a stable flat state.
Alfalfa discovery of_the_most_metal_poor_gas_rich_galaxy_known_agc_198691
We present spectroscopic observations of the nearby dwarf galaxy AGC 198691. This object is part
of the Survey of H I in Extremely Low-Mass Dwarfs (SHIELD) project, which is a multi-wavelength
study of galaxies with H I masses in the range of 106-107:2 M discovered by the ALFALFA survey.
We have obtained spectra of the lone H II region in AGC 198691 with the new high-throughput
KPNO Ohio State Multi-Object Spectrograph (KOSMOS) on the Mayall 4-m as well as with the Blue
Channel spectrograph on the MMT 6.5-m telescope. These observations enable the measurement of the
temperature-sensitive [O III]4363 line and hence the determination of a \direct" oxygen abundance
for AGC 198691. We nd this system to be an extremely metal-de cient (XMD) system with an
oxygen abundance of 12+log(O/H) = 7.02 0.03, making AGC 198691 the lowest-abundance starforming
galaxy known in the local universe. Two of the ve lowest-abundance galaxies known have
been discovered by the ALFALFA blind H I survey; this high yield of XMD galaxies represents a
paradigm shift in the search for extremely metal-poor galaxies.
Science project
The document discusses Pluto's reclassification from a planet to a dwarf planet by the International Astronomical Union (IAU) in 2006. It provides background on Pluto's discovery in 1930 and its initial classification as the ninth planet. It then explains that the IAU formed a committee to define what qualifies as a planet after struggling to do so. The committee established three criteria for planet status, and based on these criteria, Pluto did not clear its orbital path of other objects and was reclassified as a dwarf planet. The document supports the original hypothesis that classifications in science are continually evolving with new discoveries and information.
Stellar evolution
1. Stellar evolution begins with the fragmentation of massive molecular clouds into smaller masses, each initiating their own star formation process.
2. As clouds collapse under gravity, the gravitational energy is transformed to radiation through molecular hydrogen and dust grains, causing an isothermal collapse. Further collapse becomes adiabatic as stars become opaque.
3. Stars sustain themselves through nuclear fusion, with more massive stars having shorter lifespans than less massive stars due to the greater energy requirements.
4. Stellar remnants include white dwarfs, neutron stars, pulsars, and black holes, depending on the star's original mass.
4.2 Stars have Life Cycles
Stars change over their life cycles depending on their mass. Low-mass stars like our Sun remain on the main sequence for billions of years, slowly fusing hydrogen into helium. Eventually they expand into red giants and later cool into white dwarfs. High-mass stars burn through their fuel quickly and explode as supernovae after millions of years, leaving behind neutron stars or black holes. All stars form from contracting nebulae of gas and dust.
The Ever Surprising Universe
This document summarizes the history of discoveries about the expanding universe and the unexpected findings that have challenged our understanding, including the accelerating expansion driven by dark energy. It discusses early models proposed by Einstein and others, the evidence from the cosmic microwave background and supernovae observations in the late 20th century that revealed the universe is expanding and accelerating, and outstanding questions about dark energy and dark matter that remain areas of active research today.
How does a Global Navigation Satellite know where it is to tell you where you...
*** Presented by Martin Wass at State of the Map 2013
*** For the video of this presentation please see http://lanyrd.com/2013/sotm/scpktb/
*** Full schedule available at http://wiki.openstreetmap.org/wiki/State_Of_The_Map_2013
The satellites in Global Navigation Satellite Systems get their position data regularly updated from ground stations. But how do ground stations 'know' where they are, and relative to what? The Airy transit circle at Greenwich once defined the Prime Meridian and the spinning Earth the Equator. We now know the tectonic plate Greenwich sits on is moving and the Earth wobbles... Any defined datum causes difficulties when moving away from the vicinity, say to Mars. Using several different datums raises other problems. When everything is sliding around, how do we define and use a co-ordinate system that works?
Extended Essay
This document is a 33-page extended essay by Ethan Dodd evaluating the effect of automobiles and advanced high strength steel on the geomagnetic field. The essay includes two experiments conducted in Prague, Czech Republic measuring changes in the magnetic field from vehicles and a steel cube. The experiments found that larger masses of the objects weakened the magnetic field more in the surrounding area, with the largest vehicle tested able to weaken the field by approximately 2000nT.
Astronomy Photographer of the Year 2015 (shortlisted images selected)
This document provides information about the Astronomy Photographer of the Year 2015 competition, including shortlisted images, category winners, and past winners. Some of the shortlisted images show nebulae, galaxies, auroras, comets, and the moon. Information is provided about the photographers and locations where the photos were taken. Past competition winners demonstrated impressive shots of the Milky Way, solar eclipses, and planetary conjunctions.
What are dead stars good for?
A lesson I gave to high school students during my time at Yale, with the Yale SPLASH student organisation.
Week 1 Lesson 1.pptx
The document provides information about the life cycle and evolution of stars from their formation in nebulae to their death. It discusses the various stages stars pass through such as the protostar stage where nuclear fusion begins, the main sequence stage where stars spend most of their lives fusing hydrogen, and later stages where they expand into red giants or explode as supernovae, leaving behind remnants like neutron stars or black holes. The stages discussed include nebula, protostar, main sequence star, red giant, white dwarf, supernova, neutron star, and black hole. Examples and diagrams are provided to illustrate each stage of a star's life.
More Related Content
What's hot
11 lecture outline
- Jupiter, Saturn, Uranus, and Neptune all have ring systems, though Saturn's are the largest and brightest.
- Saturn's rings are composed of numerous tiny particles orbiting in thin, flat disks around the planet's equator. Gaps in the rings are caused by interactions with small moonlets.
- The jovian planets likely acquired their ring particles from collisions with asteroids and comet fragments in their early histories. Tidal forces from nearby moons help maintain the rings by grinding larger objects into fine dust.
Foing vienna astromoon galaxy forum 18 sept 2020
This document discusses astronomy projects from the Moon including:
1) Robotic telescopes could observe from the Moon in all wavelengths without atmospheric interference and study the solar system.
2) The ExoGeoLab project developed a lunar lander and remote-controlled telescope to demonstrate astronomy and remote supervision from the Moon.
3) Upcoming projects include the Chang'E 3 telescope on the Moon, radio astronomy from orbiters and small landers, and future observatories at human outposts. Liquid mirror telescopes are also proposed to take advantage of the Moon's environment.
Astronomy Photographer of the Year 2016: Winners & Finalists
The document announces the winners of the 2017 Insight Astronomy Photographer of the Year competition. It lists the first, second, and third place winners in categories such as Our Sun, Aurorae, People & Space, Skyscapes, Our Moon, Stars & Nebulae, Planets, Comets & Asteroids, Galaxies, and Young Astronomy Photographer of the Year. The competition received a record number of over 4,500 entries from 80 countries. The overall winner was Yu Jun of China for the photo "Baily's Beads".
God of All Creation
Sometimes taking a moment to appreciate the beauty, awesomeness and complexity of creation can reconnect us with our Creator and deepen our faith. We invite you to view our latest slideshow “God of All Creation” full of breathtaking images from space.
09 lecture outline
This document summarizes a chapter about planetary geology. It discusses:
- The interiors of terrestrial planets and how seismic waves reveal Earth's layered structure.
- Geological processes that shape planetary surfaces, like impact cratering, volcanism, tectonics, and erosion.
- How the amount of impact craters on a surface reveals its geological age.
- The unique geology of specific planets, including the Moon's maria, Mercury's shrinkage, and evidence that water flowed on ancient Mars.
- How plate tectonics continually shapes Earth's surface through seafloor spreading, subduction, and mountain building.
Gf europe 2018 vienna iloa ppt
The document summarizes the International Lunar Observatory Association's (ILOA) plans for astronomy observations from the Moon. The ILOA plans to establish a multi-function lunar observatory and help build a lunar base. Key missions discussed include collaborating with Chang'e-3 in China to image galaxies, a precursor mission in 2018, and the ILO-1 South Pole mission in 2020-2022 to conduct astronomy and communications from the lunar south pole. The ILOA works with partners around the world and hopes to advance 21st century education in astronomy and exploration.
Morphologies of Wolf-Rayet Planetary Nebulae based on IFU Observations
Talk presented at Asymmetrical Post-Main-Sequence Nebulae 8 (APN8): the Shaping of Stellar Outflows (Virtual), October 8, 2021, https://doi.org/10.6084/m9.figshare.16850317
Uv lunar observatory ana gomez castro
The document discusses the potential for lunar ultraviolet observatories. It notes that the Moon provides a stable location with no atmosphere to observe UV radiation from sources like the intergalactic medium, exoplanets, and the Earth's magnetosphere and exosphere. A proposed mission called EarthASAP would use a cubesat in lunar orbit to produce the first 3D map of the Earth's exosphere and monitor interactions between the Earth and solar wind. Such observations from the Moon's perspective could provide important data for studying exoplanets and space weather effects. The document outlines the science goals and technological requirements for EarthASAP and lunar UV observatories more broadly.
Lunar observatories 2018-08-23-ilo-vienna
This document discusses the potential for radio astronomy on the far side of the Moon. It notes that the lunar environment provides shielding from radio interference and a stable surface for simple antenna arrays. The document proposes that very low frequency radio astronomy to study the "Dark Ages" and "Cosmic Dawn" of the early universe could best be performed from the radio-protected zone of the lunar far side using a phased array of dipole antennas. It describes the Netherlands-Chinese Low-Frequency Explorer (NCLE) lunar satellite experiment onboard the Chinese Chang'E 4 relay satellite as a first step towards pathfinding radio astronomy capabilities on the far side of the Moon.
Galaxy forum vienna_2018_cv1
This document discusses the history and potential future of astronomy from the Moon. It outlines how the Moon provides opportunities for astronomy due to its lack of atmosphere and long lunar days. Telescopes on the Apollo missions and Chang'e 3 lander took some early ultraviolet images from the Moon. The document argues that an observatory on the far side of the Moon could benefit from radio quiet skies and that the low gravity would allow for lighter telescope structures. It compares this to how satellites revolutionized astronomy and suggests space-based interferometry and gravitational wave detection as potential future areas for lunar astronomy.
Week Plan Sem Ii
The document outlines the schedule and content for developing a Computer Aided Instruction (CAI) package on astronomy topics from November 2010 to April 2010. It includes developing chapters on the Milky Way, the solar system, galaxies, and stars over different dates. Each chapter will cover related definitions, classifications, structures, and life cycles. Tutorials, games and interactive elements will be incorporated. The package will be finalized with abstract, acknowledgements and references in March before preparation and presentation in April.
Chapter 19 – formation of the universe
The document summarizes theories about the formation and evolution of the universe:
1) The Big Bang theory proposes that approximately 13.8 billion years ago, all matter in the observable universe was condensed into an incredibly dense singularity that suddenly exploded, causing the universe to expand rapidly and form light elements.
2) As the universe expanded, gravity caused matter to condense into the first stars and galaxies. Observations of redshifts in light from distant galaxies provide evidence the universe continues expanding today.
3) Current theories suggest three possible ultimate fates for the universe depending on its overall density - continued expansion, eventual contraction, or a stable flat state.
Alfalfa discovery of_the_most_metal_poor_gas_rich_galaxy_known_agc_198691
We present spectroscopic observations of the nearby dwarf galaxy AGC 198691. This object is part
of the Survey of H I in Extremely Low-Mass Dwarfs (SHIELD) project, which is a multi-wavelength
study of galaxies with H I masses in the range of 106-107:2 M discovered by the ALFALFA survey.
We have obtained spectra of the lone H II region in AGC 198691 with the new high-throughput
KPNO Ohio State Multi-Object Spectrograph (KOSMOS) on the Mayall 4-m as well as with the Blue
Channel spectrograph on the MMT 6.5-m telescope. These observations enable the measurement of the
temperature-sensitive [O III]4363 line and hence the determination of a \direct" oxygen abundance
for AGC 198691. We nd this system to be an extremely metal-de cient (XMD) system with an
oxygen abundance of 12+log(O/H) = 7.02 0.03, making AGC 198691 the lowest-abundance starforming
galaxy known in the local universe. Two of the ve lowest-abundance galaxies known have
been discovered by the ALFALFA blind H I survey; this high yield of XMD galaxies represents a
paradigm shift in the search for extremely metal-poor galaxies.
Science project
The document discusses Pluto's reclassification from a planet to a dwarf planet by the International Astronomical Union (IAU) in 2006. It provides background on Pluto's discovery in 1930 and its initial classification as the ninth planet. It then explains that the IAU formed a committee to define what qualifies as a planet after struggling to do so. The committee established three criteria for planet status, and based on these criteria, Pluto did not clear its orbital path of other objects and was reclassified as a dwarf planet. The document supports the original hypothesis that classifications in science are continually evolving with new discoveries and information.
Stellar evolution
1. Stellar evolution begins with the fragmentation of massive molecular clouds into smaller masses, each initiating their own star formation process.
2. As clouds collapse under gravity, the gravitational energy is transformed to radiation through molecular hydrogen and dust grains, causing an isothermal collapse. Further collapse becomes adiabatic as stars become opaque.
3. Stars sustain themselves through nuclear fusion, with more massive stars having shorter lifespans than less massive stars due to the greater energy requirements.
4. Stellar remnants include white dwarfs, neutron stars, pulsars, and black holes, depending on the star's original mass.
4.2 Stars have Life Cycles
Stars change over their life cycles depending on their mass. Low-mass stars like our Sun remain on the main sequence for billions of years, slowly fusing hydrogen into helium. Eventually they expand into red giants and later cool into white dwarfs. High-mass stars burn through their fuel quickly and explode as supernovae after millions of years, leaving behind neutron stars or black holes. All stars form from contracting nebulae of gas and dust.
The Ever Surprising Universe
This document summarizes the history of discoveries about the expanding universe and the unexpected findings that have challenged our understanding, including the accelerating expansion driven by dark energy. It discusses early models proposed by Einstein and others, the evidence from the cosmic microwave background and supernovae observations in the late 20th century that revealed the universe is expanding and accelerating, and outstanding questions about dark energy and dark matter that remain areas of active research today.
How does a Global Navigation Satellite know where it is to tell you where you...
*** Presented by Martin Wass at State of the Map 2013
*** For the video of this presentation please see http://lanyrd.com/2013/sotm/scpktb/
*** Full schedule available at http://wiki.openstreetmap.org/wiki/State_Of_The_Map_2013
The satellites in Global Navigation Satellite Systems get their position data regularly updated from ground stations. But how do ground stations 'know' where they are, and relative to what? The Airy transit circle at Greenwich once defined the Prime Meridian and the spinning Earth the Equator. We now know the tectonic plate Greenwich sits on is moving and the Earth wobbles... Any defined datum causes difficulties when moving away from the vicinity, say to Mars. Using several different datums raises other problems. When everything is sliding around, how do we define and use a co-ordinate system that works?
Extended Essay
This document is a 33-page extended essay by Ethan Dodd evaluating the effect of automobiles and advanced high strength steel on the geomagnetic field. The essay includes two experiments conducted in Prague, Czech Republic measuring changes in the magnetic field from vehicles and a steel cube. The experiments found that larger masses of the objects weakened the magnetic field more in the surrounding area, with the largest vehicle tested able to weaken the field by approximately 2000nT.
Astronomy Photographer of the Year 2015 (shortlisted images selected)
This document provides information about the Astronomy Photographer of the Year 2015 competition, including shortlisted images, category winners, and past winners. Some of the shortlisted images show nebulae, galaxies, auroras, comets, and the moon. Information is provided about the photographers and locations where the photos were taken. Past competition winners demonstrated impressive shots of the Milky Way, solar eclipses, and planetary conjunctions.
What's hot (20)
Astronomy Photographer of the Year 2016: Winners & Finalists
Astronomy Photographer of the Year 2016: Winners & Finalists
Morphologies of Wolf-Rayet Planetary Nebulae based on IFU Observations
Morphologies of Wolf-Rayet Planetary Nebulae based on IFU Observations
Alfalfa discovery of_the_most_metal_poor_gas_rich_galaxy_known_agc_198691
Alfalfa discovery of_the_most_metal_poor_gas_rich_galaxy_known_agc_198691
How does a Global Navigation Satellite know where it is to tell you where you...
How does a Global Navigation Satellite know where it is to tell you where you...
Astronomy Photographer of the Year 2015 (shortlisted images selected)
Astronomy Photographer of the Year 2015 (shortlisted images selected)
Similar to A cosmic explosion: SN 2017cbv
What are dead stars good for?
A lesson I gave to high school students during my time at Yale, with the Yale SPLASH student organisation.
Week 1 Lesson 1.pptx
The document provides information about the life cycle and evolution of stars from their formation in nebulae to their death. It discusses the various stages stars pass through such as the protostar stage where nuclear fusion begins, the main sequence stage where stars spend most of their lives fusing hydrogen, and later stages where they expand into red giants or explode as supernovae, leaving behind remnants like neutron stars or black holes. The stages discussed include nebula, protostar, main sequence star, red giant, white dwarf, supernova, neutron star, and black hole. Examples and diagrams are provided to illustrate each stage of a star's life.
Propagation usgs
This document summarizes key concepts in theoretical seismology. It discusses how seismic wave propagation is affected by the layered structure of the Earth, including refraction through boundaries between layers. This can produce complicated ray paths. It also describes different types of seismic waves like P and S waves, and explains how near-field static displacements and far-field propagating waves arise from solutions to the 3D wave equation. Additionally, it outlines normal modes of vibration within the Earth analogous to ringing of a bell, which provide insights into the Earth's deep interior structure.
Jupiter
- Jupiter is the largest planet in our solar system, with a mass over 300 times that of Earth. It has 64 known moons, including the four largest called the Galilean moons - Io, Europa, Ganymede, and Callisto.
- Jupiter has intense radiation belts and a powerful magnetic field over 20,000 times stronger than Earth's. Its magnetic field traps energetic particles and creates spectacular auroras and synchrotron radiation.
- The Great Red Spot is a massive persistent storm on Jupiter twice the size of Earth that has lasted over 300 years. Jupiter's moon Io's volcanic activity feeds sulfur dioxide into Jupiter's magnetosphere, creating intense radiation belts around the planet.
The Life Cycle of a Star
Stars are formed from clouds of gas and dust called nebulae. As stars age and evolve, they progress through different stages - from stars to red giants or dwarfs to supernovae. The most massive stars may collapse into neutron stars or black holes. Black holes are objects so dense that not even light can escape their powerful gravitational pull. Material near a black hole forms a swirling accretion disk and is ejected at nearly light speed in powerful jets. Advancing technology is improving our understanding of stellar evolution and black hole formation.
Lesson 6 stars
Stars are massive spheres of hot gas held together by gravity, mainly composed of hydrogen. Stars generate their own energy through nuclear fusion and have lifecycles where they evolve, burning hydrogen and building heavier elements. The nearest star to our solar system is Alpha Centauri. Stars can be classified based on their temperature, which determines their color, from hottest and bluest to coolest and reddest. Distance to stars can be estimated using stellar parallax. Nebulae are clouds of gas and dust where new stars are forming.
Marois triumf-20101120pub
Direct imaging of exoplanets is challenging due to the small angular separation and brightness difference between planets and their host stars. The document discusses the history and recent progress of direct exoplanet imaging, including the discovery of multiple planets orbiting the star HR 8799 using adaptive optics on large telescopes. Upcoming instruments like GPI and TMT aim to directly image Earth-like exoplanets.
Cosmic Fireworks: Supernova Explosions
The document discusses supernovae and their importance. It explains that supernovae are either caused by the core collapse of massive stars or the thermonuclear detonation of white dwarfs. Supernovae are crucial because they produce heavy elements, disperse materials to form new stars, and could provide clues about the early universe. The next supernova in our galaxy would be a major multi-messenger event observed across the electromagnetic spectrum and other messengers like neutrinos and gravitational waves. However, the nearest candidate star is over 150 light years away so the earth is safe from being destroyed by a nearby supernova explosion.
NUCLEOSYNTHESIS.pptx
This document discusses stellar nucleosynthesis and the formation of elements in stars. It explains that light elements like hydrogen and helium were formed in the early universe during the Big Bang, while heavier elements are produced through nuclear fusion processes within stars as they age and evolve. Elements are synthesized through proton-proton chains, the CNO cycle, helium fusion, and the alpha ladder process in main sequence stars and red giants. The heaviest elements are formed by neutron capture in supernovae. Stellar nucleosynthesis is responsible for producing all of the chemical elements beyond helium in the universe.
Menace From Outer Space
Menace from asteroids, comets, and other debris from outer space to life and civilization on mother earth.
Solar exploration
This document provides an overview of solar exploration. It summarizes that the sun is a normal star that is made up mostly of hydrogen and helium. It discusses the sun's structure, temperature, magnetic field, and 11-year solar cycle. The document also describes various solar phenomena observed at different wavelengths, such as sunspots, flares, prominences, and coronal mass ejections, as well as their potential effects on Earth. It briefly mentions some open questions in the field and lists some past and present space missions that observe the sun.
12 3-2014 atsoa.ppt
Hello guys, this ppt contains my project work on photometric analysis of Supernova 2008gj..with collaborators Ms. Komal Kabara and Manikandan K........Take a look.......looking forward for your suggestions...
Science planets ppt
The document provides information about the 8 planets in our solar system as well as 3 dwarf planets - Pluto, Ceres, and Eris. It discusses key facts about each planet such as their distance from the sun, rotation and revolution periods, composition of their atmospheres, and notable features. It also defines common terms like revolve, rotate, and orbit. Key differences between the inner and outer planets are that inner planets are smaller and closer to the sun while outer planets are large gaseous spheres with rings.
Ast1001.Ch9
Asteroids are rocky objects that orbit the Sun, mostly located in a belt between Mars and Jupiter. Their irregular shapes indicate they have not undergone geological processes like planets. Some large asteroids even have their own moons. Most meteorites originate from asteroids. Comets are icy objects that originate much further from the Sun in the Kuiper belt and Oort cloud. When heated as they approach the Sun, comets grow dust and plasma tails. Pluto and other large Kuiper belt objects are classified as dwarf planets rather than planets due to their small size and icy composition. Evidence suggests a large asteroid or comet impact was responsible for the mass extinction that killed the dinosaurs 65 million years ago.
Life of stars by Marta and Beatriz 4beso
1) Stars are born in stellar nurseries like the Eagle Nebula where newborn stars emit ultraviolet light.
2) Stars evolve and die in different ways depending on their mass - smaller stars like our Sun become white dwarfs, while larger stars may explode as supernovae leaving behind neutron stars or black holes.
3) Nuclear fusion in stars converts hydrogen into helium and heavier elements like oxygen, carbon, and iron depending on the star's mass. This document describes the life cycles of stars and their classification.
1.Question DetailsMy NotesQuestion PartSubmissions Used(.docx
1.Question DetailsMy Notes
Question Part
Submissions Used
(Image Credit: NASA)
Select all that apply. Consider a generic Jovian planet with a cloud-top "surface" temperature of 85 K and an escape speed of 35 km/s. Assuming that the planet was not any hotter in the past, calculate if its atmosphere contains significant amounts of:
A. Hydrogen gas (H2)
B. Helium gas (He)
2.Question DetailsMy Notes
Question Part
Submissions Used
(Image Credit: NASA)
Select all that apply. Which of the following statements about the Galilean moons is true?
A. Because Io is closest to Jupiter, its tidal heating is the greatest, resulting in a mantle of molten rock and consequently in volcanic eruptions and lava flows that are hot enough to have evaporated the surface water, which was lost to space.
B. Because Europa is farther from Jupiter than Io, its tidal heating is less, resulting in a mantle of solid rock covered by an ocean of water.C. Because Ganymede is farther from Jupiter than Europa, its tidal heating is less, resulting in a mantle of solid rock covered by an ocean that probably consists of a slushy mix of water and ice.
D. Because Callisto is farther from Jupiter than Ganymede, its tidal heating is less, resulting in an interior that was never warm enough to differentiate: It remains an icy/rocky mix.
3.Question DetailsMy Notes
(Image Credit: NASA)
Divisions and gaps within Saturn's rings are caused by:
A. Orbital resonances with Saturn's moons
B. Small moons within the rings C. Shepherd moons
D. A & B
E. A & C
F. B & C
4.Question DetailsMy Notes
Question Part
Submissions Used
Select all that apply. In the following table, you will find the maximum surface temperature for each of the solar system's seven large moons. Generally speaking, the farther a moon is from the sun, the cooler it is:
Using these temperatures, calculate if ammonia (NH3) were to leak out of the interior onto the surface of each of these moons, which would be able to retain it as an atmosphere. (The molecular mass of ammonia is 17.)
A. Earth's moon
B. IoC. Europa
D. Ganymede
E. Callisto
F. Titan
G. Triton
5.Question DetailsMy Notes
Earth, Jupiter, Saturn, Uranus, and Neptune all have strong magnetic fields. To generate a magnetic field, a planet must have a layer that is both fluid, meaning it can move in complex ways, and conductive, meaning that electrons can flow through it easily. To generate a strong magnetic field, this layer, and hence the planet as a whole, must also rotate rapidly (which all of these planets do).
Which of the following materials is not responsible for generating any of these planets' magnetic fields?
A. Liquid iron
B. Metallic hydrogen C. Molecular hydrogen
D. Water-ammonia slush
6.Question DetailsMy Notes
Which of the following planets does not have a significant internal source of heat?
A. Jupiter
B. Saturn C. Uranus
D. Neptune
7.Question DetailsMy Notes
Question Part
Submissions Used
(Image Credit: Gemini Observatory/Lyn.
Astrophysics and Solar Physics
The Sun is a dynamic star whose activity and variability directly influence conditions on Earth. The Sun's atmosphere, including the photosphere, chromosphere, and corona, undergo continuous changes driven by the Sun's magnetic field and interior dynamics. Small-scale magnetic features and energetic events throughout the solar atmosphere, such as spicules in the chromosphere and nanoflares in the corona, are thought to play an important role in heating the Sun's million-degree outer atmosphere through dissipation of magnetic energy. Observatories such as SOHO, STEREO, and Hinode provide continuous monitoring of the Sun to improve understanding of its complex variability and influence.
John Elwell USU Sunrise Session
The WISE (Wide-field Infrared Survey Explorer) mission mapped the sky in infrared light over a 10-year period. It was able to see features of the universe invisible in visible light. WISE discovered over 100,000 asteroids and hundreds of near-Earth objects. It also found new galaxies, star clusters, and brown dwarfs. The all-sky infrared survey provided an unprecedented view of the universe and yielded a wealth of new data.
kitp_ucsb_armagan_2010.ppt
This document provides an overview of detecting planets beyond our solar system. It begins with distinguishing key differences between stars and planets, noting that planets do not shine on their own. It then discusses what makes a planet habitable, focusing on factors like liquid water, breathable air, and an atmosphere that protects from radiation. The document outlines several tools used to detect exoplanets, including spectrographic imaging to analyze atmospheric compositions, the radial velocity method that detects wobbles in star movements caused by planetary gravitational pulls, and the photometry method that monitors star brightness changes when planets pass between stars and observers. It concludes by noting the ongoing efforts to discover potentially habitable Earth-like planets outside our solar system.
Astronomy - State of the Art - Stars
Astronomy- State of the art is a course covering the hottest topics in astronomy. In this section, the exotic end states of stars are discussed, including pulsars, neutron stars, and black holes.
Similar to A cosmic explosion: SN 2017cbv (20)
1.Question DetailsMy NotesQuestion PartSubmissions Used(.docx
1.Question DetailsMy NotesQuestion PartSubmissions Used(.docx
Recently uploaded
RPMS TEMPLATE FOR SCHOOL YEAR 2023-2024 FOR TEACHER 1 TO TEACHER 3
RPMS Template 2023-2024 by: Irene S. Rueco
Azure Interview Questions and Answers PDF By ScholarHat
Azure Interview Questions and Answers PDF By ScholarHat
Your Skill Boost Masterclass: Strategies for Effective Upskilling
Your Skill Boost Masterclass: Strategies for Effective UpskillingExcellence Foundation for South Sudan
Strategies for Effective Upskilling is a presentation by Chinwendu Peace in a Your Skill Boost Masterclass organisation by the Excellence Foundation for South Sudan on 08th and 09th June 2024 from 1 PM to 3 PM on each day.How to Make a Field Mandatory in Odoo 17
In Odoo, making a field required can be done through both Python code and XML views. When you set the required attribute to True in Python code, it makes the field required across all views where it's used. Conversely, when you set the required attribute in XML views, it makes the field required only in the context of that particular view.
PCOS corelations and management through Ayurveda.
This presentation includes basic of PCOS their pathology and treatment and also Ayurveda correlation of PCOS and Ayurvedic line of treatment mentioned in classics.
How to Fix the Import Error in the Odoo 17
An import error occurs when a program fails to import a module or library, disrupting its execution. In languages like Python, this issue arises when the specified module cannot be found or accessed, hindering the program's functionality. Resolving import errors is crucial for maintaining smooth software operation and uninterrupted development processes.
The Diamonds of 2023-2024 in the IGRA collection
A review of the growth of the Israel Genealogy Research Association Database Collection for the last 12 months. Our collection is now passed the 3 million mark and still growing. See which archives have contributed the most. See the different types of records we have, and which years have had records added. You can also see what we have for the future.
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...Dr. Vinod Kumar Kanvaria
Exploiting Artificial Intelligence for Empowering Researchers and Faculty,
International FDP on Fundamentals of Research in Social Sciences
at Integral University, Lucknow, 06.06.2024
By Dr. Vinod Kumar KanvariaHow to Setup Warehouse & Location in Odoo 17 Inventory
In this slide, we'll explore how to set up warehouses and locations in Odoo 17 Inventory. This will help us manage our stock effectively, track inventory levels, and streamline warehouse operations.
Walmart Business+ and Spark Good for Nonprofits.pdf
"Learn about all the ways Walmart supports nonprofit organizations.
You will hear from Liz Willett, the Head of Nonprofits, and hear about what Walmart is doing to help nonprofits, including Walmart Business and Spark Good. Walmart Business+ is a new offer for nonprofits that offers discounts and also streamlines nonprofits order and expense tracking, saving time and money.
The webinar may also give some examples on how nonprofits can best leverage Walmart Business+.
The event will cover the following::
Walmart Business + (https://business.walmart.com/plus) is a new shopping experience for nonprofits, schools, and local business customers that connects an exclusive online shopping experience to stores. Benefits include free delivery and shipping, a 'Spend Analytics” feature, special discounts, deals and tax-exempt shopping.
Special TechSoup offer for a free 180 days membership, and up to $150 in discounts on eligible orders.
Spark Good (walmart.com/sparkgood) is a charitable platform that enables nonprofits to receive donations directly from customers and associates.
Answers about how you can do more with Walmart!"
ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...
Denis is a dynamic and results-driven Chief Information Officer (CIO) with a distinguished career spanning information systems analysis and technical project management. With a proven track record of spearheading the design and delivery of cutting-edge Information Management solutions, he has consistently elevated business operations, streamlined reporting functions, and maximized process efficiency.
Certified as an ISO/IEC 27001: Information Security Management Systems (ISMS) Lead Implementer, Data Protection Officer, and Cyber Risks Analyst, Denis brings a heightened focus on data security, privacy, and cyber resilience to every endeavor.
His expertise extends across a diverse spectrum of reporting, database, and web development applications, underpinned by an exceptional grasp of data storage and virtualization technologies. His proficiency in application testing, database administration, and data cleansing ensures seamless execution of complex projects.
What sets Denis apart is his comprehensive understanding of Business and Systems Analysis technologies, honed through involvement in all phases of the Software Development Lifecycle (SDLC). From meticulous requirements gathering to precise analysis, innovative design, rigorous development, thorough testing, and successful implementation, he has consistently delivered exceptional results.
Throughout his career, he has taken on multifaceted roles, from leading technical project management teams to owning solutions that drive operational excellence. His conscientious and proactive approach is unwavering, whether he is working independently or collaboratively within a team. His ability to connect with colleagues on a personal level underscores his commitment to fostering a harmonious and productive workplace environment.
Date: May 29, 2024
Tags: Information Security, ISO/IEC 27001, ISO/IEC 42001, Artificial Intelligence, GDPR
-------------------------------------------------------------------------------
Find out more about ISO training and certification services
Training: ISO/IEC 27001 Information Security Management System - EN | PECB
ISO/IEC 42001 Artificial Intelligence Management System - EN | PECB
General Data Protection Regulation (GDPR) - Training Courses - EN | PECB
Webinars: https://pecb.com/webinars
Article: https://pecb.com/article
-------------------------------------------------------------------------------
For more information about PECB:
Website: https://pecb.com/
LinkedIn: https://www.linkedin.com/company/pecb/
Facebook: https://www.facebook.com/PECBInternational/
Slideshare: http://www.slideshare.net/PECBCERTIFICATION
clinical examination of hip joint (1).pdf
described clinical examination all orthopeadic conditions .
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2023-2024 (CÓ FI...
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2023-2024 (CÓ FI...Nguyen Thanh Tu Collection
https://app.box.com/s/y977uz6bpd3af4qsebv7r9b7s21935vdDigital Artifact 1 - 10VCD Environments Unit
Digital Artifact 1 - 10VCD Environments Unit - NGV Pavilion Concept Design
বাংলাদেশ অর্থনৈতিক সমীক্ষা (Economic Review) ২০২৪ UJS App.pdf
বাংলাদেশের অর্থনৈতিক সমীক্ষা ২০২৪ [Bangladesh Economic Review 2024 Bangla.pdf] কম্পিউটার , ট্যাব ও স্মার্ট ফোন ভার্সন সহ সম্পূর্ণ বাংলা ই-বুক বা pdf বই " সুচিপত্র ...বুকমার্ক মেনু 🔖 ও হাইপার লিংক মেনু 📝👆 যুক্ত ..
আমাদের সবার জন্য খুব খুব গুরুত্বপূর্ণ একটি বই ..বিসিএস, ব্যাংক, ইউনিভার্সিটি ভর্তি ও যে কোন প্রতিযোগিতা মূলক পরীক্ষার জন্য এর খুব ইম্পরট্যান্ট একটি বিষয় ...তাছাড়া বাংলাদেশের সাম্প্রতিক যে কোন ডাটা বা তথ্য এই বইতে পাবেন ...
তাই একজন নাগরিক হিসাবে এই তথ্য গুলো আপনার জানা প্রয়োজন ...।
বিসিএস ও ব্যাংক এর লিখিত পরীক্ষা ...+এছাড়া মাধ্যমিক ও উচ্চমাধ্যমিকের স্টুডেন্টদের জন্য অনেক কাজে আসবে ...
Recently uploaded (20)
Liberal Approach to the Study of Indian Politics.pdf
Liberal Approach to the Study of Indian Politics.pdf
RPMS TEMPLATE FOR SCHOOL YEAR 2023-2024 FOR TEACHER 1 TO TEACHER 3
RPMS TEMPLATE FOR SCHOOL YEAR 2023-2024 FOR TEACHER 1 TO TEACHER 3
Pride Month Slides 2024 David Douglas School District
Pride Month Slides 2024 David Douglas School District
Azure Interview Questions and Answers PDF By ScholarHat
Azure Interview Questions and Answers PDF By ScholarHat
Your Skill Boost Masterclass: Strategies for Effective Upskilling
Your Skill Boost Masterclass: Strategies for Effective Upskilling
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...
How to Setup Warehouse & Location in Odoo 17 Inventory
How to Setup Warehouse & Location in Odoo 17 Inventory
Walmart Business+ and Spark Good for Nonprofits.pdf
Walmart Business+ and Spark Good for Nonprofits.pdf
ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...
ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2023-2024 (CÓ FI...
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2023-2024 (CÓ FI...
বাংলাদেশ অর্থনৈতিক সমীক্ষা (Economic Review) ২০২৪ UJS App.pdf
বাংলাদেশ অর্থনৈতিক সমীক্ষা (Economic Review) ২০২৪ UJS App.pdf
A cosmic explosion: SN 2017cbv
- 1. A Cosmic Explosion Shedding light on the cosmic distance ladder By Wee Jerrick
- 6. What is a Type Ia Supernova?
- 8. The four stages of a star’s life Birth Main Sequence Giant Phase Death
- 10. A sun-like star Type Mass G 1.989 x 1030 kg or 1 M☉ Hydrogen -> Helium 4He 1H
- 11. Giant Phase Predominantly Helium Nuclear Fusion coming to a halt
- 12. Death: Planetary Nebula Gravitational Collapse halted by the formation of a white dwarf Material falling towards the core bounces back out to space (creating a “planetary Nebula”) White dwarf is left behind
- 13. Ring Nebula
- 15. video on Type Ia binary collision What is a Type Ia Supernova?
- 16. how the research was done
- 19. what we got
- 20. Optical Light Curves B+1 V R - 1 I + 2
- 21. Infrared Light Curves Y+3 J H - 1 K - 2
- 22. SNooPy Modelling and Fit
- 23. Cosmological Significance (what’s the big deal? why does it matter?)
- 24. tl;dr it helps us to constrain the rate of expansion of the universe
- 26. Distance Modulus: m - M = 5 log d - 5 + Aλ
- 27. Nearby Far away
- 28. Actual Perceived
- 29. Distance Modulus: m - M = 5 log d - 5 + Aλ
- 30. Distance Modulus: actual brightness perceived brightness m - M = 5 log d - 5 + Aλ
- 31. from Rachel Beaton’s talk of SN 2017cbv
- 33. New Projects! AT 2018cow (“The Cow”) ASASSN-18fv (Nova Carinae 2018)