Star Formation Rates in High Redshift Galaxy Clusters By CM
High Redshift Galaxy Clusters
Clusters are areas that are highly dense within galaxies
Earliest star-forming galaxies
Formed around the time of the Big Bang
High Redshift Galaxies are very far away
How do we study these clusters?
Spitzer Space Telescope
Launched on August 25, 2003
Takes images of objects and far-off galaxies
Uses infrared light
Image taken by the Spitzer Space Telescope
Uses mirrors to focus on objects
Advanced camera for surveys
Near-Infrared Camera and Multi-Object Spectrometer
Space Telescope Imaging Spectrometer
Image taken by the Hubble Telescope
Star Formation Rates
Rate at which stars form in galaxies
Many different types of star formation
Stars cannot form everywhere. There are certain requirements and standards that must be met in the surrounding environment for stars to form.
Because there are so many different ways that stars can form, there are a lot of equations that scientists use to determine specific star formation rates.
How to Find Star Formation Rates
Add up the light from the newly-formed stars
Add up light from the most massive stars and relate them to the total amount of stars being formed
Why should we study High Redshift Galaxies and SFR?
Look into the past
“ For the first time, we at last have real data to address the final frontier—but we need more observations. We must push even deeper into the universe, unveiling what happened during the initial 5 percent remaining distance back to the big bang.”
– Richard Ellis, California Institute of Technology
After studying what has already happened in the universe, scientists will be better suited to predict what will be happening in our galaxy in the future.
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Keel, Bill. "Star Formation in Galaxies." Sept. 2000. 26 Aug. 2007 <http://www.astr.ua.edu/keel/galaxies/sfr.html>.
"Spitzer Space Telescope Research Program for Teachers and Students: Star Formation in High Redshift Clusters with Spitzer." Spitzer Space Telescope . 26 Aug. 2007 <http://coolcosmos.ipac.caltech.edu/cosmic_classroom/teacher_research/7-StarForm/index.shtml>.
"Star-Formation Criteria and Star-Formation Rates." 26 Aug. 2007 <http://www-hpcc.astro.washington.edu/old_content/papers/neal/CSTreeSPH/node15.html>.