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36th International School for Young Astronomers
24 November – 12 December 2014 @ Chiang Mai, Thailand
Photometric Observat...
36th International School for Young Astronomers
24 November – 12 December 2014 @ Chiang Mai, Thailand
EXO-PLANET TRANSIT:
...
(Tutors)
Prof Qian Shenbang
Dr He Jiajia
(Students)
Eranga Thilina Jayashantha
Maulidiani Az Zahra
Grittiya Pongsupa
Nurul...
36th International School for Young Astronomers
24 November – 12 December 2014 @ Chiang Mai, Thailand
1.Introduction
2.Objective
3.Observation
4.Result and Analysis
5.Conclusions
36th International School for Young Astronome...
36th International School for Young Astronomers
24 November – 12 December 2014 @ Chiang Mai, Thailand
If planet passes in
...
36th International School for Young Astronomers
24 November – 12 December 2014 @ Chiang Mai, Thailand
From period of the p...
2 types of planetary orbits in binary star system
36th International School for Young Astronomers
24 November – 12 Decembe...
• Learning on how to do photometric
observation
• Learning data reduction using IRAF software
• Learning on how to do data...
• Telescope model: PlaneWave CDK24
• Aperture: 50 cm
• Focal length: 3962 mm
• Focal ratio: f/6.5
36th International Schoo...
• ANDOR DW936N-#BV CCD
• Active pixels 2048 x 2048
• Sensor size 2.76 x 2.76 cm
• Pixel size (W x H) 13.5 μm x 13.5 μm
• A...
No.
Name of
Target
Coordinate
Observing Time
(Local Time)
1
TX CnC
RA:08h40m01.7s
DEC:+18°59’59.5’’
01:43 – 02:50 a.m.
2 E...
• Observation date: 7 December 2014
• After midnight 7 December
• Before midnight 8 December
36th International School for...
IRAF
1. Image reduction
2. Differential Photometry
3. Aperture Photometry
ORIGIN 70
1. Light Curve Fitting
2. Time of Mini...
No.
Name of
Target
Coordinate
Observing Time
(Local Time)
Minimum Time
HJD2456900+
1
TX CnC
RA:08h40m01.7s
DEC:+18°59’59.5...
Exo-Planet Transit
Exo-Planet Transit
Exo-Planet Transit
Exo-Planet Transit
Exo-Planet Transit
Exo-Planet Transit
Exo-Planet Transit
Exo-Planet Transit
Exo-Planet Transit
Exo-Planet Transit
Exo-Planet Transit
Exo-Planet Transit
Exo-Planet Transit
Exo-Planet Transit
Exo-Planet Transit
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Exo-Planet Transit

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Exo-Planet Transit

  1. 1. 36th International School for Young Astronomers 24 November – 12 December 2014 @ Chiang Mai, Thailand Photometric Observation
  2. 2. 36th International School for Young Astronomers 24 November – 12 December 2014 @ Chiang Mai, Thailand EXO-PLANET TRANSIT: PHOTOMETRIC OBSERVATION Qian Shengbang, Yunnan Observatories He Jiajia , Yunnan Observatories & National Astronomical Research Institute of Thailand Maulidiani Az Zahra, Institut Teknologi Bandung Eranga Thiina Jayashantha University of Kelaniya Sri Lanka Grittiya Pongsupa Chiang Mai University Nurul Fatini Jaafar, University of Science Malaysia
  3. 3. (Tutors) Prof Qian Shenbang Dr He Jiajia (Students) Eranga Thilina Jayashantha Maulidiani Az Zahra Grittiya Pongsupa Nurul Fatini Jaafar 36th International School for Young Astronomers 24 November – 12 December 2014 @ Chiang Mai, Thailand
  4. 4. 36th International School for Young Astronomers 24 November – 12 December 2014 @ Chiang Mai, Thailand
  5. 5. 1.Introduction 2.Objective 3.Observation 4.Result and Analysis 5.Conclusions 36th International School for Young Astronomers 24 November – 12 December 2014 @ Chiang Mai, Thailand
  6. 6. 36th International School for Young Astronomers 24 November – 12 December 2014 @ Chiang Mai, Thailand If planet passes in front of parent star, the flux/luminosity of the star will temporarily drop drawing out a light curve
  7. 7. 36th International School for Young Astronomers 24 November – 12 December 2014 @ Chiang Mai, Thailand From period of the planet’s orbit and period of the transit occurred, diameter of the planet’s orbit can be measured. The amount of starlight blocked by the planet is proportional to the cross- sectional area of that planet. Transit depth is proportional to surface ratios of planet and star. Planet size relative to the star can be measured.
  8. 8. 2 types of planetary orbits in binary star system 36th International School for Young Astronomers 24 November – 12 December 2014 @ Chiang Mai, Thailand S P X X
  9. 9. • Learning on how to do photometric observation • Learning data reduction using IRAF software • Learning on how to do data analysis to get minimum time, error and O-C diagram 36th International School for Young Astronomers 24 November – 12 December 2014 @ Chiang Mai, Thailand
  10. 10. • Telescope model: PlaneWave CDK24 • Aperture: 50 cm • Focal length: 3962 mm • Focal ratio: f/6.5 36th International School for Young Astronomers 24 November – 12 December 2014 @ Chiang Mai, Thailand
  11. 11. • ANDOR DW936N-#BV CCD • Active pixels 2048 x 2048 • Sensor size 2.76 x 2.76 cm • Pixel size (W x H) 13.5 μm x 13.5 μm • Active area pixel well depth 100,000 e- • Readout rate used 1 MHz • Read noise 2.9 e- • Temperature that we used -80°C (cooling by air) • EQ 95% (BV) 36th International School for Young Astronomers 24 November – 12 December 2014 @ Chiang Mai, Thailand
  12. 12. No. Name of Target Coordinate Observing Time (Local Time) 1 TX CnC RA:08h40m01.7s DEC:+18°59’59.5’’ 01:43 – 02:50 a.m. 2 EH CNC RA:08h26m18.4s DEC:+20°52’50.0’’ 02:58 – 04:15 a.m. 3 FG Hya RA:08h27m03.9s DEC:+03°30’52.3’’ 04:38 – 06:00 a.m. 4 EQ Tau RA:03h48m13.4s DEC:+22°18’51.0’’ 09:40 – 10:40 p.m. 5 EE Cet RA:02h49m52.3s DEC:+08°56’18.0’’ 11:05p.m – 12:00 a.m.
  13. 13. • Observation date: 7 December 2014 • After midnight 7 December • Before midnight 8 December 36th International School for Young Astronomers 24 November – 12 December 2014 @ Chiang Mai, Thailand
  14. 14. IRAF 1. Image reduction 2. Differential Photometry 3. Aperture Photometry ORIGIN 70 1. Light Curve Fitting 2. Time of Minimum 3. O-C Diagram
  15. 15. No. Name of Target Coordinate Observing Time (Local Time) Minimum Time HJD2456900+ 1 TX CnC RA:08h40m01.7s DEC:+18°59’59.5’’ 01:43 – 02:50 a.m. b-band :99,29855 v-band: 99,29851 2 EH CNC RA:08h26m18.4s DEC:+20°52’50.0’’ 02:58 – 04:15 a.m. b-band :99,35639 v-band: 99,356393 3 FG Hya RA:08h27m03.9s DEC:+03°30’52.3’’ 04:38 – 06:00 a.m. - 4 EQ Tau RA:03h48m13.4s DEC:+22°18’51.0’’ 09:40 – 10:40 p.m. b-band :99,29855 v-band: 99,29851 5 EE Cet RA:02h49m52.3s DEC:+08°56’18.0’’ 11:05p.m – 12:00 a.m. b-band :99,29855 v-band: 99,29851

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