1. Extra-Solar Planetary Transits
J.J. Zanazzi
Ed Anderson
Northern Arizona University
Arizona Space Grant Consortium
Extra-Solar Planetary Transits

2. Background
The first extra-solar planet that was discovered around a “sun-like star” was 51 Pegasi b
Was discovered by Michel Mayor and Didier Queloz using the radical velocity method
Many different methods for discovering extra-solar planets
Radical Velocity Method(Redshift)
Astrometry
Extra-Solar Planetary Transits
Used Extra-Solar Planetary Transits

3. Previous Project Analyzed Photometric Data taken by Pr. Shliegh
Star 0 = GJ 437
Star 1 = HIP
Star 2 = USNO-B
Star 3=GSC
Star 4=11:42: :49:43.20

4. Current Project Verify or refute previous data
Went to the NURO Observatory to take photometric data of transiting planet and the suspicious comparison stars with Ed Anderson
Used Observatory’s 31 in. telescope
Took two control data sets, when planet was known to be not transiting, and one data set in which planet was transiting
Did differential photometry on stars’ magnitudes

5. Methods Used to Analyze Data
Used Image Reduction and Analysis Facility (IRAF) to analyze photometric data

6. Data From Control Night 1

7. Data From Control Night 2

8. Data From Transit Night

9. New Information
Dip in Magnitude Detected in the previous data is 200% greater than what other data has shown
“Transit” detected is a day long, when other data shows the transit to be one hour long

10. Conclusion
Results Refute Previous Data

11. Acknowledgments Ed Anderson Sharon Shliegh Kathleen Stigmon
NASA Arizona Space Grant Consortium
Physics and Astronomy Department at Northern Arizona University