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

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

Previous Project Analyzed Photometric Data taken by Pr. Shliegh Star 0 = GJ 437 Star 1 = HIP 57103 Star 2 = USNO-B1.0 1167-00204224 Star 3=GSC 01984-02056 Star 4=11:42:20.08 +26:49:43.20

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

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

Data From Control Night 1

Data From Control Night 2

Data From Transit Night

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

Conclusion Results Refute Previous Data

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