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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

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Extra-Solar Planetary Transits

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  1. 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 57103 Star 2 = USNO-B1.0 1167-00204224 Star 3=GSC 01984-02056 Star 4=11:42:20.08 +26:49:43.20

  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

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