O'Donovan, F. T. and Charbonneau, D. (2007) TrES Exoplanets and False Positives: Finding the Needle in the Haystack. In: Transiting Extrasolar Planets Workshop. ASP Conference Series (366). Astronomical Society of the Pacific , San Francisco, pp. 58-63. ISBN 978-1-583812-34-1 http://resolver.caltech.edu/CaltechAUTHORS:20101105-090929145
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Our incomplete understanding of the formation of gas giants and of their mass–radius relationship has motivated ground–based, wide–field surveys for new transiting extrasolar giant planets. Yet, astrophysical false positives have dominated the yield from these campaigns. Astronomical systems where the light from a faint eclipsing binary and a bright star is blended, producing a transit–like light curve, are particularly difficult to eliminate. As part of the Trans–atlantic Exoplanet Survey, we have encountered numerous false positives and have developed a procedure to reject them. We present examples of these false positives, including the blended system GSC 03885–00829 which we showed to be a K dwarf binary system superimposed on a late F dwarf star. This transit candidate in particular demonstrates the careful analysis required to identify astrophysical false positives in a transit survey. From amongst these impostors, we have found two transiting planets. We discuss our follow-up observations of TrES–2, the first transiting planet in the Kepler field.
|Item Type:||Book Section|
|Additional Information:||© 2007 Astronomical Society of the Pacific. We thank Lynne Hillenbrand for her continued support of this thesis work. This material is based on work supported by the National Aeronautics and Space Administration under grant NNG05GJ29G, issued through the Origins of Solar Systems Program.|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Ruth Sustaita|
|Deposited On:||05 Nov 2010 16:28|
|Last Modified:||26 Dec 2012 12:36|
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