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Published June 10, 2007 | Published
Journal Article Open

Outcome of Six Candidate Transiting Planets from a TrES Field in Andromeda


Driven by the incomplete understanding of the formation of gas giant extrasolar planets and of their mass-radius relationship, several ground-based, wide-field photometric campaigns are searching the skies for new transiting extrasolar gas giants. As part of the Trans-atlantic Exoplanet Survey (TrES), in 2003/2004 we monitored approximately 30,000 stars (9.5 ≤ V ≤ 15.5) in a 5.7° × 5.7° field in Andromeda with three telescopes over 5 months. We identified six candidate transiting planets from the stellar light curves. From subsequent follow-up observations we rejected each of these as an astrophysical false positive, i.e., a stellar system containing an eclipsing binary, whose light curve mimics that of a Jupiter-sized planet transiting a Sunlike star. We discuss here the procedures followed by the TrES team to reject false positives from our list of candidate transiting hot Jupiters. We present these candidates as early examples of the various types of astrophysical false positives found in the TrES campaign, and discuss what we learned from the analysis.

Additional Information

© 2007 The American Astronomical Society. Received 2006 July 22; accepted 2007 February 7. F. T. O'D, and D. C. thank Lynne Hillenbrand for her supervision of this thesis work. This material is based on work supported by the National Aeronautics and Space Administration under grants NNG05GJ29G, NNG05GI57G, NNH05AB88I, and NNG04LG89G, issued through the Origins of Solar Systems Program. We acknowledge support for this work from the Kepler mission via NASA Cooperative Agreement NCC2–1390. This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France, and NASA's Astrophysics Data System Bibliographic Services. This publication also utilizes data products from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation.

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