TrES Exoplanets and False Positives: Finding the Needle in the Haystack

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dc.creatorO'Donovan, Francis T.
dc.creatorCharbonneau, David
dc.date2007-05-14
dc.date.accessioned2026-07-07T08:01:19Z
dc.date.available2026-07-07T08:01:19Z
dc.descriptionOur 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.
dc.descriptionv1. 6 pages, 5 figures. To appear in the ASP Conference Series: "Transiting Extrasolar Planets Workshop", MPIA Heidelberg Germany, 25-28 September 2006. Eds: Cristina Afonso, David Weldrake & Thomas Henning
dc.identifierhttps://arxiv.org/abs/0705.1795
dc.identifierhttp://arxiv.org/abs/0705.1795
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/128872
dc.subjectAstrophysics
dc.titleTrES Exoplanets and False Positives: Finding the Needle in the Haystack
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