Paper: astro-ph/0510846
Date: Mon, 31 Oct 2005 13:26:11 GMT (41kb)

Title: Photometric searches for transiting planets: results and challenges

Authors: Frederic Pont

Comments: 12 pages. To appear in the proceedings of the meeting "Tenth
anniversary of 51Peg b - status and prospects of hot Jupiter studies" at OHP,
France, 22-26 August 2005
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Ground-based photometric surveys have led to the discovery of six transiting
exoplanets, five of which were detected by the OGLE survey. The FLAMES
multi-object spectrograph on the VLT has permitted a very efficient follow-up
of the OGLE transit candidates, characterising not only the 5 planets but also
more than 50 systems producing similar photometric signatures -- mainly
eclipsing binaires. The presence of these ubiquitous "impostors" is a challenge
for transit surveys. Another difficulty is the presence of red noise in the
photometry, which implies a much lower sensitivity to transiting planets than
usually assumed. We outline a method to estimate how the red noise will affect
the expected yield of photometric transit searches.

\\ ( http://arXiv.org/abs/astro-ph/0510846 , 41kb)