Looking for Transits of Jupiter-Size Planets Orbiting Stars in Habitable Zones

Details Looking for Transits of Jupiter-Size Planets Orbiting Stars in Habitable Zones Looking for Transits of Jupiter-Size Planets Orbiting Stars in Habitable Zones

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aspc..430..439g&link_type=abstract

Pathways Towards Habitable Planets, proceedings of a workshop held 14 to 18 September 2009 in Barcelona, Spain. Edited by Vincen

Mathematics

Probability

Scientific paper

Owing to detection bias, most of the nearly 400 discovered planets thus far are Jupiter-mass bodies. According to the extreme Venus and Mars criteria for the limits of the habitable zone (HZ) around stars with detected exoplanets (Selsis et al. 2007), a few of these Jupiter-size worlds orbit completely inside their parent star’s HZ. These planets have orbital semi-major axes between 1 and 4 AU and orbital periods around one year or longer. The discovery of a transiting “warm” Jupiter will provide valuable information on its atmosphere, as well as offer the possibility of detecting Earth and super-Earth type satellites (potentially habitable) by using a variety of techniques such as ultra-high precision photometry or long-term transit timings. An evaluation of the transit probability will depend on a careful study of available and new photometric and spectroscopic data to characterize the host stars and to determine improved ephemeris of the planet-star conjunction time. Transit events, with a duration between seven and ten hours, and photometric depths in excess of 1%, might be easily detected from two or three independent ground-based telescopes as shown recently during the discovery of the optical transit of HD80606b.

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