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Paper: Looking for Transits of Jupiter-Size Planets Orbiting Stars in Habitable Zones
Volume: 430, Pathways Towards Habitable Planets
Page: 439
Authors: García-Melendo, E.; Ribas, I.
Abstract: 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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