N2K: a targeted search for hot Jupiters

Physics

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Scientific paper

The N2K consortium is carrying out a distributed observing campaign to detect short-period planets using the Keck, Magellan and Subaru telescopes, as well as the automatic photometric telescopes at Fairborn Observatory. We have established a reservoir of more than 14,000 main sequence and subgiant stars, closer than 110 pc, brighter than V=10.5 and with 0.4 < B-V < 1.2. Because the fraction of stars with planets is a sensitive function of stellar metallicity, we are selecting a subset of about 2000 high metallicity stars for this program. Four short-period planets have been detected in the past year: HD 88133b, HD 149143b, HD 109749b and HD 149026. Among these new exoplanets, HD 149026b is a transiting planet with a 70 Earth-mass mass heavy element core.

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