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26 April 2024

» arxiv » 1001.1174

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M2K: I. A Jovian mass planet around the M3V star HIP79431
Kevin Apps ; Kelsey I. Clubb ; Debra A. Fischer ; Eric Gaidos ; Andrew W. Howard ; John A. Johnson ; Geoffrey W. Marcy ; Howard Isaacson ; Matthew J. Giguere ; Jeff A. Valenti ; Victor Rodriguez ; Carley Chubak ; Sebastian Lepine ;
Date:	7 Jan 2010
Abstract:	Doppler observations from Keck Observatory reveal the presence of a planet with Msini of 2.1 Mjup orbiting the M3V star HIP79431. This is the sixth giant planet to be detected in Doppler surveys of M dwarfs and it is one of the most massive planets discovered around an M dwarf star. The planet has an orbital period of 111.7 days and an orbital eccentricity of 0.29. The host star is metal rich, with an estimated [Fe/H] = +0.4. This is the first planet to emerge from our new survey of 1600 M-to-K dwarf stars.
Source:	arXiv, 1001.1174
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