2010/01/07 by Kevin Apps, K. I. Clubb, Kelsey I. Clubb +14 · 2 citations
Physics and Astronomy · #Astro and Planetary Science #Astronomy #Astronomy and Astrophysical Research #Astrophysics #Exoplanet #Giant planet #Jupiter (rocket family) #Observatory #Orbital eccentricity #Physics #Planet #Planetary system #Stellar, planetary, and galactic studies #astro-ph.EP
paper · pdf · doi:10.1086/651058
5 figures
arxiv created 2010/01/07 · openalex publication_date 2010/01/12 · arxiv updated 2015/05/14 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Doppler observations from Keck Observatory reveal the presence of a planet with M sin i of 2.1 M Jup orbiting the M3V star HIP 79431. 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.