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arXiv · 0809.0172

A Jupiter-like Planet Orbiting the Nearby M Dwarf GJ832

Jeremy Bailey·R. Paul Butler·C. G. Tinney·Hugh R. A. Jones·Simon O'Toole·Brad D. Carter·Geoffrey W. Marcy
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Abstract

Precision Doppler velocity measurements from the Anglo-Australian Tele- scope reveal a planet with a 9.4+/-0.4 year period orbiting the M1.5 dwarf GJ 832. Within measurement uncertainty the orbit is circular, and the minimum mass (m sin i) of the planet is 0.64+/-0.06 MJUP. GJ 832 appears to be depleted in met- als by at least 50% relative to the Sun, as are a significant fraction of the M dwarfs known to host exoplanets. GJ 832 adds another Jupiter-mass planet to the known census of M dwarf exoplanets, which currently includes a significant number of Neptune-mass planets. GJ 832 is an excellent candidate for astromet- ric orbit determination with alpha sin i = 0.95 mas. GJ 832b has the second largest angular distance from its star among radial velocity detected exoplanets (0.69 arc sec) making it a potentially interesting target for future direct detection.

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Jeremy Bailey, R. Paul Butler, C. G. Tinney, Hugh R. A. Jones, Simon O'Toole, Brad D. Carter, Geoffrey W. Marcy. 2008-09-01. A Jupiter-like Planet Orbiting the Nearby M Dwarf GJ832. https://doi.org/10.1088/0004-637x%2F690%2F1%2F743

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