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American Astronomical Society, Astrophysical Journal, 1(690), p. 743-747, 2008

DOI: 10.1088/0004-637x/690/1/743

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A Jupiter-like planet orbiting the nearby M dwarf GJ 832

Journal article published in 2008 by Jeremy Bailey, R. Paul Butler, R. Paul Butler, Chris G. Tinney ORCID, Hugh Ra A. Jones ORCID, Simon O'Toole ORCID, Brad D. Carter ORCID, and Geoffrey W. Marcy
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

Precision Doppler velocity measurements from the Anglo-Australian Telescope 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 (msin i) of the planet is 0.64 ± 0.06 M JUP. GJ 832 appears to be depleted in metals 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 astrometric orbit determination with αsin i = 0.95 mas. GJ 832b has the second largest angular distance from its star among radial velocity detected exoplanets (0.69 arcsec) making it a potentially interesting target for future direct detection.