A long-period Jupiter-mass planet orbiting the nearby M dwarf GJ 849

R. Paul Butler; John Asher Johnson; Geoffrey W. Marcy; Jason T. Wright; Steven S. Vogt; Debra A. Fischer

doi:10.1086/510500

A long-period Jupiter-mass planet orbiting the nearby M dwarf GJ 849

R. Paul Butler, John Asher Johnson, Geoffrey W. Marcy, Jason T. Wright, Steven S. Vogt, Debra A. Fischer

Research output: Contribution to journal › Article › peer-review

88 Scopus citations

Abstract

We report precise Doppler measurements of GJ 849 (M3.5 V) that reveal the presence of a planet with a minimum mass of 0.82M_Jup in a 5.16 yr orbit. At a = 2.35 AU, GJ 849b is the first Doppler-detected planet discovered around an M dwarf orbiting beyond 0.21 AU, and is only the second Jupiter-mass planet discovered around a star less massive than 0.5 M_⊙. This detection brings to four the number of M stars known to harbor planets. Based on the results of our survey of 1300 FGKM main-sequence stars we find that giant planets within 2.5 AU are ∼3 times more common around GK stars than around M stars. Due to GJ 849's proximity of 8.8 pc, the planet's angular separation is 0.27″, making this system a prime target for high-resolution imaging using adaptive optics and future space-borne missions such as the Space Interferometry Mission PlanetQuest. We also find evidence of a linear trend in the velocity time series, which may be indicative of an additional planetary companion.

Original language	English (US)
Pages (from-to)	1685-1689
Number of pages	5
Journal	Publications of the Astronomical Society of the Pacific
Volume	118
Issue number	850
DOIs	https://doi.org/10.1086/510500
State	Published - Dec 2006

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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10.1086/510500

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title = "A long-period Jupiter-mass planet orbiting the nearby M dwarf GJ 849",

abstract = "We report precise Doppler measurements of GJ 849 (M3.5 V) that reveal the presence of a planet with a minimum mass of 0.82MJup in a 5.16 yr orbit. At a = 2.35 AU, GJ 849b is the first Doppler-detected planet discovered around an M dwarf orbiting beyond 0.21 AU, and is only the second Jupiter-mass planet discovered around a star less massive than 0.5 M⊙. This detection brings to four the number of M stars known to harbor planets. Based on the results of our survey of 1300 FGKM main-sequence stars we find that giant planets within 2.5 AU are ∼3 times more common around GK stars than around M stars. Due to GJ 849's proximity of 8.8 pc, the planet's angular separation is 0.27″, making this system a prime target for high-resolution imaging using adaptive optics and future space-borne missions such as the Space Interferometry Mission PlanetQuest. We also find evidence of a linear trend in the velocity time series, which may be indicative of an additional planetary companion.",

author = "Butler, {R. Paul} and Johnson, {John Asher} and Marcy, {Geoffrey W.} and Wright, {Jason T.} and Vogt, {Steven S.} and Fischer, {Debra A.}",

year = "2006",

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doi = "10.1086/510500",

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AU - Johnson, John Asher

AU - Marcy, Geoffrey W.

AU - Wright, Jason T.

AU - Vogt, Steven S.

AU - Fischer, Debra A.

PY - 2006/12

Y1 - 2006/12

N2 - We report precise Doppler measurements of GJ 849 (M3.5 V) that reveal the presence of a planet with a minimum mass of 0.82MJup in a 5.16 yr orbit. At a = 2.35 AU, GJ 849b is the first Doppler-detected planet discovered around an M dwarf orbiting beyond 0.21 AU, and is only the second Jupiter-mass planet discovered around a star less massive than 0.5 M⊙. This detection brings to four the number of M stars known to harbor planets. Based on the results of our survey of 1300 FGKM main-sequence stars we find that giant planets within 2.5 AU are ∼3 times more common around GK stars than around M stars. Due to GJ 849's proximity of 8.8 pc, the planet's angular separation is 0.27″, making this system a prime target for high-resolution imaging using adaptive optics and future space-borne missions such as the Space Interferometry Mission PlanetQuest. We also find evidence of a linear trend in the velocity time series, which may be indicative of an additional planetary companion.

AB - We report precise Doppler measurements of GJ 849 (M3.5 V) that reveal the presence of a planet with a minimum mass of 0.82MJup in a 5.16 yr orbit. At a = 2.35 AU, GJ 849b is the first Doppler-detected planet discovered around an M dwarf orbiting beyond 0.21 AU, and is only the second Jupiter-mass planet discovered around a star less massive than 0.5 M⊙. This detection brings to four the number of M stars known to harbor planets. Based on the results of our survey of 1300 FGKM main-sequence stars we find that giant planets within 2.5 AU are ∼3 times more common around GK stars than around M stars. Due to GJ 849's proximity of 8.8 pc, the planet's angular separation is 0.27″, making this system a prime target for high-resolution imaging using adaptive optics and future space-borne missions such as the Space Interferometry Mission PlanetQuest. We also find evidence of a linear trend in the velocity time series, which may be indicative of an additional planetary companion.

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A long-period Jupiter-mass planet orbiting the nearby M dwarf GJ 849

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