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 journalArticle

64 Citations (Scopus)

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.

Original languageEnglish (US)
Pages (from-to)1685-1689
Number of pages5
JournalPublications of the Astronomical Society of the Pacific
Volume118
Issue number850
DOIs
StatePublished - Dec 1 2006

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Jupiter (planet)
Jupiter
planets
planet
M stars
stars
harbors
main sequence stars
interferometry
adaptive optics
proximity
harbor
time series
orbits
trends
high resolution

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Butler, R. Paul ; Johnson, John Asher ; Marcy, Geoffrey W. ; Wright, Jason T. ; Vogt, Steven S. ; Fischer, Debra A. / A long-period Jupiter-mass planet orbiting the nearby M dwarf GJ 849. In: Publications of the Astronomical Society of the Pacific. 2006 ; Vol. 118, No. 850. pp. 1685-1689.
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A long-period Jupiter-mass planet orbiting the nearby M dwarf GJ 849. / Butler, R. Paul; Johnson, John Asher; Marcy, Geoffrey W.; Wright, Jason T.; Vogt, Steven S.; Fischer, Debra A.

In: Publications of the Astronomical Society of the Pacific, Vol. 118, No. 850, 01.12.2006, p. 1685-1689.

Research output: Contribution to journalArticle

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