A Planetary Companion to a Nearby M4 Dwarf, Gliese 876*

@article{Marcy1998APC,
  title={A Planetary Companion to a Nearby M4 Dwarf, Gliese 876*},
  author={Geoffrey W. Marcy and R. Paul Butler and Steven S. Vogt and D. A. Fischer and Jack J. Lissauer},
  journal={The Astrophysical Journal},
  year={1998},
  volume={505}
}
Doppler measurements of the M4 dwarf star Gliese 876 taken at both Lick and Keck Observatories reveal periodic, Keplerian velocity variations with a period of 61 days. The orbital fit implies that the companion has a mass of M=2.1 MJUP${r JUP}$ -->$t SUBgt {r JUP}t/SUBgt $ -->/sin${r sin}$ -->${r sin}$ -->i, an orbital eccentricity of e=0.27 ± 0.03, and a semimajor axis of a=0.21 AU. The planet is the first found around an M dwarf and was drawn from a survey of 24 such stars at Lick Observatory… Expand

Tables from this paper

A New Planet around an M Dwarf: Revealing a Correlation between Exoplanets and Stellar Mass
We report precise Doppler measurements of GJ 317 (M3.5 V) that reveal the presence of a planet with a minimum mass M_P sin i = 1.2 M_(Jup) in an eccentric, 692.9 day orbit. GJ 317 is only the third MExpand
A Pair of Resonant Planets Orbiting GJ 876
Precise Doppler measurements during 6 yr from the Lick and Keck observatories reveal two planets orbiting GJ 876 (M4V). The orbital Ðt yields companion masses of M sin i \ 0.56 and 1.89 orbital M J ,Expand
A ~7.5 M⊕ Planet Orbiting the Nearby Star, GJ 876*
High-precision, high-cadence radial velocity monitoring over the past 8 yr at the W. M. Keck Observatory reveals evidence for a third planet orbiting the nearby (4.69 pc) dM4 star GJ 876. TheExpand
A Four-planet System Orbiting The K0V Star HD?141399
We present precision radial velocity (RV) data sets from Keck-HIRES and from Lick Observatory's new Automated Planet Finder Telescope and Levy Spectrometer on Mt. Hamilton that reveal aExpand
Planetary Companions around Two Solar-Type Stars: HD 195019 and HD 217107*
We have enlarged the sample of stars in the planet search at Lick Observatory. Doppler measurements of 82 new stars observed at Lick Observatory, with additional velocities from Keck Observatory,Expand
Two New Candidate Planets in Eccentric Orbits
Doppler measurements of two G-type main-sequence stars, HD 210277 and HD 168443, reveal Keplerian variations that imply the presence of companions with masses (M sin i) of 1.28 and 5.04 MJ (where MJExpand
A super-Earth orbiting the nearby M-dwarf GJ 536
We report the discovery of a super-Earth orbiting the star GJ 536 based on the analysis of the radial-velocity time series from the HARPS and HARPS-N spectrographs. GJ 536 b is a planet with aExpand
A Long‐Period Jupiter‐Mass Planet Orbiting the Nearby M Dwarf GJ 849
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 AU, GJ 849b is the first Doppler‐detected planetExpand
Exploring the Frequency of Close-in Jovian Planets around M Dwarfs
We discuss our high-precision radial velocity results of a sample of 90 M dwarfs observed with the Hobby-Eberly Telescope and the Harlan J. Smith 2.7 m Telescope at McDonald Observatory, as well asExpand
The HARPS search for southern extra-solar planets - VI. A Neptune-mass planet around the nearby M dwarf Gl 581
We report the discovery of a Neptune-mass planet around Gl 581 (M3V, M = 0.31 ), based on precise Doppler measurements with the HARPS spectrograph at La Silla Observatory. The radial velocitiesExpand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 34 REFERENCES
The Discovery of a Planetary Companion to 16 Cygni B
High-precision radial-velocity observations of the solar-type star 16 Cygni B (HR 7504, HD 186427), taken at McDonald Observatory and at Lick Observatory, have each independently discovered periodicExpand
DETECTION OF EXTRASOLAR GIANT PLANETS
▪ Abstract Eight extrasolar planet candidates have now been identified, all revealed by Keplerian Doppler shifts in their host stars. The masses (m sin i) lie between 0.5 and 7 MJUP, and theExpand
Orbital migration of the planetary companion of 51 Pegasi to its present location
THE recent discovery1 and confirmation2 of a possible planetary companion orbiting the solar-type star 51 Pegasi represent a breakthrough in the search for extrasolar planetary systems. Analysis ofExpand
Three New “51 Pegasi-Type” Planets*
We report Keplerian Doppler velocity variations, consistent with orbiting "51 Pegasi-type" planets, for the three stars HR 3522 (G8V), HR 5185 (F7V), and HR 458 (F8V). HR 3522 exhibits a velocityExpand
On the Origin of Massive Eccentric Planets
We propose a merger scenario for the newly discovered extrasolar planets around 70 Vir (Marcy & Butler) and HD 114762 (Latham, Stefanik, & Mazeh; Marcy & Butler). These planets have mass Mp sin i =Expand
Gravitational scattering as a possible origin for giant planets at small stellar distances
TLDR
An alternative model for planetary migration that can account for two large orbital eccentricities of giant planets that are difficult to reconcile with a tidal-linkage model is described. Expand
A Planet Orbiting the Star ρ Coronae Borealis
We report the discovery of near-sinusoidal radial velocity variations of the G0V star ρ CrB, with period 39.6 days and amplitude 67 m s-1. These variations are consistent with the existence of anExpand
From brown dwarfs to planets
The burst of discoveries of planets and brown dwarfs during the past year has revealed an unexpected diversity of planetary systems. 51 Pegasi, the rst extrasolar planet detected in orbit around aExpand
A systematic search for brown dwarfs orbiting nearby stars
Survey data for brown dwarf and stellar companions relative to known M dwarf stars within 5 pc north of -30 deg are analyzed. A region 0.2 to 5 arcsec in radius around 27 stars at the IR H and KExpand
Orbital evolution and migration of giant planets: modeling extrasolar planets
Giant planets in circumstellar disks can migrate inward from their initial (formation) positions. Radial migration is caused by inward torques between the planet and the disk, by outward torquesExpand
...
1
2
3
4
...