The HARPS search for southern extra-solar planets - VI. A Neptune-mass planet around the nearby M dwarf Gl 581

@article{Bonfils2005TheHS,
  title={The HARPS search for southern extra-solar planets - VI. A Neptune-mass planet around the nearby M dwarf Gl 581},
  author={Xavier Bonfils and Thierry Forveille and Xavier Delfosse and St{\'e}phane Udry and Michel Mayor and Christian Perrier and François Bouchy and Francesco A. Pepe and Didier Queloz and J L Bertaux},
  journal={Astronomy and Astrophysics},
  year={2005},
  volume={443}
}
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 velocities reveal a circular orbit of period P = 5.366 days and semi-amplitude K1 = 13.2 m s-1. The resulting minimum mass of the planet ( ) is only 0.052 = 0.97 = 16.6 making Gl 581b one of the lightest extra-solar planet known to date. The Gl 581 planetary system is only the third centered on an M dwarf, joining… Expand
View PDF on arXiv
182 Citations
Highly Influential Citations
35
Background Citations
108
Methods Citations
29
Results Citations
12

Figures and Tables from this paper

182 Citations

Citation Type

Citation Type

The HARPS search for southern extra-solar planets - V. A 14 Earth-masses planet orbiting HD 4308
We present here the discovery and characterisation of a very light planet around HD4308. The planet orbits its star in 15.56 days. The circular radial-velocity variation presents a tiny… Expand
The HARPS search for southern extra-solar planets. XI. Super-Earths (5 and 8 M{⊕}) in a 3-planet system
This Letter reports on the detection of two super-Earth planets in the Gl 581 system, which is already known to harbour a hot Neptune. One of the planets has a mass of 5 M⊕ and resides at the “warm”… Expand
The HARPS search for southern extra-solar planets. X. A m sin i = 11 M_â planet around the nearby spotted M dwarf GJ 674
Context. How planet properties depend on stellar mass is a key diagnostic of planetary formation mechanisms. Aims. This motivates planet searches around stars that are significantly more massive or… Expand
The HARPS search for southern extra-solar planets - XXXVI. Planetary systems and stellar activity of the M dwarfs GJ 3293, GJ 3341, and GJ 3543
Context. Planetary companions of a fixed mass induce reflex motions with a larger amplitude around lower-mass stars, which adds to making M dwarfs excellent targets for extra-solar planet searches.… Expand
The HARPS search for southern extra-solar planets: XVIII. An Earth-mass planet in the GJ 581 planetary system
The GJ 581 planetary system was already known to harbour three planets, including two presumably rocky planets which straddle its habitable zone. We report here the detection of an additional planet… Expand
The HARPS search for southern extra-solar planets - XIX. Characterization and dynamics of the GJ 876 planetary system
Precise radial-velocity measurements for data acquired with the HARPS spectrograph infer that three planets orbit the M4 dwarf star GJ876. In particular, we confirm the existence of planet d, which… Expand
An m sin i = 24 M⊕ Planetary Companion to the Nearby M Dwarf GJ 176*
We report the detection of a planetary companion with a minimum mass of -->m sin i = 0.0771 MJup = 24.5 M⊕ to the nearby ( -->d = 9.4 pc) M2.5 V star GJ 176. The star was observed as part of our M… Expand
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 planet… Expand
A JUPITER-LIKE PLANET ORBITING THE NEARBY M DWARF GJ 832*
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… Expand
The HARPS search for southern extra-solar planets. XVII. Super-Earth and Neptune-mass planets in m
We report on the detection of two new multiple planet systems orbiting solar-like stars HD 47 186 and HD 181 433. The first system contains a hot Neptune of 22.78 M⊕ with a 4.08-day period and a… Expand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 29 REFERENCES
A Neptune-Mass Planet Orbiting the Nearby M Dwarf GJ 436
We report precise Doppler measurements of GJ 436 (M2.5 V) obtained at Keck Observatory. The velocities reveal a planetary companion with orbital period of 2.644 days, eccentricity of 0.12 (consistent… Expand
The HARPS search for southern extra-solar planets - III. Three Saturn-mass planets around HD 93083, HD 101930 and HD 102117
We report on the detection of three Saturn-mass planets discovered with the HARPS instrument. HD 93083 shows radial-velocity (RV) variations best explained by the presence of a companion of 0.37 M… Expand
The HARPS search for southern extra-solar planets. I. HD 330075 b: A new "hot Jupiter"
We report on the first extra-solar planet discovered with the brand new HARPS instrument. The planet is a typical "hot Jupiter" with m2 sini = 0.62 MJup and an orbital period of 3.39 days, but from… Expand
The HARPS survey for southern extra-solar planets. II. A 14 Earth-masses exoplanet around μ Arae
In this letter we present the discovery of a very light planetary companion to the star mu Ara (HD160691). The planet orbits its host once every 9.5days, and induces a sinusoidal radial velocity… Expand
A Planet at 5 AU around 55 Cancri
We report precise Doppler-shift measurements of 55 Cancri (G8 V) obtained from 1989 to 2002 at Lick Observatory. The velocities reveal evidence for an outer planetary companion to 55 Cancri orbiting… Expand
A Planetary Companion to a Nearby M4 Dwarf, Gliese 876*
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… Expand
Toward a Deterministic Model of Planetary Formation. III. Mass Distribution of Short-Period Planets around Stars of Various Masses
The origin of a recently discovered close-in Neptune-mass planet around GJ 436 poses a challenge to the current theories of planet formation. On the basis of the sequential accretion hypothesis and… Expand
A DEDICATED M DWARF PLANET SEARCH USING THE HOBBY-EBERLY TELESCOPE
We present the first results from our planet-search program using the 9.2 m Hobby-Eberly Telescope (HET) at McDonald Observatory to detect planets around M-type dwarf stars by means of high-precision… Expand
An extrasolar planet that transits the disk of its parent star
Planets orbiting other stars could in principle be found through the periodic dimming of starlight as a planet moves across—or ‘transits’—the line of sight between the observer and the star.… Expand
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 of… Expand
...
1
2
3
...