The closest extrasolar planet. A giant planet around the M4 dwarf GL 876
Abstract
Precise radial velocity observations of the nearby M4 dwarf Gl 876 with the Observatoire de Haute Provence 1.93 m telescope and the new 1.20 m swiss telescope at la Silla indicate the presence of a jovian mass companion to this star. The orbital fit to the data gives a period of 60.8 days, a velocity amplitude of 246m.s(-1) and an eccentricity of 0.34. Assuming that Gl 876 has a mass of 0.3{M_sun}, the mass function implies a mass for the companion of 2/sin i Jupiter masses. Partly based on observations made at the Observatoire de Haute Provence (CNRS)
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- October 1998
- DOI:
- 10.48550/arXiv.astro-ph/9808026
- arXiv:
- arXiv:astro-ph/9808026
- Bibcode:
- 1998A&A...338L..67D
- Keywords:
-
- GIANT PLANET FORMATION;
- EXTRASOLAR PLANETS;
- GIANT PLANETS;
- M DWARF STARS;
- Astrophysics
- E-Print:
- 4 pages LaTeX, Accepted for publication in A&