Astronomy and Astrophysics the Closest Extrasolar Planet a Giant Planet around the M4 Dwarf Gl 876
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چکیده
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 ⊙ , the mass function implies a mass for the companion of 2/sin i Jupiter masses.
منابع مشابه
The closest extrasolar planet A giant planet around the M 4 dwarf Gl 876 ? , ? ?
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 , t...
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تاریخ انتشار 1998