منابع مشابه
Photometric follow - up of the transiting planet around WASP - 1
We report on photometric follow-up of the recently discovered transiting planet WASP-1b. We observed two transits with the Wise Observatory 1m telescope, and used a variant of the EBOP code simultaneously with the SysRem detrending code for fitting the light curve. Assuming a stellar mass of 1.15M⊙ we derived a planetary radius of Rp = 1.398± 0.076RJ and mass of Mp = 0.867±0.073MJ. We also deri...
متن کاملThe Planet around 51 Pegasi
Doppler measurements of 51 Pegasi have been made from 1995 October through 1996 August, with a precision of 5 m s~1. We Ðnd a period of 4.231 days, a velocity amplitude of 56^ 1 m s~1, and a velocity curve that is essentially sinusoidal, all in excellent agreement with Mayor & Queloz. The only viable interpretation is a companion having minimum mass, m sin i \ 0.45 in a circular orbit of MJupit...
متن کاملA False Planet around Hd 192263
We present new high-precision Strömgren photometry and Ca ii H and K spectrophotometry of HD 192263. Based on radial velocity variations detected previously by two groups, this K2 V star was thought to host a 0.75 MJup (minimum mass) planetary companion in a 24 day orbit. Our photometric observations reveal periodic variations that match the purported planetary orbital period, while the Ca ii H...
متن کاملA Habitable Planet around HD 85512 ?
Aims. In this study we assess the habitability of HD85512 b, a 3.6 MEarth planet orbiting a K5V star. The radial velocity data and orbital parameters for HD 85512 b have just been published, based on data from the dedicated HARPS-upgrade GTO program. Methods. This paper outlines a simple approach to evaluate habitability of rocky planets from radial velocity (RV) searches by using atmospheric m...
متن کاملThe 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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ژورنال
عنوان ژورنال: Nature
سال: 1985
ISSN: 0028-0836,1476-4687
DOI: 10.1038/318242a0