Multiple Companions to HD 154857 and HD 160691
نویسندگان
چکیده
منابع مشابه
Discovery of Close Companions to the Nearby Young Stars Hd 199143 and Hd 358623
Young stellar systems in the solar neighborhood provide valuable laboratories for detailed studies of star and planet formation. The bright F8V star HD 199143 and the Li-rich late-type emission line star HD 358623 are among the nearest young stars identified to date, and may be members of a young association in Capricornus. We present high-resolution near-infrared images of these two sources, o...
متن کاملAbout the Extrasolar Multi-planet System around Hd 160691
We re-analyze the precision radial velocity (RV) observations of HD160691 (μ Ara) by the Anglo-Australian Planet Search Team. The star is supposed to host two Jovian companions (HD160691b, HD160691c) in longperiod orbits (∼ 630 days and ∼ 2500 days, respectively) and a hot-Neptune (HD160691d) in ∼ 9 days orbit. We perform a global search for the best fits in the orbital parameters space with a ...
متن کاملOn the Extrasolar Multi-planet System around Hd 160691
We re-analyze the precision radial velocity (RV) observations of HD160691 (μ Ara) by the Anglo-Australian Planet Search Team. The star is supposed to host two Jovian companions (HD160691b, HD160691c) in longperiod orbits (∼ 630 days and ∼ 2500 days, respectively) and a hot-Neptune (HD160691d) in ∼ 9 days orbit. We perform a global search for the best fits in the orbital parameters space with a ...
متن کاملPlanet Migration and Binary Companions: the Case of Hd 80606b
The exo-solar planet HD 80606b has a highly eccentric (e = 0.93) and tight (a = 0.47 AU) orbit. We study how it might arrive at such an orbit and how it has avoided being tidally circularized until now. The presence of a stellar companion to the host star suggests the possibility that the Kozai mechanism and tidal dissipation combined to draw the planet inward well after it formed: Kozai oscill...
متن کاملM ar 2 00 3 Where is the second planet in the HD 160691 planetary system ?
The set of radial velocity measurements of the HD 160691 has been recently published by Jones et al. (2002b). It reveals a linear trend that indicates a presence of the second planet in this system. The preliminary double-Keplerian orbital fit to the observations, announced by the discovery team, describes a highly unstable, self-disrupting configuration. Because the observational window of the...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2004
ISSN: 0004-637X,1538-4357
DOI: 10.1086/425214