Planetary Companions to HD 136118, HD 50554, and HD 106252

Autor:	R. Paul Butler, Bernie Walp, Geoffrey W. Marcy, Kevin Apps, Steven S. Vogt, Debra A. Fischer
Rok vydání:	2002
Předmět:	Physics Stellar mass Space and Planetary Science Planet Semi-major axis Brown dwarf Astronomy Astronomy and Astrophysics Astrophysics Planetary system Orbital period Eccentricity (mathematics)
Zdroj:	Publications of the Astronomical Society of the Pacific. 114:529-535
ISSN:	1538-3873 0004-6280
Popis:	Precise Doppler observations at Lick Observatory have revealed a substellar companion orbiting the F9 V star HD 136118 with an orbital period P=1209 ± 24 days, velocity semiamplitude K = 212 ± 6 m s–1, and eccentricity of 0.37 ± 0.025. The assumed stellar mass of 1.24 yields a Keplerian companion with M sin i = 11.9 MJ and semimajor axis of 2.3 AU. We also confirm the orbital solutions for two previously announced planets, one orbiting the F8 V star HD 50554 and one orbiting the G0 V star HD 106252. Our orbital solution for HD 50554 yields P = 1254 ± 34 days, K = 78.5 ± 6.7 m s–1, and e = 0.51 ± 0.06. The assumed stellar mass of 1.065 implies a companion mass M sin i = 3.7 MJ and semimajor axis of 2.2 AU. For HD 106252, we find P = 1503.3 ± 62 days, K = 150.9 ± 25 m s–1, and eccentricity e = 0.57 ± 0.11. The assumed stellar mass of 0.96 implies M sin i = 6.96 MJ and semimajor axis of 2.42 AU.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4cb9a53fbc0f1d7d186d0ab1f5f56380 https://doi.org/10.1086/341677 Zobrazit plný text záznamu