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

被引：38

作者：

Fischer, DA

Marcy, GW

Butler, RP

Vogt, SS

Walp, B

Apps, K

机构：

[1] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA

[2] Carnegie Inst Sci, Dept Terr Magnetism, Washington, DC 20015 USA

[3] Univ Calif Santa Cruz, Univ Calif Observ, Lick Observ, Santa Cruz, CA 95064 USA

[4] Univ Sussex, Brighton BN1 9QJ, E Sussex, England

来源：

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC | 2002年 / 114卷 / 795期

关键词：

D O I：

10.1086/341677

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 M-circle dot yields a Keplerian companion with M sine i=11.9 M-J 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 M-circle dot implies a companion mass M sin i=3.7 M-J and semimajor axis of 2.2 AU. For HD 106252, we find P=1503.3+/-62 days, K=150.9+/-25 s(-1), and eccentricity e=0.57+/-0.11. The assumed stellar mass of 0.96 M-circle dot implies M sin i=6.96 M-J and semimajor axis of 2.42 AU.

引用

页码：529 / 535

页数：7

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