A SUB-STELLAR COMPANION AROUND THE F7 V STAR HD 8673

被引：13
|
作者：
Hartmann, Michael [1 ]
Guenther, Eike W. [1 ]
Hatzes, Artie P. [1 ]
机构：
[1] Thuringer Landessternwarte Tautenburg, D-07778 Tautenburg, Germany
来源：
ASTROPHYSICAL JOURNAL | 2010年 / 717卷 / 01期
关键词：
brown dwarfs; planetary systems; stars: individual (HD 8673); stars: low-mass; techniques: radial velocities; EXTRA-SOLAR PLANETS; NULLING INTERFEROMETER; COOL STARS; CORALIE SURVEY; GIANT PLANETS; BROWN DWARFS; NEARBY STARS; SPACED DATA; MASS; ECCENTRICITY;
D O I：
10.1088/0004-637X/717/1/348
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
In order to investigate the dependence of planet formation on stellar mass, we have been monitoring a sample of F-type main-sequence stars with the 2.0 m Alfred-Jensch telescope of the Thuringer Landessternwarte Tautenburg. This survey is based on high-precision radial velocity (RV) measurements using the coude echelle spectrograph and an iodine absorption cell. We present RV measurements of the F7 V star HD 8673 that show a long-term variability of 1634 days with a semi-amplitude K = 288 m s(-1) that can be explained most reasonably by an orbiting sub-stellar companion with a minimum mass of 14.2 M(Jup) in a high-eccentricity (e = 0.723) Keplerian orbit.
引用
收藏
页码：348 / 356
页数：9
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