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

页码：348 / 356

页数：9

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