HD 137510: An oasis in the brown dwarf desert

被引：36

作者：

Endl, M ^{[1
]}

Hatzes, AP

Cochran, WD

McArthur, B

Prieto, CA

Paulson, DB

Guenther, E

Bedalov, A

机构：

[1] Univ Texas, McDonald Observ, Austin, TX 78712 USA

[2] Thuringer Landessternwarte, D-07778 Tautenburg, Germany

来源：

ASTROPHYSICAL JOURNAL | 2004年 / 611卷 / 02期

基金：

美国国家科学基金会;

关键词：

planetary systems; stars : late-type; stars; low-mass; brown dwarfs; techniques : radial velocities;

D O I：

10.1086/422310

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Since the beginning of precise Doppler surveys, which have had stunning success in detecting extrasolar planetary companions, one surprising enigma has emerged: the relative paucity of spectroscopic binaries where the secondary mass lies in between the stellar and planetary mass regime. This gap in the mass function for close-in (a<3-4 AU) companions to solar-type stars is generally referred to as the "brown dwarf desert.'' Here we report the detection of a companion to HD 137510 (G0 IV), with a minimum mass of 26M(J), moving in an eccentric orbit ( e 0: 4) with a period of 798 days and an orbital semimajor axis of 1.85 AU. The detection is based on precise differential radial velocity data obtained by the McDonald Observatory and Thuringer Landessternwarte Tautenburg planet search programs.

引用

页码：1121 / 1124

页数：4

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