Parent stars of extrasolar planets. IV. 14 Herculis, HD 187123, and HD 210277

被引：77
|
作者：
Gonzalez, G
Wallerstein, G
Saar, SH
机构：
[1] Univ Washington, Dept Astron, Seattle, WA 98195 USA
[2] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA
来源：
ASTROPHYSICAL JOURNAL | 1999年 / 511卷 / 02期
基金：
美国国家科学基金会;
关键词：
planetary systems; stars; individual; (14; Herculis; HD; 187123; 210277);
D O I：
10.1086/311847
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Spectroscopic analyses of 14 Her, HD 187123, and HD 210277, recently reported to harbor planets, reveal that these stars are metal rich. We find [Fe/H] = 0.50 +/- 0.05, 0.16 +/- 0.05, and 0.24 +/- 0.05 for 14 Her, HD 187123, and HD 210277, respectively. This is the first spectroscopic analysis of HD 187123; our results for 14 Her and HD 210277 are in agreement with published studies. It is shown that 14 Her and rho(1) Cnc are nearly identical in their bulk physical characteristics. This result, combined with their extreme metallicities, suggests that their physical parameters have been affected by the process that formed their planets. These two stars join a group of about half a dozen stars in the solar neighborhood with [Fe/H] greater than or equal to 0.4. It is also shown that 51 Peg and HD 187123, which have companions with similar orbital periods and masses, are nearly identical. We find v sin i approximate to 2.0 km s(-1) for HD 210277 from a high-resolution spectrum.
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收藏
页码：L111 / L114
页数：4
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