Spectroscopy and photometry of nearby young solar analogs

被引：108

作者：

Gaidos, EJ

Henry, GW

Henry, SM

机构：

[1] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA

[2] Tennessee State Univ, Ctr Excellence Informat Syst, Nashville, TN 37203 USA

来源：

ASTRONOMICAL JOURNAL | 2000年 / 120卷 / 02期

关键词：

planetary systems; solar system : formation; stars : evolution; Sun;

D O I：

10.1086/301488

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present new photometry and spectroscopy of 34 stars from a catalog of 38 nearby (d < 25 pc) G and K dwarfs selected as analogs to the early Sun. We report that the least active star in our sample is also slowly rotating and probably of solar age. Two other stars appear to be evolved objects that have recently acquired angular momentum. A fourth star may be a spectroscopic binary. Many of the other stars belong to previously identified common proper-motion groups. Space motions, lithium abundances, and Ca II emission of these stars suggest ages between 70 and 800 Myr.

引用

页码：1006 / 1013

页数：8

共 39 条

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Binney J., 2008, Galactic Dynamics

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