Chromospheric Ca II emission in nearby F, G, K, and M stars

被引：473

作者：

Wright, JT

Marcy, GW

Butler, RP

Vogt, SS

机构：

[1] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA

[2] Carnegie Inst Washington, Dept Terr Magnetism, Washington, DC 20015 USA

[3] Univ Calif Santa Cruz, Univ Calif Lick Observ, Santa Cruz, CA 95064 USA

来源：

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES | 2004年 / 152卷 / 02期

关键词：

stars : activity; stars : chromospheres; stars : rotation;

D O I：

10.1086/386283

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present chromospheric Ca II H and K activity measurements, rotation periods, and ages for similar to1200 F, G, K, and M type main-sequence stars from similar to18,000 archival spectra taken at Keck and Lick Observatories as a part of the California and Carnegie Planet Search Project. We have calibrated our chromospheric S-values against the Mount Wilson chromospheric activity data. From these measurements we have calculated median activity levels and derived R'(HK), stellar ages, and rotation periods from general parameterizations for 1228 stars, similar to1000 of which have no previously published S-values. We also present precise time series of activity measurements for these stars.

引用

页码：261 / 295

页数：35

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