Chromospheric Ca ii Emission in Nearby F, G, K, and M Stars | Zendy

Jason T. Wright | Zendy; Geoffrey W. Marcy | Zendy; R. Paul Butler | Zendy; Steven S. Vogt | Zendy

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Chromospheric Ca ii Emission in Nearby F, G, K, and M Stars

Author(s) -

Jason T. Wright,

Geoffrey W. Marcy,

R. Paul Butler,

Steven S. Vogt

Publication year - 2004

Publication title -

the astrophysical journal supplement series

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.546

H-Index - 277

eISSN - 1538-4365

pISSN - 0067-0049

DOI - 10.1086/386283

Subject(s) - stars , physics , astrophysics , main sequence , stellar rotation , rotation (mathematics) , planet , spectral line , late type star , astronomy , astronomical spectroscopy , geometry , mathematics

We present chromospheric CaII activity measurements, rotation periods andages for ~1200 F-, G-, K-, and M- type main-sequence stars from ~18,000archival spectra taken at Keck and Lick Observatories as a part of theCalifornia and Carnegie Planet Search Project. We have calibrated ourchromospheric S values against the Mount Wilson chromospheric activity data. From these measurements we have calculated median activity levels and derivedR'HK, stellar ages, and rotation periods for 1228 stars, ~1000 of which have nopreviously published S values. We also present precise time series of activitymeasurements for these stars.

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