Chromospheric CaII emission in nearby F, G, K, and M stars
Feb, 2004
62 pages
Published in:
- Astrophys.J.Suppl. 152 (2004) 261
e-Print:
- astro-ph/0402582 [astro-ph]
DOI:
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Abstract: (arXiv)
We present chromospheric CaII activity measurements, rotation periods and ages for ~1200 F-, G-, K-, and M- type main-sequence stars from ~18,000 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 for 1228 stars, ~1000 of which have no previously published S values. We also present precise time series of activity measurements for these stars.References(26)
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