Rotation and activity across HR diagram Virtual Observatory Resource

Authors

1. Lehtinen J.J.
2. Spada F.
3. Kapyla M.J.
4. Olspert N.
5. Kapyla P.J.

Published by

CDS

Abstract

We present mean chromospheric CaII H and K activity levels and rotation periods, derived from the Mount Wilson Observatory HK Project time series. These are combined with theoretically calculated convective turnover times to derive Rossby numbers and connect the rotational scaling of chromospheric activity of main sequence and post-main sequence stars with each other.

Keywords

1. dwarf-stars
2. giant-stars

Bibliographic source Bibcode

2020NatAs...4..658L

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