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Spectroscopy of Southern Active Stars

Published online by Cambridge University Press:  12 April 2016

O. Vilhu ,
B. Gustafsson  and
F.M. Walter
O. Vilhu
Affiliation:
Observatory and Astrophysics Laboratory, University of Helsinki, SF-00130 Helsinki, Finland
B. Gustafsson
Affiliation:
Uppsala Astronomical Observatory, Box 515, S-75120 Uppsala, Sweden
F.M. Walter
Affiliation:
SUNY, Earth and Space Sciences, Stony Brook, NY 11794-2100, USA

Abstract

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Hα and HeI D3 lines were observed in five active cool stars over their relatively short rotation periods. Three of the stars (AB Dor, Rstl37B, HD82558) are in the pre main sequence phase (as deduced from their lithium abundances), while two are post main sequence FK Comae type stars (HD32918 and BD-223467) (Vilhu et al., 1991). We present the results of these observations and point out the physical similarity of the Hα and He D3 transitions (Fig.1).

Type
Part IV Stellar activity
Information
International Astronomical Union Colloquium , Volume 130: The Sun and Cool Stars: activity, magnetism, dynamos , 1991 , pp. 492 - 493
Copyright
Copyright © Springer-Verlag 1991

References

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