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The Variations of the Hα line of HD199178

Published online by Cambridge University Press:  12 April 2016

Lauri Jetsu ,
Igor Savanov  and
Ilkka Tuominen
Lauri Jetsu
Affiliation:
Observatory and Astrophysics Laboratory, University of Helsinki, Tähtitorninmäki, SF–00130 Helsinki, Finland
Igor Savanov
Affiliation:
Crimean Astrophysical Observatory, P/O Nauchny, 334413 Crimea, USSR
Ilkka Tuominen
Affiliation:
Observatory and Astrophysics Laboratory, University of Helsinki, Tähtitorninmäki, SF–00130 Helsinki, Finland

Abstract

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Changes of emission cause variations of the Hα absorption line of HD 199178. The correlation with the simultaneous light curve may depend on the relative strength of the axisymmetric and non-axisymmetric components of the evolving spot configurations.

Type
Part IV Stellar activity
Information
International Astronomical Union Colloquium , Volume 130: The Sun and Cool Stars: activity, magnetism, dynamos , 1991 , pp. 486 - 488
Copyright
Copyright © Springer-Verlag 1991

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