Mass loss by active late-type stars

Details Mass loss by active late-type stars Mass loss by active late-type stars

Feb 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992azh....69..138b&link_type=abstract

Astronomicheskii Zhurnal (ISSN 0004-6299), vol. 69, no. 1, Jan.-Feb. 1992, p. 138-146. In Russian.

Astronomy and Astrophysics

Astronomy

2

Late Stars, Plasma Dynamics, Stellar Activity, Stellar Mass Ejection, X Ray Astronomy, Stellar Magnetic Fields, Stellar Winds

Scientific paper

A solution for a plasma flow in slowly diverging coronal rays is used to calculate the mass loss by stars with surface activity under the assumption that streamers occupy 1/4 of the stellar surface on the level where the wind originates. It is shown that the mass loss values are not less than 10 exp -11 solar mass/yr for active dwarfs and are still larger for K-type subgiants in RS CVn-type binary systems. These mass-loss values, which are 2-3 orders of magnitude larger than the solar one, characterize late-type stars with the observed magnetic fluxes close to maximal ones. The implications of these results are discussed.

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