Excess Hα emission in chromospherically active binaries: the spectroscopic survey.

Details Excess Hα emission in chromospherically active binaries: the spectroscopic survey. Excess Hα emission in chromospherically active binaries: the spectroscopic survey.

Jan 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995a%26as..109..135m&link_type=abstract

Astronomy and Astrophysics Suppl. 109, 135-145 (1995)

Astronomy and Astrophysics

Astrophysics

44

Stars: Activity, Stars: Binaries: Close, Stars: Chromospheres, Stars: Late-Type, Stars: Rotation

Scientific paper

We present new spectroscopic Hα observations for a sample of 24 chromospherically active binary systems (RS CVn and BY Dra classes), of different activity levels. By using the spectral subtraction technique (subtraction of a synthesized stellar spectrum constructed from reference stars of similar spectral type and luminosity class) we obtain the active-chromosphere contribution to the Hα line. The Hα emissions arising from each individual star were obtained when it was possible to deblend the contribution of both components.

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