Excess CaII H&K emission in active binaries (Montes+, 1996)

Details Excess CaII H&K emission in active binaries (Montes+, 1996) Excess CaII H&K emission in active binaries (Montes+, 1996)

May 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996ycat..33120221m&link_type=abstract

VizieR On-line Data Catalog: J/A+A/312/221. Originally published in: 1996A&A...312..221M

Computer Science

Stars: Double And Multiple, Spectroscopy

Scientific paper

In this work we analyze the behaviour of the excess CaII H & K and H_epsilon emissions in a sample of 73 chromospherically active binary systems (RS CVn and BY Dra classes), of different activity levels and luminosity classes. This sample includes the 53 stars analyzed by Fernandez-Figueroa et al. (1994) and the observations of 28 systems described by Montes et al. (1995). By using the spectral subtraction technique (subtraction of a synthesized stellar spectrum constructed from reference stars of spectral type and luminosity class similar to those of the binary star components) we obtain the active-chromosphere contribution to the CaII H & K lines in these 73 systems. We have determined the excess CaII H & K emission equivalent widths and converted them into surface fluxes. The emissions arising from each component were obtained when it was possible to deblend both contributions. (4 data files).

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