H-alpha emission in HR 1099

Details H-alpha emission in HR 1099 H-alpha emission in HR 1099

Mar 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...254l..41f&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 254, Mar. 15, 1982, p. L41-L45. Research supported by the Natural Sc

Astronomy and Astrophysics

Astronomy

9

Binary Stars, Chromosphere, H Alpha Line, Radio Sources (Astronomy), Stellar Radiation, Stellar Flares

Scientific paper

Observations of the H-alpha emission lines of the close binary HR 1099, a star that exhibits the RS CVn phenomena, are presented. A strong correlation is found between the H-alpha flux and the log of the radio flux. The velocities measured from the H-alpha emission profiles and the volumes calculated from the emission integrals are consistent with the chromospheric origin of the emission. Finally, a small H-alpha emitting volume can account for the increase in the emission integral during a flare. This strongly suggests that a localized region in the chromosphere is responsible for the enhancement in the emission during a flare.

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