Ultraviolet flares on II Pegasi

Details Ultraviolet flares on II Pegasi Ultraviolet flares on II Pegasi

Oct 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...224..153d&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 224, no. 1-2, Oct. 1989, p. 153-161.

Astronomy and Astrophysics

Astrophysics

45

Binary Stars, Flare Stars, Stellar Flares, Stellar Spectra, Ultraviolet Spectra, Variable Stars, Companion Stars, Irregular Variable Stars, K Stars, Stellar Models

Scientific paper

UV spectroscopic observations of the RS CVn star, II Peg, were obtained in February 1983. The observations show evidence for flare activity in greatly enhanced chromospheric and transition region emission lines. The flare radiation is isolated and the electron pressures of the mean quiescent atmosphere and the two flares are derived from the intersystem line flux ratios. Estimates are given of the total flare power output over the whole atmosphere and the surface filling factor for the flares. The implications of the observations for studies of flares on RS CVn stars are considered.

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