Ultraviolet spectra of dwarf solar neighbourhood stars. I

Details Ultraviolet spectra of dwarf solar neighbourhood stars. I Ultraviolet spectra of dwarf solar neighbourhood stars. I

Dec 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981mnras.197..815b&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 197, Dec. 1981, p. 815-827.

Astronomy and Astrophysics

Astronomy

36

Chromosphere, Dwarf Stars, Flare Stars, Iue, Stellar Spectra, Ultraviolet Spectra, Emission Spectra, Line Spectra, M Stars, Spectrum Analysis, Stellar Flares, Stellar Models

Scientific paper

Short-wavelength IUE spectra of three nearby M-type dwarfs are presented. Two of these stars, Gliese 867 A and AU Mic, are active UV Ceti flare stars and their UV spectra exhibit strong emission lines, characteristic of active chromospheres. The third star, Gliese 825, is a low-activity flare star and its spectrum reveals no chromospheric lines. A strong UV continuum exists in one of the spectra of Gliese 867 A and it is deduced that a flare took place during the exposure. A spectrum of the flare light is extracted and compared with the predictions of various flare models.

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