EV Lacertae - Relationship of the flares to the nonflare variability

Details EV Lacertae - Relationship of the flares to the nonflare variability EV Lacertae - Relationship of the flares to the nonflare variability

Jun 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984azh....61..500r&link_type=abstract

(Astronomicheskii Zhurnal, vol. 61, May-June 1984, p. 500-509) Soviet Astronomy (ISSN 0038-5301), vol. 28, May-June 1984, p. 293

Astronomy and Astrophysics

Astronomy

Chromosphere, Flare Stars, Stellar Flares, Stellar Magnitude, Ubv Spectra, Line Spectra, Stellar Spectra, Stellar Spectrophotometry, Variability, Variable Stars

Scientific paper

The observations of the flare star EV Lac in July - September 1981 have confirmed the existence of photometric variability outside the flares during the night. It was found that, as a rule a slow increase of brightness in U and B bands during 1 - 2 hours preceded the flares . It is suggested that the variability outside the flares is the result of the variability of chromospheric emission lines and continuum that are emitted by chromospheric pre-flare formations.

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