Spectral study of the flare star EV Lac |
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| Authors: | N D Melikian V S Tamazian J A Docobo A A Karapetian R Sh Natsvlishvili |
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| Institution: | (1) B. A. Ambartsumyan Byurakan Astrophysical Observatory, Armenia;(2) Ramon Maria Aller Astronomical Observatory, University of Santiago de Compostela, Spain;(3) E. K. Kharadze Abastumani Astrophysical Observatory, Georgia |
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| Abstract: | Spectral observations of the flare star EV Lac made on the 2.6-m telescope at the Byurakan Observatory in 2000–2002 are reported.
A powerful flare was detected and it was possible to follow the variation in the equivalent widths of the Hα and Hβ lines,
both during the flare and during the quiescent phase of the star. It is shown that the profiles and equivalent widths of the
lines underwent substantial changes. The equivalent widths of these emission lines reached a maximum roughly 40 min after
the flare maximum.
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Translated from Astrofizika, Vol. 49, No. 4, pp. 573–583 (November 2006). |
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| Keywords: | stars flare spectra — individual EV Lac |
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