Simultaneous Photoelectric and Spectral Observations of the Star Ev-Lacertae

Details Simultaneous Photoelectric and Spectral Observations of the Star Ev-Lacertae Simultaneous Photoelectric and Spectral Observations of the Star Ev-Lacertae

Oct 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994ap.....37..312m&link_type=abstract

Astrophysics, Vol. 37, NO.4/OCT-DEC, P.312, 1994

Astronomy and Astrophysics

Astrophysics

Scientific paper

We discuss the results of simultaneous photoelectric and spectral observations of the flare star EV Lac. The observations of EV Lac were carried out at the National Astronomical Observatory of the Bulgarian Academy of Sciences in August 1986. The photoelectric observations were conducted in the U-color with 1 sec time integration on a 60cm telescope. The effective time of photoelectric observations was 13 hours. The spectral observations were carried out on a two-meter telescope. During one night 35 spectrograms of the star EV Lac were obtained, each of which lasted 2 minutes. The equivalent widths of the Hα emission line were measured. During the photoelectric observations 6 flares were recorded. One of the two comparison stars, C2 showed variable brightness.

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