New features in the EV Lacertae flares discovered by fast high precision UBVRI photometry

Details New features in the EV Lacertae flares discovered by fast high precision UBVRI photometry New features in the EV Lacertae flares discovered by fast high precision UBVRI photometry

Jun 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998a%26a...334..931z&link_type=abstract

Astronomy and Astrophysics, v.334, p.931-934 (1998)

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3

Stars: Individual: Ev Lac, Stars: Flare, Stars: Variables: Others

Scientific paper

The flares fine structure lies often below the detection limit for photometry data. UBVRI high-speed observations combined with synchronous monitoring at two telescopes situated far from each other allowed us to detect new small-amplitude features in the flare activity of EV Lac. Digital filtering of the light curves with a Gaussian window was used. We found that some flare events are composed of a flare and an intensity drop having a crater-shaped structure centered at the flare peak. Fading amplitudes extend from 0.1 to 0.01 mag.

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