Light variations and flares on V471 Tauri

Details Light variations and flares on V471 Tauri Light variations and flares on V471 Tauri

Jun 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993ap%26ss.204..297t&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 204, no. 2, p. 297-304.

Astronomy and Astrophysics

Astrophysics

3

Binary Stars, Dwarf Stars, Light Curve, Stellar Evolution, Stellar Luminosity, Astronomical Photometry, Eclipses, Stellar Flares

Scientific paper

Two-color photometric observations of the white-dwarf and K-dwarf eclipsing binary V471 Tau were made during the last four years. The resulting light curves and thirteen timings of mid-eclipse are presented. During the observations, two flares were obtained on September 23 and December 23, 1992. Both events occurred just after the fourth contact. The increment in the brightness was measured as 0.067 m. The energy liberated by the flare was computed to be 5.43 x 10 exp 32 erg/s in the Johnson B band, which amounts 1.13 times that of the total radiation of the K-dwarf.

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