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Light variations and flares on V471 tauri

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Abstract

Two-colour 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 December23, 1992. Both events occurred just after the fourth contact. The increment in the brightness was measured as 0 m. 067. The energy liberated by the flare was computed to be 5.43 × 1032 erg s−1 in the JohnsonB band, which amounts 1.13 times that of the total radiation of the K-dwarf.

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Authors and Affiliations

  1. Ege University Observatory, Bornova, Izmir, Turkey

    Z. Tunca, V. Keskin, S. Evren, C. Ibanoglu & M. C. Akan

Authors
  1. Z. Tunca
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  2. V. Keskin
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  3. S. Evren
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  4. C. Ibanoglu
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  5. M. C. Akan
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Tunca, Z., Keskin, V., Evren, S. et al. Light variations and flares on V471 tauri. Astrophys Space Sci 204, 297–304 (1993). https://doi.org/10.1007/BF00658032

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  • DOI: https://doi.org/10.1007/BF00658032

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