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The photometric observations of ER vulpeculae: photometric analysis with the W-D code

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Abstract

The photometric observations of ER Vul were obtained in UBV light in 1994, at Birouni Observatory, University of Shiraz, Iran. The three light curves, which are almost complete, have been analyzed separately by means of Wilson and Devinney method (1971). The light curves include proximity effects, wave-like distortions, mutual eclipses, and short term light fluctuations. The appropriate value of the mass ratio of this system was found after extensive searches. ER Vul has a detached configuration where the two components are very nearly fill their Roche lobe. ER Vul has the characteristic of a RS CVn type system. The absolute dimensions for the primary and secondary of this system were calculated from its spectral types and by combining the photometric solution with inferred component radial velocities (Northcott and Bakos, 1967).

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Authors and Affiliations

  1. Physics Department, School of Sciences, University of Ferdowsi, Mashhad, Iran

    M. T. Edalati & F. Zeinali

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  1. M. T. Edalati
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  2. F. Zeinali
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Edalati, M.T., Zeinali, F. The photometric observations of ER vulpeculae: photometric analysis with the W-D code. Astrophys Space Sci 234, 271–280 (1995). https://doi.org/10.1007/BF00627672

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  • DOI: https://doi.org/10.1007/BF00627672

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