AAVSO: American Association of Variable Star Observers

A Photometric Study of the Eclipsing Binary Star V2790 Orionis

Volume 44 number 1 (2016)

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Edward J. Michaels
Stephen F. Austin State University, Department of Physics and Astronomy, P.O. Box 13044, Nacogdoches, TX 75962; emichaels@sfasu.edu


Presented in this paper is the first precision set of multi-band light curves for the eclipsing binary star V2790 Ori. A new linear ephemeris gives an orbital period of 0.28784176 d. The light curves were analyzed with the Wilson-Devinney program to determine the best-fit stellar model. Star spots were required in the model to account for asymmetries in the light curves. The synthetic light curve solutions presented are consistent with a W-type contact binary.