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Abstract: Photometric and spectroscopic observations of the unstudied 12th-magnitudeeclipsing binary GSC 04778-00152 are presented. We report the discovery of avisual companion about 1 mag fainter and 2 arcsec away from the binary. Bysubtracting the light contribution of the visual companion, we obtain the UBVRIlight curves of the binary system alone. The shape of the light curve indicatesthat GSC 04778-00152 is an A-type W UMa contact binary. From light-curvemodeling, we derive parameters of the binary system.



Autor: T. Tuvikene 1, T. Eenmäe 2, C. Sterken 1, E. Brogt 3 1 Vrije Universiteit Brussel, 2 Tartu Observatory, 3 Steward Observatory, D

Fuente: https://arxiv.org/



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