AAVSO: American Association of Variable Star Observers

Photometric Analysis of Two Contact Binary Systems: USNO-A2.0 1200-16843637 and V1094 Cassiopeiae

Volume 47 number 1 (2019)

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Surjit S. Wadhwa
Astronomical Society of New South Wales, Sydney, NSW, Australia; surjitwadhwa@gmail.com

Abstract

Ground-based photometry of two contact binary systems—USNO-A2.0 1200-16843637 and V1094 Cas—was analyzed using the Wilson-Devinney method. Both systems were found to be A-Type, with the smaller star being significantly cooler. Both systems show complete eclipses with good physical contact and almost identical mass ratio of approximately 0.23.