An Analysis of TY URSAE MAJORIS, a Short Period Contact Binary

Details An Analysis of TY URSAE MAJORIS, a Short Period Contact Binary An Analysis of TY URSAE MAJORIS, a Short Period Contact Binary

Dec 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aas...191.4501w&link_type=abstract

American Astronomical Society, 191st AAS Meeting, #45.01; Bulletin of the American Astronomical Society, Vol. 29, p.1280

Astronomy and Astrophysics

Astronomy

Scientific paper

The contact binary TY URSAE MAJORIS was observed during 8 nights with the 1.0-m Ritchey-Chretien reflector at the Flagstaff Station of the USNO. The relatively faint V magnitude at minimum light (12.1 mag.) accounts for the neglect of this system which eclipses every 0.355 days. A light curve analysis of over 800 UBV observations is presented in this paper. The system is composed of two F stars (F0+F7). A period change was detected in only two days and is attributed to rapid mass exchange between the components. The Wilson-Devinney Method was used for the light curve solution and the Binary Maker Program by Bradstreet aided in the interpretation of the synthesized system, which included star-spot modeling. With so few W UMa systems known, it is felt that the addition of TY UMa to the list of light curve analyses will be of value.

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