A multicolor photometric study of the neglected eclipsing binary FT Ursae Majoris

A multicolor photometric study of the neglected

eclipsing binary FT Ursae Majoris

Jin-Zhao Yuan

【期刊名称】《天文和天体物理学研究》 【年(卷),期】2011(011)010

【摘要】The multicolor photometric observations of the neglected eclipsing binary FT Ursae Majoris (FT UMa) were obtained in 2010.The 2003 version of the WilsonDevinney code was used to analyze the light curves in the B,V and R bands simultaneously.Based on the spectroscopic mass ratio q = 0.984 published by Pribulla et al.,it is found that FT UMa is an evolved contact binary with a contact degree of 15.3％.The low amplitude of light variations,～ 0.15 mag,arises mainly from a moderately low inclination angle of i = 62.80° and almost identical components in size rather than the light dilution of a third component,which contributes light of only ～ 10％. 【总页数】5页(1158-1162) 【关键词】

【作者】Jin-Zhao Yuan

【作者单位】Department of Physics, Shanxi Normal University, Linfen 041004, China; 【正文语种】中文 【中图分类】