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

作者：Yuan Jin Zhao^*

来源：Research in Astronomy and Astrophysics, 2011, 11(10): 1158-1162.

• stars: binaries: close
• stars: binaries: eclipsing
• stars: individual: FT Ursae Majoris

The multicolor photometric observations of the neglected eclipsing binary FT Ursae Majoris (FT UMa) were obtained in 2010. The 2003 version of the Wilson-Devinney 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, similar to 0.15 mag, arises mainly from a moderately low inclination angle of i = 62.80 degrees and almost identical components in size rather than the light dilution of a third component, which contributes light of only similar to 10%.

• 出版日期2011-10
• 单位山西师范大学