网站公告:

 2019全国中小学天文教师培训      北京师范大学天文系2019年优秀大学生夏令营



2016年 >> 返回 您当前所在位置:首页 > 科学研究 > 研究成果 > 2016年 > 正文

Photometric study of the eclipsing binary GR Bootis

更新时间:2017-05-22 15:19:59点击次数:814次字号:T|T

Abstract

We present CCD photometry and low-resolution spectra of the eclipsing binary GR Boo. A new ephemeris is determined based on all the available times of the minimum light. The period analysis reveals that the orbital period is decreasing with a rate of dP / dt = - 2.05 ×10-10 d yr-1 . A photometric analysis for the obtained light curves is performed with the Wilson-Devinney Differential Correction program for the first time. The photometric solutions confirm the W UMa-type nature of the binary system. The mass ratio turns out to be q = 0.985 ± 0.001 . The evolutionary status and physical nature of the binary system are briefly discussed.
2016, New Astronomy, 46, 15 (编辑:admin)