The orbital light curve of Aquila X-1

被引：0

作者：

Robinson, EL ^{[1
]}

Welsh, WF ^{[1
]}

Young, P ^{[1
]}

机构：

[1] Univ Texas, Dept Astron, Austin, TX 78731 USA

来源：

X-RAY ASTRONOMY: STELLAR ENDPOINTS, AGN, AND THE DIFFUSE X-RAY BACKGROUND | 2001年 / 599卷

关键词：

X-ray binaries; soft X-ray transients; X-ray novae;

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The R-band light curve of the X-ray nova/neutron-star binary Aql X-1 is dominated by ellipsoidal variations when it is at quiescence, although the ellipsoidal variations are severely distorted and have unequal maxima. The peak-to-peak amplitude of the variations is approximate to 0.25 mag. The orbital period measured from the ellipsoidal variations is consistent with the 18.95 hr period measured by Chevalier & Ilovaisky (1998); and the orbital inclination must be greater than 36, and probably lies between 36degrees and 55degrees. During outbursts the light curve of Aql X-1 is dominated by the "reflection effect," that is, by heating of the side of the companion star facing the neutron star.

引用

页码：902 / 905

页数：2

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