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.
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收藏
页码：902 / 905
页数：2
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