DISCOVERY OF A 19-HOUR PERIOD IN AQUILA X-1

被引：0
|
作者：
CHEVALIER, C
ILOVAISKY, SA
机构：
来源：
ASTRONOMY & ASTROPHYSICS | 1991年 / 251卷 / 01期
关键词：
X-RAY SOURCES; BINARIES; TRANSIENTS;
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We report the discovery of a 19-hour periodic modulation in V1333 Aql, the optical counterpart of the low-mass X-ray binary Aquila X-1, which probably represents the orbital period of the system. The observations were made during the five-month long active state of this recurrent transient source in 1990. The modulation is approximately sinusoidal, has a peak-to-peak amplitude of 0.4 magnitude in V and is superposed onto a variable base level.
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页码：L11 / L13
页数：3
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