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.

引用

页码：L11 / L13

页数：3

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