Abstract

We present the results of our long-term photometric and spectroscopic monitoring with the 1.5-m telescope RTT-150 for the optical counterpart of the high-mass X-ray binary IGR J21343+4738 discovered in 2002 by the INTEGRAL space X-ray observatory. The X-ray source was also repeatedly detected by the telescopes of the SRG observatory during the all-sky surveys in the period 2019–2021. We have investigated the spectroscopic and photometric variabilities of the optical counterpart, a Be star, caused by physical processes in the equatorial disk. The evolution of the equatorial disk parameters over a long time interval of 16 years has been analyzed.

中文翻译：

---

高质量X射线双星IGR J21343+4738中Be星盘的研究

摘要

我们展示了使用 1.5 米望远镜 RTT-150 对 2002 年 INTEGRAL 空间 X 射线天文台发现的高质量 X 射线双星 IGR J21343+4738 的光学对应物进行长期光度和光谱监测的结果。SRG天文台的望远镜在2019-2021年期间的全天巡天中也多次探测到该X射线源。我们研究了由赤道盘中的物理过程引起的光学对应物 Be 星的光谱和光度变化。分析了赤道盘参数在16年的较长时间间隔内的演变。