Investigation of the Disk of the Be Star in the High-Mass X-ray Binary IGR J21343+4738

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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. We have analyzed the evolution of the equatorial disk
parameters on a long time scale of 16 years.

About the authors

E. A. Nikolaeva

Sternberg Astronomical Institute, Moscow State University; Kazan Federal University

Email: evgeny.nikolaeva@gmail.com
Moscow, 119234 Russia; Kazan, Russia

I. F. Bikmaev

Sternberg Astronomical Institute, Moscow State University; Kazan Federal University

Email: evgeny.nikolaeva@gmail.com
Moscow, 119234 Russia; Kazan, 420000 Russia

E. N. Irtuganov

Kazan Federal University; Academy of Sciences of Tatarstan

Email: evgeny.nikolaeva@gmail.com
Kazan, 420000 Russia; Kazan, Russia

M. A. Gorbachev

Kazan Federal University; Academy of Sciences of Tatarstan

Email: evgeny.nikolaeva@gmail.com
Kazan, 420000 Russia; Kazan, Russia

M. V. Suslikov

Sternberg Astronomical Institute, Moscow State University; Kazan Federal University

Email: evgeny.nikolaeva@gmail.com
Moscow, 119234 Russia; Kazan, Russia

R. I. Gumerov

Kazan Federal University; Academy of Sciences of Tatarstan

Email: evgeny.nikolaeva@gmail.com
Kazan, 420000 Russia; Kazan, Russia

N. A. Sakhibullin

Kazan Federal University; Academy of Sciences of Tatarstan

Author for correspondence.
Email: evgeny.nikolaeva@gmail.com
Kazan, 420000 Russia; Kazan, Russia

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