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Spectroscopy and photometry of V490 Cep (Cep X-4) in June 2023 X-ray outburstстатья
- Авторы: Goranskij V.P., Barsukova E.A., Vinokurov A.S., Sarkisyan A.N., Dedov E.O.
- Журнал: The Astronomer’s Telegram
- Номер: 16189
- Год издания: 2023
- Первая страница: 1
- Последняя страница: 1
- Аннотация: The recent X-ray outburst of Be/X-ray binary pulsar Cep X-4 (Ginga 2138+56) was observed by several observatories at once (ATel#16088,#16171). The outburst started around 2023 May 26 and finished around July 9, the flux maximum was reached on June 8. The source is an X-ray pulsar with a donor B1.5Ve star and is associated with a variable star V490 Cep. We carried out spectral observations and direct imaging of this star at the decay of the X-ray outburst using the Russian 6 m telescope BTA with the multimode focal reducer SCORPIO-2.
- Добавил в систему: Горанский Виталий Петрович