WS1: one more new Galactic bona fide luminous blue variable

Kniazev, A.Y.; Gvaramadze, V.V.; Berdnikov, L.N.

Статья опубликована в высокорейтинговом журнале

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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 1 мая 2015 г.

Авторы: Kniazev A.Y., Gvaramadze V.V., Berdnikov L.N.
Журнал: Monthly Notices of the Royal Astronomical Society
Том: 449
Номер: 1
Год издания: 2015
Издательство: Oxford Journals, Oxford University Press
Местоположение издательства: Oxford, UK, England
Первая страница: L60
Последняя страница: L64
DOI: 10.1093/mnrasl/slv023
Аннотация: In this Letter, we report the results of spectroscopic and photometric monitoring of the candidate luminous blue variable (LBV) WS1, which was discovered in 2011 through the detection of a mid-infrared circular shell and follow-up optical spectroscopy of its central star. Our monitoring showed that WS1 brightened in the B, V and I bands by more than 1 mag during the last three years, while its spectrum revealed dramatic changes during the same time period, indicating that the star became much cooler. The light curve of WS1 demonstrates that the brightness of this star has reached maximum in 2013 December and then starts to decline. These findings unambiguously proved the LBV nature of WS1 and added one more member to the class of Galactic bona fide LBVs, bringing their number to sixteen (an updated census of these objects is provided).
Добавил в систему: Гварамадзе Василий Васильевич

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WS1: one more new Galactic bona fide luminous blue variableстатья

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