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Hα19 in the galaxy M 33, a high-luminosity massive merging eclipsing binary

Published online by Cambridge University Press:  12 July 2011

Vitaly P. Goranskij  and
Elena Bersukova
Vitaly P. Goranskij
Affiliation:
Sternberg Astronomical Institute, Moscow University, Universitetskii pr. 13, Moscow, 119991, Russia email: goray@sai.msu.ru
Elena Bersukova
Affiliation:
Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnij Arkhyz, Karachai-Cherkesia, 369167, Russia email: bars@sao.ru
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Abstract

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CCD photometry reveals a hot spot on the surface of the hot accretion gainer in this supergiant O type binary with a big accretion rate. This spot is as bright as 25000 Suns. The orbital period of this system is 33.108 days. The absorption-line spectrum contains multiple lines of He I, Si III and N II. The star is associated with H II region formed by bipolar gas outflow from the system.

Keywords

binaries: eclipsingcircumstellar matter
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 6 , Symposium S272: Active OB stars: structure, evolution, mass loss, and critical limits , July 2010 , pp. 610 - 611
Copyright
Copyright © International Astronomical Union 2011

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