Photometric Variability of OB-type stars as a New Window on Massive Stars. Issue Volume 9:Issue S307(2014) (23rd January 2015)

• Record Type: Journal Article
• Authors: Kourniotis, M.; Bonanos, A. Z.; Soszyński, I.; Poleski, R.; Krikelis, G.
• Editors: Meynet, Georges; Georgy, Cyril; Groh, José; Stee, Philippe
• Is Part Of: Proceedings of the International Astronomical Union. Volume 9:Issue S307(2014)
• Page Start: 171
• Page End: 175
• Publication Date: 2015-01-23
• Subjects: stars: emission-line, -- Be, -- (stars:) binaries: eclipsing, -- galaxies: individual (SMC), -- stars: variables: other; Astronomy -- Congresses; Astronomy -- Periodicals; 520
• DOI: 10.1017/S1743921314006668
• Languages: English
• ISSNs: 1743-9213

Abstract

Abstract: We present the first systematic study of 4646 spectroscopically confirmed early-type massive stars in the Small Magellanic Cloud (SMC), using variability as a tool to confine the physics of OB-type massive stars. We report the discovery of ∼100 massive eclipsing systems which are useful for the accurate determination of the fundamental parameters of massive stars and we evaluate the frequency of multiplicity. In addition, we explore the occurrence of the Oe/Be phenomenon and provide a large number of candidate non-radial pulsators, which can be further studied via asteroseismology. The results of this work (Kourniotis et al .2014 ) will contribute to a better understanding of the role of metallicity in triggering processes associated to matter ejections and/or disk formation, which in turn affect mass loss and stellar rotation.