Photometric Variability of OB-type stars as a New Window on Massive Stars

被引：0

作者：

Kourniotis, M. ^{[1
,2
]}

Bonanos, A. Z. ^{[1
]}

Soszynski, I ^{[3
]}

Poleski, R. ^{[3
,4
]}

Krikelis, G. ^{[2
]}

机构：

[1] Natl Observ Athens, IAASARS, GR-15236 Penteli, Greece

[2] Univ Athens, Fac Phys, Sect Astrophys Astron & Mech, GR-15784 Athens, Greece

[3] Univ Warsaw Observ, PL-00478 Warsaw, Poland

[4] Ohio State Univ, Dept Astron, Columbus, OH 43210 USA

来源：

NEW WINDOWS ON MASSIVE STARS: ASTEROSEISMOLOGY, INTERFEROMETRY AND SPECTROPOLARIMETRY | 2014年 / 307卷

关键词：

stars: emission-line; Be; (stars:) binaries: eclipsing; galaxies: individual (SMC); stars: variables: other; B-STARS;

D O I：

10.1017/S1743921314006668

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 similar to 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.

引用

页码：171 / 175

页数：5

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