Article (Scientific journals)
The most massive star of the largest H II region in the Small Magellanic Cloud
Heydari-Malayeri, M.; Hutsemekers, Damien
1991In Astronomy and Astrophysics, 243, p. 401-404
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Keywords :
H II REGIONS; MAGELLANIC CLOUDS; OPEN CLUSTERS; STELLAR MASS; STELLAR SYSTEMS; CHARGE COUPLED DEVICES; STELLAR LUMINOSITY; STELLAR SPECTROPHOTOMETRY
Abstract :
[en] It is shown that the brightest star in the most important H II region of the Small Magellanic Cloud (SMC) is a multiple system. The zero-age main sequence mass of this star drops significantly from the previously estimated value of 130 or 110 solar masses to less than 85 solar masses, while its present mass falls from 113 to 58 solar masses, both due to multiplicity and extinction correction. This is another piece of evidence against the existence of stars more massive than about 100 solar masses in the SMC. It is also shown that the present mass of one of the two known O3 stars in the SMC is significantly smaller than presently believed.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Heydari-Malayeri, M.;  European Southern Observatory, Garching, Federal Republic of Germany
Hutsemekers, Damien ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Language :
English
Title :
The most massive star of the largest H II region in the Small Magellanic Cloud
Publication date :
01 March 1991
Journal title :
Astronomy and Astrophysics
ISSN :
0004-6361
eISSN :
1432-0746
Publisher :
EDP Sciences, Les Ulis, France
Volume :
243
Pages :
401-404
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 09 March 2010

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