Metallicity vs. Be phenomenon relation in the solar neighborhood

被引：0
|
作者：
Levenhagen, R. S. [1 ]
Leister, N. V. [1 ]
Zorec, J. [2 ]
Fremat, Y. [3 ]
机构：
[1] Univ Sao Paulo, Inst Astron, Geofis Ciencias Atmosfer, Sao Paulo, Brazil
[2] Univ Paris 06, CNRS, Inst Astrophys Paris, UMR 7095, F-75252 Paris 05, France
[3] Royal Observ Belgium, Uccle, Belgium
来源：
ACTIVE OB-STARS: LABORATORIES FOR STELLAR AND CIRCUMSTELLAR PHYSICS, PROCEEDINGS | 2007年 / 361卷
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D O I：
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中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Fast rotation seems to be the mayor factor to trigger the Be phenornenon. Surface fast rotation can be favored by initial formation conditions, such as abundance of metals. We have observed 118 Be stars up to the apparent magnitudes V = 9 mag. Models of fast rotating atmospheres and evolutionary tracks were used to interpret the stellar spectra and to determine the stellar fundamental parameters. Since the studied stars are formed in regions that are separated enough to imply some non negligible gradient of galactic metallicity, we study the effects of possible incidence of this gradient on the nature as rotators of the studied stars.
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页码：457 / +
页数：2
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