文章基本信息

标题：Physical parameters of IPHAS-selected classical Be stars - I. Determination procedure and evaluation of the results
其他标题：I. Determination procedure and evaluation of the results⋆
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作者：L. Gkouvelis ; L. Gkouvelis ; J. Fabregat 等
期刊名称：Astronomy & Astrophysics
印刷版ISSN：0004-6361
电子版ISSN：1432-0746
出版年度：2016
卷号：591
页码：1-18
DOI：10.1051/0004-6361/201527090
语种：English
出版社：EDP Sciences
摘要：We present a semi-automatic procedure to obtain fundamental physical parameters and distances of classical Be (CBe) stars, based on the Barbier-Chalonge-Divan (BCD) spectrophotometric system. Our aim is to apply this procedure to a large sample of CBe stars detected by the IPHAS photometric survey, to determine their fundamental physical parameters and to explore their suitability as galactic structure tracers. In this paper we describe the methodology used and the validation of the procedure by comparing our results with those obtained from different independent astrophysical techniques for subsamples of stars in common with other studies. We also present a test case study of the galactic structure in the direction of the Perseus Galactic Arm, in order to compare our results with others recently obtained with different techniques and the same sample of stars. We did not find any significant clustering of stars at the expected positions of the Perseus and Outer Galactic Arms, in agreement with previous studies in the same area that we used for verification.
关键词：stars: early-type;stars: emission-line, Be;stars: fundamental parameters;stars: distances;Galaxy: structure;techniques: spectroscopic