文章基本信息

标题：Stellar population in star formation regions of galaxies
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作者：Alexander S. Gusev ; Elena V. Shimanovskaya ; Nikolai I. Shatsky 等
期刊名称：Open Astronomy
电子版ISSN：2543-6376
出版年度：2018
卷号：27
期号：1
页码：98-111
DOI：10.1515/astro-2018-0004
语种：English
出版社：Walter de Gruyter GmbH & Co. KG
摘要：Abstract We developed techniques for searching young unresolved star groupings (clusters, associations, and their complexes) and of estimating their physical parameters. Our study is based on spectroscopic, spectrophotometric, and UBVRI photometric observations of 19 spiral galaxies. In the studied galaxies, we found 1510 objects younger than 10 Myr and present their catalogue. Having combined photometric and spectroscopic data, we derived extinctions, chemical abundances, sizes, ages, and masses of these groupings. We discuss separately the specific cases, when the gas extinction does not agree with the interstellar one. We assume that this is due to spatial offset of Hii clouds with respect to the related stellar population.We developed a method to estimate age of stellar population of the studied complexes using their morphology and the relation with associated H emission region. In result we obtained the estimates of chemical abundances for 80, masses for 63, and ages for 57 young objects observed in seven galaxies.
关键词：Keywords H 11 regionsstar formationstar clustersphotometryspiral galaxies