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Open Astronomy

formerly Baltic Astronomy

Editor-in-Chief: Barbuy, Beatriz


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Volume 27, Issue 1

Issues

Stellar population in star formation regions of galaxies

Alexander S. Gusev
  • Corresponding author
  • Sternberg Astronomical Institute, Lomonosov Moscow State University, Universitetsky pr. 13, 119992 Moscow, Russian Federation
  • Email
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Elena V. Shimanovskaya
  • Sternberg Astronomical Institute, Lomonosov Moscow State University, Universitetsky pr. 13, 119992 Moscow, Russian Federation
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Nikolai I. Shatsky
  • Sternberg Astronomical Institute, Lomonosov Moscow State University, Universitetsky pr. 13, 119992 Moscow, Russian Federation
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Firouz Sakhibov
  • University of Applied Sciences of Mittelhessen, Campus Friedberg, Department of Mathematics, Natural Sciences and Data Processing, Wilhelm-Leuschner-Strasse 13, 61169 Friedberg, Germany
  • Other articles by this author:
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/ Anatoly E. Piskunov
  • Institute of Astronomy, Russian Academy of Sciences, ul. Pyatnitskaya 48, 119017 Moscow, Russian Federation
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  • De Gruyter OnlineGoogle Scholar
/ Nina V. Kharchenko
  • Main Astronomical Observatory, National Academy of Sciences of Ukraine, ul. Zabolotnogo 27, 03680 Kiev, Ukraine
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
Published Online: 2018-05-31 | DOI: https://doi.org/10.1515/astro-2018-0004

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.

Keywords : H 11 regions; star formation; star clusters; photometry; spiral galaxies

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About the article

Received: 2017-11-16

Accepted: 2002-02-06

Published Online: 2018-05-31


Citation Information: Open Astronomy, Volume 27, Issue 1, Pages 98–111, ISSN (Online) 2543-6376, DOI: https://doi.org/10.1515/astro-2018-0004.

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© 2018 Alexander S. Gusev, published by De Gruyter. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License. BY-NC-ND 4.0

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