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Open Astronomy

formerly Baltic Astronomy

Editor-in-Chief: Barbuy, Beatriz

IMPACT FACTOR 2018: 0.350

CiteScore 2018: 0.24

SCImago Journal Rank (SJR) 2018: 0.202
Source Normalized Impact per Paper (SNIP) 2018: 0.144

ICV 2017: 121.03

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Volume 24, Issue 4


Current Star Formation in the Outer Rings among Early-type Disk Galaxies

I. P. Kostiuk / O. K. Sil’chenko
  • Sternberg Astronomical Institute, M. V. Lomonosov Moscow State University, University av. 13, Moscow 119991, Russian Federation
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Published Online: 2017-02-18 | DOI: https://doi.org/10.1515/astro-2017-0245


We use ARRAKIS, the atlas of stellar rings in galaxies (Comerón et al. 2014), based on data of the S4G survey, to compile a list of early-type, S0-Sb, disk galaxies with outer stellar ring-like features (‘pure’ rings, R, or pseudorings, R′). We searched for current star formation signatures within these features through the NUV-maps of the galaxies provided by the ultraviolet space telescope GALEX. We found that current star formation, with the mean age of the young stellar population of less than 200 Myr, is present in about a half of all ‘pure’ rings; and within the pseudorings it is observed almost in all cases.

Keywords: galaxies: evolution; galaxies: structure; ultraviolet: galaxies


About the article

Received: 2015-11-02

Accepted: 2015-11-30

Published Online: 2017-02-18

Published in Print: 2015-12-01

Citation Information: Open Astronomy, Volume 24, Issue 4, Pages 426–430, ISSN (Online) 2543-6376, DOI: https://doi.org/10.1515/astro-2017-0245.

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© 2015 I. P. Kostiuk et al., published by De Gruyter Open. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

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