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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 26, Issue 1


Detection of stellar oscillations in HWVir

Andrzej S. Baran
  • Corresponding author
  • Uniwersytet Pedagogiczny, Obserwatorium na Suhorze, ul. Podchora¸żych 2, 30-084 Kraków, Poland
  • Department of Physics, Astronomy, and Materials Science, Missouri State University, Springfield, MO 65897, United States of America
  • Email
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Roy H. Østensen
  • Department of Physics, Astronomy, and Materials Science, Missouri State University, Springfield, MO 65897, United States of America
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ John H. Telting
Published Online: 2017-12-29 | DOI: https://doi.org/10.1515/astro-2017-0437


We present our analysis of K2 observations of the binary system, HWVir. We processed the raw Kepler data and used Fourier analysis to search for periodic signals that could be associated with pulsations. We detect the binary frequency and its harmonic and discovered tens of peaks at both low and high frequencies. We interpreted those to be caused by stellar pulsations. Our discovery means we can apply the tools of asteroseismology to the HWVir system.

Keywords : subdwarfs; stars: oscillations (including pulsations)


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About the article

Received: 2017-10-14

Accepted: 2017-11-03

Published Online: 2017-12-29

Published in Print: 2016-08-01

Citation Information: Open Astronomy, Volume 26, Issue 1, Pages 199–201, ISSN (Online) 2543-6376, DOI: https://doi.org/10.1515/astro-2017-0437.

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© 2018. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License. BY-NC-ND 4.0

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