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Time-resolved spectroscopy of the sdBV V338 Serpentis

Astrophysics and Space Science volume 329, pages 167–174 (2010)Cite this article

Abstract

We obtained 1955 high-resolution spectra of the high-amplitude pulsating subdwarf B star V338 Ser with the FIES spectrograph at the 2.5 m Nordic Optical Telescope covering 4 full nights in May–June 2009. Here we present the first results from phase-folding the data on the main pulsation mode, as revealed by simultaneous B-band photometry obtained with the Mercator 1.25 m and Baker 0.4 m telescopes. We compare the results with a sample line-profile model produced with LTE atmospheres and bruce+kylie.

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Authors and Affiliations

  1. Instituut voor Sterrenkunde, K.U. Leuven, 3001, Leuven, Belgium

    R. H. Østensen, R. Oreiro & E. De Beck

  2. Nordic Optical Telescope, Apartado 474, 38710, Santa Cruz de La Palma, Spain

    J. H. Telting

  3. Dr. Remeis Sternwarte, Univ. Erlangen-Nürnberg, 96049, Bamberg, Germany

    U. Heber

  4. Missouri State University, Springfield, MO, 65804, USA

    M. Reed

Authors
  1. R. H. Østensen
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  2. J. H. Telting
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  3. R. Oreiro
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  4. U. Heber
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  5. E. De Beck
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  6. M. Reed
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Correspondence to R. H. Østensen.

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Østensen, R.H., Telting, J.H., Oreiro, R. et al. Time-resolved spectroscopy of the sdBV V338 Serpentis. Astrophys Space Sci 329, 167–174 (2010). https://doi.org/10.1007/s10509-010-0287-0

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  • DOI: https://doi.org/10.1007/s10509-010-0287-0

Keywords

  • Subdwarfs
  • Pulsators
  • Line-profile variations