A non-LTE analysis of the spectra of two narrow lined main sequence stars in the SMC

I. Hunter, P. L. Dufton, R. S.I. Ryans, D. J. Lennon, W. R.J. Rolleston, I. Hubeny, T. Lanz

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Abstract

An analysis of high-resolution VLT/UVES spectra of two B-type main sequence stars, NGC 346-11 and AV 304, in the Small Magellanic Cloud (SMC), has been undertaken, using the non-LTE TLUSTY model atmospheres to derive the stellar parameters and chemical compositions of each star. The chemical compositions of the two stars are in reasonable agreement. Moreover, our stellar analysis agrees well with earlier analyses of H II regions. The results derived here should be representative of the current base-line chemical composition of the SMC interstellar medium as derived from B-type stars.

Original languageEnglish (US)
Pages (from-to)687-695
Number of pages9
JournalAstronomy and astrophysics
Volume436
Issue number2
DOIs
StatePublished - Jun 1 2005

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Keywords

  • Galaxies: individual: Small Magellanic Cloud
  • Stars: abundances
  • Stars: atmospheres
  • Stars: early-type

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Hunter, I., Dufton, P. L., Ryans, R. S. I., Lennon, D. J., Rolleston, W. R. J., Hubeny, I., & Lanz, T. (2005). A non-LTE analysis of the spectra of two narrow lined main sequence stars in the SMC. Astronomy and astrophysics, 436(2), 687-695. https://doi.org/10.1051/0004-6361:20042290