Non-LTE abundances in ob stars: Preliminary results for 5 stars in the outer galactic disk

G. A. Bragançca, T. Lanz, S. Daflon, K. Cunha, C. D. Garmany, J. W. Glaspey, M. Borges Fernandes, M. S. Oey, T. Bensby, I. Hubeny

Research output: Contribution to journalArticle

Abstract

The aim of this study is to analyse and determine elemental abundances for a large sample of distant B stars in the outer Galactic disk in order to constrain the chemical distribution of the Galactic disk and models of chemical evolution of the Galaxy. Here, we present preliminary results on a few stars along with the adopted methodology based on securing simultaneous O and Si ionization equilibria with consistent NLTE model atmospheres.

Original languageEnglish (US)
Pages (from-to)90-91
Number of pages2
JournalProceedings of the International Astronomical Union
Volume9
DOIs
StatePublished - Jan 1 2014

Keywords

  • Galaxy: abundances
  • Galaxy: disk
  • Galaxy: evolution
  • early-type
  • stars: abundances
  • stars: fundamental parameters

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Astronomy and Astrophysics
  • Nutrition and Dietetics
  • Public Health, Environmental and Occupational Health
  • Space and Planetary Science

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    Bragançca, G. A., Lanz, T., Daflon, S., Cunha, K., Garmany, C. D., Glaspey, J. W., Borges Fernandes, M., Oey, M. S., Bensby, T., & Hubeny, I. (2014). Non-LTE abundances in ob stars: Preliminary results for 5 stars in the outer galactic disk. Proceedings of the International Astronomical Union, 9, 90-91. https://doi.org/10.1017/S1743921314006334