Hostname: page-component-cd9895bd7-p9bg8 Total loading time: 0 Render date: 2024-12-25T04:29:45.555Z Has data issue: false hasContentIssue false
  • English
  • Français

Chemical abundances of fast-rotating OB stars

Published online by Cambridge University Press:  23 January 2015

Constantin Cazorla ,
Thierry Morel ,
Yaël Nazé  and
Gregor Rauw
Constantin Cazorla
Affiliation:
Institut d'astrophysique, géophysique et océanographie, University of Liège, Belgium email: [email protected]
Thierry Morel
Affiliation:
Institut d'astrophysique, géophysique et océanographie, University of Liège, Belgium email: [email protected]
Yaël Nazé
Affiliation:
Institut d'astrophysique, géophysique et océanographie, University of Liège, Belgium email: [email protected]
Gregor Rauw
Affiliation:
Institut d'astrophysique, géophysique et océanographie, University of Liège, Belgium email: [email protected]
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Fast rotation in massive stars is predicted to induce mixing in their interior, but a population of fast-rotating stars with normal nitrogen abundances at their surface has recently been revealed (Hunter et al.2009; Brott et al.2011, but see Maeder et al.2014). However, as the binary fraction of these stars is unknown, no definitive statements about the ability of single-star evolutionary models including rotation to reproduce these observations can be made. Our work combines for the first time a detailed surface abundance analysis with a radial-velocity monitoring for a sample of bright, fast-rotating Galactic OB stars to put strong constraints on stellar evolutionary and interior models.

Keywords

stars: abundancesstars: fundamental parametersstars: rotation
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Issue S307: New windows on massive stars: asteroseismology, interferometry, and spectropolarimetry , June 2014 , pp. 94 - 95
Copyright
Copyright © International Astronomical Union 2015 

References

Brott, I., Evans, C. J., Hunter, I., et al. 2011, A&A 530, A116Google Scholar
Georgy, C., Ekström, S., Granada, A., et al. 2013, A&A 553, A24Google Scholar
Hunter, I., Brott, I., Langer, N., et al. 2009, A&A 496, 841Google Scholar
Maeder, A., Przybilla, N., Nieva, M.-F., et al. 2014, A&A 565, A39Google Scholar
Rauw, G., Morel, T., & Palate, M. 2012, A&A 546, A77Google Scholar
Ritchie, B. W., Stroud, V. E., Evans, C. J., et al. 2012, A&A 537, A29Google Scholar