Hostname: page-component-586b7cd67f-t8hqh Total loading time: 0 Render date: 2024-11-25T18:42:21.221Z Has data issue: false hasContentIssue false
  • English
  • Français

CNO Abundances in Magellanic Cloud OB Supergiants

Published online by Cambridge University Press:  26 May 2016

Paul A. Crowther  and
Christopher J. Evans
Paul A. Crowther
Affiliation:
Department of Physics & Astronomy, UCL, Gower Street, London WC1E 6BT, UK
Christopher J. Evans
Affiliation:
The Isaac Newton Group of Telescopes, Apartado de Correos 321, 38700, Santa Cruz de La Palma, Canary Is., Spain

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.

We present CNO abundance determinations in 11 Magellanic Cloud O and early B supergiants based on physical parameters obtained from FUSE, HST/IUE and VLT spectroscopy, plus model atmospheres which allow for stellar winds and line blanketing. In all cases, nitrogen is substantially enhanced whilst carbon and generally oxygen are moderately depleted, indicative of rotationally induced mixing of unprocessed and CNO processed material at their stellar surfaces.

Type
Session 2 Rotation in Relation with Abundances and Magnetic Fields
Information
Symposium - International Astronomical Union , Volume 215: Stellar Rotation , 2004 , pp. 218 - 219
Copyright
Copyright © Astronomical Society of the Pacific 2004 

References

Crowther, P.A., Hillier, D.J., Evans, C.J. et al. 2002, ApJ 579, 774 CrossRefGoogle Scholar
Evans, C.J., Crowther, P.A., Fullerton, A.W., Hillier, D.J., 2003, MNRAS 588, 1039 Google Scholar
Hillier, D.J., Miller, D.L., 1998, ApJ, 496, 407 CrossRefGoogle Scholar
Hillier, D.J., Lanz, T. Heap, S.R. et al. 2003, ApJ in press Google Scholar
Lennon, D.J., Becker, S. T., Butler, K. et al. 1991, A& 252, 498 Google Scholar
Russell, S.C., Dopita, M.A, 1992, ApJ 384, 508 CrossRefGoogle Scholar
Venn, K., 1999, ApJ 518, 405 CrossRefGoogle Scholar