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The properties of single WO stars

Published online by Cambridge University Press:  23 January 2015

F. Tramper ,
S. M. Straal ,
G. Gräfener ,
L. Kaper ,
A. de Koter ,
N. Langer ,
H. Sana  and
J. S. Vink
F. Tramper
Affiliation:
Anton Pannekoek Institute for Astronomy, University of Amsterdam, PO Box 94249, 1090 GE Amsterdam, The Netherlands email: F.Tramper@uva.nl
S. M. Straal
Affiliation:
Anton Pannekoek Institute for Astronomy, University of Amsterdam, PO Box 94249, 1090 GE Amsterdam, The Netherlands email: F.Tramper@uva.nl
G. Gräfener
Affiliation:
Armagh Observatory, College Hill, BT61 9DG Armagh, Northern Ireland, UK
L. Kaper
Affiliation:
Anton Pannekoek Institute for Astronomy, University of Amsterdam, PO Box 94249, 1090 GE Amsterdam, The Netherlands email: F.Tramper@uva.nl
A. de Koter
Affiliation:
Anton Pannekoek Institute for Astronomy, University of Amsterdam, PO Box 94249, 1090 GE Amsterdam, The Netherlands email: F.Tramper@uva.nl Instituut voor Sterrenkunde, KU Leuven, Celestijnenlaan 200D, 3001 Leuven, Belgium
N. Langer
Affiliation:
Argelander Institut für Astronomie, University of Bonn, Auf dem Hügel 71, D-53121 Bonn, Germany
H. Sana
Affiliation:
ESA/Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
J. S. Vink
Affiliation:
Armagh Observatory, College Hill, BT61 9DG Armagh, Northern Ireland, UK
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Abstract

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The enigmatic oxygen sequence Wolf-Rayet (WO) stars represent a very late stage in massive star evolution, although their exact nature is still under debate. The spectra of most of the WO stars have never been analysed through detailed modelling with a non-local thermodynamic equilibrium expanding atmosphere code. Here we present preliminary results of the first homogeneous analysis of the (apparently) single WOs.

Keywords

stars: Wolf-Rayetstars: fundamental parametersstars: evolutionstars: individual (WR102, WR142, WR93b, BAT99-123, LH41-1042, DR1)stars: abundances
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. 144 - 145
Copyright
Copyright © International Astronomical Union 2015 

References

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