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Why should we compare Wolf-Rayet codes?

Published online by Cambridge University Press:  25 May 2016

Orsola De Marco ,
Werner Schmutz ,
Lars Koesterke ,
Wolf-Rainer Hamann  and
Alex de Koter
Orsola De Marco
Affiliation:
Institute of Astronomy, Federal Institute of Technology, Zürich, Switzerland
Werner Schmutz
Affiliation:
Institute of Astronomy, Federal Institute of Technology, Zürich, Switzerland
Lars Koesterke
Affiliation:
Department of Physics, University of Potsdam, Germany
Wolf-Rainer Hamann
Affiliation:
Department of Physics, University of Potsdam, Germany
Alex de Koter
Affiliation:
Astronomical Institute Anton Pannekoek, University of Amsterdam, the Netherlands

Abstract

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We have modeled the spectrum of WR135 with a co-moving frame code and then used identical input parameters with a Sobolev-approximation code. Helium lines compare well in strength and shape, while carbon lines are found to be much stronger in the co-moving frame code. The reason for this discrepancy is being investigated. The present comparison shows that tests have to be extended to more complex atomic models and compatibility between different codes should not be taken yet for granted.

Type
Part 2. Models for single star evolution of massive stars: wind + atmosphere + interior
Information
Symposium - International Astronomical Union , Volume 193: Wolf-Rayet Phenomena in Massive Stars and Starburst Galaxies , 1999 , pp. 231 - 232
Copyright
Copyright © Astronomical Society of the Pacific 1999 

References

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Hamann, W.-R., Schmutz, W., Wessolowski, U. 1988, A&A 194, 190 Google Scholar