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Are the stellar winds in IC 1613 stronger than expected?

Published online by Cambridge University Press:  12 July 2011

Artemio Herrero ,
Maria Garcia ,
Katrien Uytterhoeven ,
Francisco Najarro ,
Daniel J. Lennon ,
Sergio Simón-Díaz ,
Norberto Castro ,
Joachim Puls ,
Jorick S. Vink  and
Miguel A. Urbaneja
...Show all authors
Artemio Herrero
Affiliation:
Instituto de Astrofísica de Canarias, E38200 La Laguna, Spain Departamento de Astrofísica, Universidad de La Laguna, E38205, La Laguna, Spain
Maria Garcia
Affiliation:
Instituto de Astrofísica de Canarias, E38200 La Laguna, Spain Departamento de Astrofísica, Universidad de La Laguna, E38205, La Laguna, Spain
Katrien Uytterhoeven
Affiliation:
CEA, Saclay, France
Francisco Najarro
Affiliation:
CAB (CSIC-INTA), Torrejón de Ardoz, Spain
Daniel J. Lennon
Affiliation:
STScI, Baltimore, USA
Sergio Simón-Díaz
Affiliation:
Instituto de Astrofísica de Canarias, E38200 La Laguna, Spain Departamento de Astrofísica, Universidad de La Laguna, E38205, La Laguna, Spain
Norberto Castro
Affiliation:
Instituto de Astrofísica de Canarias, E38200 La Laguna, Spain Departamento de Astrofísica, Universidad de La Laguna, E38205, La Laguna, Spain
Joachim Puls
Affiliation:
Univ.-Sternwarte Munich, Germany
Jorick S. Vink
Affiliation:
Armagh Observatory, Armagh, Northern Ireland
Miguel A. Urbaneja
Affiliation:
IfA, Hawaii, USA
Alex de Koter
Affiliation:
Astronomical Institut Anton Pannekoek, Amsterdam, The Netherlands Astronomical Institut, Utrecht, The Netherlands
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Abstract

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In this poster we present the results of our analyses of three early massive stars in IC 1613, whose spectra have been observed with VIMOS and analyzed with CMFGEN and FASTWIND. One of the targets resulted a possible LBV and the other two are Of stars with unexpectedly strong winds. The Of stars seem to be strongly contaminated by CNO products. Our preliminary results may represent a challenge for the theory of stellar atmospheres, but they still have to be confirmed by the analysis of more objects and a more complete coverage of the parameter space.

Keywords

stars: atmospheresstars: early-typestars: fundamental parametersstars: mass lossgalaxies: individual (IC 1613)
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 6 , Symposium S272: Active OB stars: structure, evolution, mass loss, and critical limits , July 2010 , pp. 292 - 293
Copyright
Copyright © International Astronomical Union 2011

References

Garcia, M., Herrero, A., Vicente, B., Castro, N. et al. 2009, A&A, 502, 1015Google Scholar
Herrero, A., Garcia, M., Uytterhoeven, K., Najarro, F. et al. 2010, A&A, 513A, 70Google Scholar
Mantegazza, L., Antonello, E., Fugazza, D., Covino, S. et al. 2002, A&A, 388, 861Google Scholar
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