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Metal abundances in the Galactic Center

Published online by Cambridge University Press:  25 May 2016

Francisco Najarro De La Parra ,
D. John Hillier  and
Donald F. Figer
Francisco Najarro De La Parra
Affiliation:
Instituto de Estructura de la Materia, CSIC, Serrano 121, 28006 Madrid, Spain
D. John Hillier
Affiliation:
Department of Physics and Astronomy, University of Pittsburgh, 3941 O'Hara Street, Pittsburgh, PA 15260, USA
Donald F. Figer
Affiliation:
Department of Physics & Astronomy, University of California, Los Angeles, CA 90095–1562, USA

Abstract

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Recent progress in model atmospheres for hot stars is presented. The impact of nlte wind-blanketed models is shown by comparison with the ‘old’ standard model. In order to confindently use the IR-spectra of objects at the Galactic Center (with high extinction) to derive their physical properties and trace the metal content, the consistency between results from optical and IR analysis is checked in a calibration study using the B1.5Ia+ star HDE 316285. With the above consistency proved, we started a detail investigation of the Pistol Star. Preliminary results are presented.

Type
Part 4. Wolf-Rayet stars and other hot massive stars in the Galactic Center and in Local Group giant H II regions (individual stars)
Information
Symposium - International Astronomical Union , Volume 193: Wolf-Rayet Phenomena in Massive Stars and Starburst Galaxies , 1999 , pp. 491 - 492
Copyright
Copyright © Astronomical Society of the Pacific 1999 

References

Figer, D.F., Najarro, F., Morris, M., McLean, I.S., Geballe, T.R., Ghez, A.M., Langer, N. 1998, ApJ 384, 404 Google Scholar
Hillier, D.J., Crowther, P.A., Najarro, F., Fullerton, A.W. 1998, A&A 340, 483 Google Scholar