Spectral analysis and model atmospheres of WR type central stars
@article{Hamann1996SpectralAA, title={Spectral analysis and model atmospheres of WR type central stars}, author={W. R. Hamann}, journal={Astrophysics and Space Science}, year={1996}, volume={238}, pages={31-42} }
Wolf-Rayet type spectra of central stars are compared with spectra from Pop. I objects. Non-LTE models for expanding atmospheres are applied for analyzing these spectra quantitatively.
References
SHOWING 1-10 OF 11 REFERENCES
Line formation in expanding atmospheres: the treatment of radiative equilibrium by approximate lambda operators, and its application to Wolf-Rayet stars
- Physics
- 1990
Un modele d'atmosphere stellaire en expansion spherique, incluant l'equilibre radiatif et l'ecart ETL, est developpe. Une application aux etoiles WR est realisee
V 348 Sagittarii: analysis of the [WC 12] stellar spectrum
- Physics
- 1994
The Wolf-Rayet type spectrum of the highly variable V 348 Sgr, central star of a planetary nebula, is analyzed. An optical spectrum during maximum shows various emission and P-Cygni features, which…
The Sixth Catalogue of galactic Wolf-Rayet stars, their past and present
- Physics
- 1981
This paper presents the Sixth Catalogue of galactic Wolf-Rayet stars (Pop. I), a short history on the five earlier WR catalogues, improved spectral classification, finding charts, a discussion on…
Late stages of stellar evolution. II: Mass loss and the transition of asymptotic giant branch stars into hot remnants
- Physics
- 1983
We have computed the transition of asymptotic branch giants of 0.8 and 1.0 M/sub sun/ into remnants of 0.565, 0.553, and 0.546 M/sub sun/ by means of mass loss which removed the stellar envelopes in…
Discovery of a new cool WR star in a low excitation planetary nebula
- Physics
- 1990
La decouverte d'une nouvelle etoile WR froide, IRAS 17514-1555, lors d'un survey systematique de nebuleuses proto-planetaires, est presentee. Le spectre optique est analyse. IRAS 17514-1555 est…
Hydrostatic evolutionary sequences for the nuclei of planetary nebulae
- Physics
- 1986
Etude des proprietes des noyaux en fonction des trois parametres suivants: la masse du noyau, choisie egale a 0,60-0,70-0,76-0,89 MO; la phase de separation d'avec la branche asymptotique des…
An iterative method for the solution of the statistical and radiative equilibrium equations in expanding atmospheres
- Physics
- 1990
Une methode iterative pour resoudre l'equation du transfert radiatif en geometrie spherique et soumise aux contraintes de l'equilibre radiatif et statistique est presentee. Le schema iteratif utilise…