NLTE analysis of high-resolution spectra of CSPN

Bibcode
1990Ap&SS.169..183H
DOI
10.1007/BF00640708
Herrero, A.; Manchado, A.; Mendez, R. H.
Bibliographical reference

(IAU, European Regional Astronomy Meeting on New Windows to the Universe, 11th, La Laguna, Spain, July 3-8, 1989) Astrophysics and Space Science (ISSN 0004-640X), vol. 169, no. 1-2, July 1990, p. 183-188. Research supported by the Universitaet Muenchen and Instituto de Astrofisica de Canarias.

Advertised on:
7
1990
Number of authors
3
IAC number of authors
1
Citations
15
Refereed citations
14
Description
Preliminary results of new high-resolution and S/N ratio spectra of central stars of planetary nebulae (CSPN) are presented. The atmospheric parameters (Teff, log g, helium abundance) are derived using NLTE techniques. The results obtained confirm the conclusions of Mendez et al. (1988): (1) the distance scale of CSPN is greater than usually assumed; (2) as a consequence the luminosities of the CSPN agree with the predictions of evolutionary tracks, and (3) for a given temperature, the CSPN with strong winds are more massive than the others.
Type
Non-refereed
Planetary nebulae
Stellar evolution
Stellar atmospheres
Stellar winds

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