SIT vidicon and IDS spectra of central stars of planetary nebulae

SIT vidicon and IDS spectra of central stars of planetary nebulae

Monochromatic blue magnitudes, spectral descriptions and non-LTE model atmosphere analyses of several central stars of planetary nebulae (CSPN) are presented. The analyses yield the T(eff), log g, and He abundances in the atmospheres of these stars. New examples of H-deficient central stars have bee...

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Veröffentlicht in:Astronomy and astrophysics (Berlin) 1985, Vol.142 (2), p.289-296
Hauptverfasser: MENDEZ, R. H, KUDRITZKI, R. P, SIMON, K. P
Format: Artikel
Sprache:eng
Schlagworte:
Astronomy
Earth, ocean, space
Exact sciences and technology
Stars
Stellar atmospheres (photospheres, chromospheres, coronae, magnetospheres). Radiative transfer. Opacity and line formation
Stellar characteristics and properties
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Zusammenfassung:Monochromatic blue magnitudes, spectral descriptions and non-LTE model atmosphere analyses of several central stars of planetary nebulae (CSPN) are presented. The analyses yield the T(eff), log g, and He abundances in the atmospheres of these stars. New examples of H-deficient central stars have been found: K 1-27, Longmore 3 and Longmore 4. The observed positions of 12 CSPN on the log g-log T(eff) diagram are compared with theoretical post-AGB evolutionary tracks.
ISSN:0004-6361
1432-0746