Optical observations of the hot post-asymptotic giant branch star, HD 177566.
Abstract
An LTE model atmosphere analysis of optical and ultra-violet spectra is presented for a hot high galactic latitude star, HD 177566, previously identified as a post-asymptotic giant branch candidate from its ultra-violet spectrum. The derived atmospheric parameters and chemical composition confirm that HD 177566 is a low mass (M=~0.55Msun_) post-AGB star; a general heavy element underabundance of approximately -1.3 dex is found. The possibility that it is the central star of a young, compact planetary nebula is briefly discussed.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- November 1994
- Bibcode:
- 1994A&A...291..851K
- Keywords:
-
- Asymptotic Giant Branch Stars;
- Atmospheric Models;
- Hot Stars;
- Stellar Atmospheres;
- Stellar Composition;
- Ultraviolet Spectra;
- Visible Spectrum;
- Abundance;
- Heavy Elements;
- Planetary Nebulae;
- Spectrum Analysis;
- Ultraviolet Astronomy;
- Astronomy;
- STARS: EARLY-TYPE;
- STARS: POST-ASYMPTOTIC GIANT BRANCH;
- STARS: ABUNDANCES