Understanding A-type supergiants - I. Ultraviolet and visible spectral atlas of A-type supergiants
This paper is the first of a series whose aim is to perform a systematic study of A-type supergiant atmospheres and winds. Here we present a spectral atlas of 41 A-supergiants observed by us in high and medium resolution in the visible asd ultraviolet. The atlas consists of profiles of the H alpha,...
| Autores: | , , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 1999 |
| País: | España |
| Institución: | Universidad Complutense de Madrid (UCM) |
| Repositorio: | Docta Complutense |
| Idioma: | inglés |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/57548 |
| Acceso en línea: | https://hdl.handle.net/20.500.14352/57548 |
| Access Level: | acceso abierto |
| Palabra clave: | 52 Terminal velocities Stellar winds Super-giants Milky-way Mass-loss Stars Spectrograph Associations Photometry Galaxy Atlases Line: profiles Stars: supergiants Ultraviolet: stars Astronomía (Matemáticas) 21 Astronomía y Astrofísica |
| Sumario: | This paper is the first of a series whose aim is to perform a systematic study of A-type supergiant atmospheres and winds. Here we present a spectral atlas of 41 A-supergiants observed by us in high and medium resolution in the visible asd ultraviolet. The atlas consists of profiles of the H alpha, H beta, H gamma, H delta, H epsilon, Ca II (H and K), Na I (D1 and D2), Mg II4481, Mg II [uv1] and Fe II [uv1, uv2; uv3, uv62, uv63, uv161] lines for 41 stars with spectral types ranging from B9 to A9 and luminosity classes Ia, Iab and Ib, and provides the basic data for a thoughtful study of these stars. The overall characteristics of the sample as well as the data reduction procedures are described. We also present some examples of spectral variability. |
|---|