Contenidos
Imágenes
Subir su imagen
DSS Images Other Images
Artículos relacionados
The early A type stars - Refined MK classification, confrontation with Stroemgren photometry, and the effects of rotation
The MK classification system for the early A-type stars is refined, anda parallel system of standards for the broad-lined stars is introduced.With this improved system, stars may be classified with significantlygreater precision than before. It is shown that spectral types in thissystem are not systematically affected by rotational line broadening. Atotal of 372 early A-type stars are classified, and a confrontation ofthese spectral types with Stroemgren photometry reveals a number ofsystematic photometric effects of rotation. In particular, high v sin istars are systematically redder than low v sin i stars of the samespectral type, and the beta index is weakened by rotation. It isconcluded that precise spectral classification in conjunction withStroemgren and H-beta photometry can potentially provide a valuablecheck and input to the theory of the atmospheres of rotating stars.
|
Enviar un nuevo artículo
Enlaces relacionados
- - No se han encontrado enlaces -
En viar un nuevo enlace
Miembro de los siguientes grupos:
|
Datos observacionales y astrométricos
| Constelación: | Vela |
| Ascensión Recta: | 08h32m09.06s |
| Declinación: | -39°57'10.7" |
| Magnitud Aparente: | 7.331 |
| Distancia: | 209.205 parsecs |
| Movimiento Propio en Ascensión Recta: | -19.2 |
| Movimiento Propio en Declinación: | 13.5 |
| B-T magnitude: | 7.318 |
| V-T magnitude: | 7.33 |
Catálogos y designaciones:
|
