Contenidos
Imágenes
Subir su imagen
DSS Images Other Images
Artículos relacionados
Astrometric and astrophysical discontinuities between the galactic old disk and halo stellar populations
Intermediate band, RI, and DDO photometry of the weak-lined stars in thefirst three volumes of the Michigan catalogs of spectral type arediscussed on the basis of luminosity and heavy element abundance. Theinterface between the old disk (Fe/H greater than -0.8 dex) and halo(Fe/H less than -1.2 dex) populations represents discontinuities in boththe stellar motions and the stellar physics. The CN strengths of bothevolved and unevolved halo stars decrease with decreasing temperature,in a mirror image of the increase with decreasing temperature for thedisk objects. The result for the halo giants has been attributed to deepmixing in the stellar atmospheres but the similar result for unevolveddwarfs indicates a difference in formation rather than in evolutionaryprocess of the two populations.
|
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: | Pez Volador |
| Ascensión Recta: | 08h24m52.85s |
| Declinación: | -66°47'16.6" |
| Magnitud Aparente: | 9.173 |
| Movimiento Propio en Ascensión Recta: | 27.2 |
| Movimiento Propio en Declinación: | 17 |
| B-T magnitude: | 10.379 |
| V-T magnitude: | 9.273 |
Catálogos y designaciones:
|
