Contenidos
Imágenes
Subir su imagen
DSS Images Other Images
Artículos relacionados
X-ray properties of hot stars. I - On a dichotomy among O-type stars X-ray data gathered by the Einstein Observatory are discussed in termsof the origins of the emissions from O type stars. The sampling islimited to a radius of about 2.5 kpc and energies of 0.2-4 keV.Bolometric (Lb) and X-ray (Lx) luminosities of 47 objects are listed.All slow stars in the sample are found to have an Lx/Lb ratio of morethan 0.00000016. Runaway stars are determined to have a smaller Lx valueand are not found in dense, bright nebulae. The data are used to set alimit of 10 to the 14th cm for the maximum size of an X-ray emittingregion. It is suggested that runaway O-type stars escape from dense,bright nebulae, where they are formed. Interstellar shocks appear whenthe interstellar medium encounters the dense nebular wind and emit theobserved X-rays.
|
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: | Hércules |
Ascensión Recta: | 17h09m51.44s |
Declinación: | +15°32'09.9" |
Magnitud Aparente: | 10.727 |
Movimiento Propio en Ascensión Recta: | 15.8 |
Movimiento Propio en Declinación: | 35.4 |
B-T magnitude: | 11.853 |
V-T magnitude: | 10.82 |
Catálogos y designaciones:
|