INVESTIGADORES
ALBACETE COLOMBO Juan Facundo
artículos
Título:
X-rays and Winds in Massive Stars of Cygnus OB2
Autor/es:
ALBACETE-COLOMBO, J. F.; MICELA, G.; FLACCOMIO, E.; SCIORTINO, S.
Revista:
ASP Conf. Series
Editorial:
Edited by Alex de Koter, Linda J. Smith, and Laurens B. F. M. Waters. San Francisco: Astronomical Society of the Pacific, 2008.
Referencias:
Lugar: Lunteren, The Netherlands; Año: 2008 p. 139 - 142
ISSN:
1080-7926
Resumen:
The X-ray properties and stellar-wind parameters of 26 OB type stars of the Cyg OB2 region are examined. Absorption corrected X-ray luminosities (Lx) were calculated fitting our data with thermal emission models. log(Lx)-log(Lbol) plane was constructed. Main-sequence (MS) stars are widely dispersed around the relation log(Lx/Lbol) =-7(±1), while evolved ones (luminosity classes I, and III) tends to follow a power-law dependence: log Lx=1.79(±0.29) log Lbol - 38.2(±11.7). We also test the correlation between Lx and the modified wind momentum W=mdot.R^1/2 for all OB stars of the region.
