Bibcode
González-Martín, O.; Fabian, A. C.; Sanders, J. S.
Referencia bibliográfica
Monthly Notices of the Royal Astronomical Society, Volume 367, Issue 3, pp. 1132-1138.
Fecha de publicación:
4
2006
Número de citas
5
Número de citas referidas
5
Descripción
We report the results of a study of X-ray point sources coincident with
the high-velocity system (HVS) projected in front of NGC1275. A very
deep X-ray image of the core of the Perseus cluster, made with the
Chandra X-ray Observatory, has been used. We find a population of
ultraluminous X-ray sources [ULXs seven sources with LX(0.5 -
7.0 keV) > 7 × 1039ergs-1]. As with the
ULX populations in the Antennae and Cartwheel galaxies, those in the HVS
are associated with a region of very active star formation. Several
sources have possible optical counterparts found on the Hubble Space
Telescope (HST) images, although the X-ray brightest one does not.
Absorbed power-law models fit the X-ray spectra, with most having a
photon index between 2 and 3.