The Ultra Luminous X-ray sources in the High Velocity System of NGC 1275

Details The Ultra Luminous X-ray sources in the High Velocity System of NGC 1275 The Ultra Luminous X-ray sources in the High Velocity System of NGC 1275

2006-01-09

arxiv.org/abs/astro-ph/0601180v1

Mon.Not.Roy.Astron.Soc.367:1132-1138,2006

Astronomy and Astrophysics

Astrophysics

7 pages, 4 figures, accepted by MNRAS

Scientific paper

10.1111/j.1365-2966.2006.10034.x

We report the results of a study of X-ray point sources coincident with the High Velocity System (HVS) projected in front of NGC 1275. A very deep X-ray image of the core of the Perseus cluster made with the Chandra Observatory has been used. We find a population of Ultra-Luminous X-ray sources (ULX; 7 sources with LX [0.5-7 keV] > 7x10^39 erg/s). 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 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.

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