The ultraluminous X-ray sources in the high-velocity system of NGC1275

Bibcode
2006MNRAS.367.1132G
DOI
10.1111/j.1365-2966.2006.10034.x
González-Martín, O.; Fabian, A. C.; Sanders, J. S.
Bibliographical reference

Monthly Notices of the Royal Astronomical Society, Volume 367, Issue 3, pp. 1132-1138.

Advertised on:
4
2006
Journal
Monthly Notices of the Royal Astronomical Society
Number of authors
3
IAC number of authors
0
Citations
5
Refereed citations
5
Description
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.
Type
Refereed
Galaxies

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