NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-05-20 T10:02:54 PDT
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For refcode 2005A&A...429.1125L:
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NED Abstract

Copyright by European Southern Observatory (ESO). Reproduced by permission
2005A&A...429.1125L A catalogue of ultraluminous X-ray sources in external galaxies Q. Z. Liu and I. F. Mirabel Received 23 August 2004 / Accepted 7 September 2004 We present a catalogue of ultraluminous X-ray sources (ULXs) in external galaxies. The aim of this catalogue is to provide easy access to the properties of ULXs, their possible counterparts at other wavelengths (optical, IR, and radio), and their host galaxies. The catalogue contains 229 ULXs reported in the literature until April 2004. Most ULXs are stellar-mass-black hole X-ray binaries, but it is not excluded that some ULXs could be intermediate-mass black holes. A small fraction of the candidate ULXs may be background Active Galactic Nuclei (AGN) and Supernova Remnants (SNRs). ULXs with luminosity above 10^40^ ergs s^-1^ are found in both starburst galaxies and in the halos of early-type galaxies. Keywords: X-rays: galaxies, X-rays: binaries, galaxies: general, catalogs
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