2024-03-29T09:29:44Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/2130112022-12-27T12:15:56Zcom_10261_37com_10261_4col_10261_290
A new, clean catalogue of extragalactic non-nuclear X-ray sources in nearby galaxies
Earnshaw, H. P.
Roberts, T. P.
Middleton, M.J.
Walton, D. J.
Mateos, Silvia
Science and Technology Facilities Council (UK)
National Aeronautics and Space Administration (US)
Ministerio de Economía y Competitividad (España)
European Commission
Black hole physics
Catalogues
X-rays: binaries
X-rays: general
We have created a new, clean catalogue of extragalactic non-nuclear X-ray sources by correlating the 3XMM-DR4 data release of the XMM-Newton Serendipitous Source Catalogue with the Third Reference Catalogue of Bright Galaxies and the Catalogue of Neighbouring Galaxies, using an improved version of the method presented in Walton et al. Our catalogue contains 1314 sources, of which 384 are candidate ultraluminous X-ray sources (ULXs). The resulting catalogue improves upon previous catalogues in its handling of spurious detections by taking into account XMM-Newton quality flags. We estimate the contamination of ULXs by background sources to be 24 per cent. We define a 'complete' subsample as those ULXs in galaxies for which the sensitivity limit is below 10 39 erg s -1 and use it to examine the hardness ratio properties between ULX and non-ULX sources, and ULXs in different classes of host galaxy. We find that ULXs have a similar hardness ratio distribution to lower luminosity sources, consistent with previous studies. We also find that ULXs in spiral and elliptical host galaxies have similar distributions to each other independent of host galaxy morphology, however, our results do support previous indications that the population of ULXs is more luminous in star-forming host galaxies than in non-star-forming galaxies. Our catalogue contains further interesting subpopulations for future study, including Eddington Threshold sources and highly variable ULXs. We also examine the highest luminosity (L X > 5 × 10 40 erg s -1) ULXs in our catalogue in search of intermediate-mass black hole candidates, and find nine new possible candidates.
2020-06-02T11:32:55Z
2020-06-02T11:32:55Z
2019
2020-06-02T11:32:55Z
actas de congreso
Monthly Notices of the Royal Astronomical Society 483(4): 5554-5573 (2019)
http://hdl.handle.net/10261/213011
10.1093/mnras/sty3403
http://dx.doi.org/10.13039/501100000271
http://dx.doi.org/10.13039/100000104
http://dx.doi.org/10.13039/501100003329
http://dx.doi.org/10.13039/501100000780
Publisher's version
https://doi.org/10.1093/mnras/sty3403
Sí
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/AYA2016-76730-P
openAccess
Oxford University Press