dc.contributor.author Walton, D. J. dc.contributor.author Mackenzie, A. D. A. dc.contributor.author Gully, H. dc.contributor.author Patel, N. R. dc.contributor.author Roberts, T. P. dc.contributor.author Earnshaw, H. P. dc.contributor.author Mateos, S. dc.date.accessioned 2021-12-13T15:45:02Z dc.date.available 2021-12-13T15:45:02Z dc.date.issued 2022-01-01 dc.identifier.citation Walton , D J , Mackenzie , A D A , Gully , H , Patel , N R , Roberts , T P , Earnshaw , H P & Mateos , S 2022 , ' A Multi-Mission Catalogue of Ultraluminous X-ray Source Candidates ' , Monthly Notices of the Royal Astronomical Society , vol. 509 , no. 2 , pp. 1587–1604 . https://doi.org/10.1093/mnras/stab3001 dc.identifier.issn 0035-8711 dc.identifier.other PURE: 26456165 dc.identifier.other PURE UUID: 492ae9d7-768a-4e4b-aeb2-0f8842e98520 dc.identifier.other ArXiv: http://arxiv.org/abs/2110.07625v1 dc.identifier.other Scopus: 85121242661 dc.identifier.uri http://hdl.handle.net/2299/25255 dc.description © 2021 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society. This article has been accepted for publication in the Monthly Notices of the Royal Astronomical Society, which has been published in final form at https://doi.org/10.1093/mnras/stab3001. dc.description.abstract We present a new, multi-mission catalogue of ultraluminous X-ray source (ULX) candidates, based on recent data releases from each of the XMM-Newton, Swift and Chandra observatories (the 4XMM-DR10, 2SXPS and CSC2 catalogues, respectively). This has been compiled by cross-correlating each of these X-ray archives with a large sample of galaxies primarily drawn from the HyperLEDA archive. Significant efforts have been made to clean the sample of known non-ULX contaminants (e.g. foreground stars, background AGN, supernovae), and also to identify ULX candidates that are common to the different X-ray catalogues utilized, allowing us to produce a combined 'master' list of unique sources. Our sample contains 1843 ULX candidates associated with 951 different host galaxies, making it the largest ULX catalogue compiled to date. Of these, 689 sources are catalogued as ULX candidates for the first time. Our primary motivation is to identify new sources of interest for detailed follow-up studies, and within our catalogue we have already found one new extreme ULX candidate that has high S/N data in the archive: NGC 3044 ULX1. This source has a peak luminosity of $L_{\rm{X,peak}} \sim 10^{40}$ erg s$^{-1}$, and the XMM-Newton spectrum of the source while at this peak flux is very similar to other, better-studied extreme ULXs that are now understood to be local examples of super-Eddington accretion. This likely indicates that NGC 3044 ULX1 is another source accreting at super-Eddington rates. We expect that this catalogue will be a valuable resource for planning future observations of ULXs - both with our current and future X-ray facilities - to further improve our understanding of this enigmatic population. en dc.format.extent 18 dc.language.iso eng dc.relation.ispartof Monthly Notices of the Royal Astronomical Society dc.rights Open dc.subject astro-ph.HE dc.subject astro-ph.GA dc.title A Multi-Mission Catalogue of Ultraluminous X-ray Source Candidates en dc.contributor.institution School of Physics, Engineering & Computer Science dc.contributor.institution Centre for Astrophysics Research dc.contributor.institution Department of Physics, Astronomy and Mathematics dc.description.status Peer reviewed dc.relation.school School of Physics, Engineering & Computer Science dc.description.versiontype Final Published version dcterms.dateAccepted 2022-01-01 rioxxterms.version VoR rioxxterms.versionofrecord https://doi.org/10.1093/mnras/stab3001 rioxxterms.licenseref.uri Unspecified rioxxterms.type Journal Article/Review herts.preservation.rarelyaccessed true herts.rights.accesstype Open
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