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dc.contributor.authorFlesch, E.
dc.contributor.authorHardcastle, M.J.
dc.date.accessioned2007-07-09T15:29:15Z
dc.date.available2007-07-09T15:29:15Z
dc.date.issued2004-11
dc.identifier.citationFlesch , E & Hardcastle , M J 2004 , ' An all-sky optical catalogue of radio/X-ray sources ' , Astronomy and Astrophysics , vol. 427 , pp. 387-392 . https://doi.org/10.1051/0004-6361:20041076
dc.identifier.issn0004-6361
dc.identifier.otherPURE: 139444
dc.identifier.otherPURE UUID: facc4486-40ad-4fc7-996a-0081666e4a5b
dc.identifier.otherdspace: 2299/197
dc.identifier.otherScopus: 8644279721
dc.identifier.urihttp://hdl.handle.net/2299/197
dc.descriptionOriginal article can be found at: http://www.aanda.org/ Copyright The European Southern Observatory DOI : 10.1051/0004-6361:20041076
dc.description.abstractWe present an all-sky catalogue that aligns and overlays the ROSAT HRI, RASS, PSPC and WGA X-ray catalogues and the NVSS, FIRST and SUMSS radio catalogues onto the optical APM and USNO-A catalogues. Objects presented are those APM/USNO-A optical objects which are calculated with ≥40% confidence to be associated with radio/X-ray detections, or which are identified as known QSOs, AGN or BL Lacs, totalling 501 761 objects in all, including 48 285 QSOs and 21 498 double radio lobe detections. For each radio/X-ray associated optical object we display the calculated percentage probabilities of its being a QSO, galaxy, star, or erroneous radio/X-ray association, plus any identification from the literature. The catalogue includes 86 009 objects which were not previously identified and which we list as being 40% to >99% likely to be a QSO. As a byproduct of the construction of this catalogue, we are able to list comprehensive ROSAT field shifts as determined by our whole-sky likelihood algorithm, and also plate-by-plate photometric recalibration of the complete APM and USNO-A2.0 optical catalogues, significantly improving accuracy for objects of >15 mag. The catalogue is available wholly and in subsets at http://quasars.org/qorg-data.htmen
dc.language.isoeng
dc.relation.ispartofAstronomy and Astrophysics
dc.rightsOpen
dc.titleAn all-sky optical catalogue of radio/X-ray sourcesen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.description.statusPeer reviewed
dc.relation.schoolSchool of Physics, Astronomy and Mathematics
dcterms.dateAccepted2004-11
rioxxterms.versionofrecordhttps://doi.org/10.1051/0004-6361:20041076
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstypeOpen


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