The Million Quasars (Milliquas) catalogue, version 7.2 VII/290 ivo://CDS.VizieR/VII/290 CDS Flesch E.W. 2024-02-13T14:22:39Z 2021-05-04T07:47:20Z CDS support team CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France cds-question@unistra.fr quasars active-galactic-nuclei redshifted apparent-magnitude This is a compendium of 829666 type-I QSOs and AGN, largely complete from the literature to 30 April 2021 including SDSS-DR16 quasars and VLASS radio. Also included are 703348 candidates which are calculated as 60%-100% likely to be quasars, including 225051 which are radio/X-ray associated. Type-II and Bl Lac objects are also included, bringing the total count to 1573824. Gaia-DR2 astrometry is used where available, amounting to ~66% of all objects. Changes from version 7.1 are: (1) Quasars added from publications to 30 April 2021. (2) The VLASS Quick Look radio catalog is included, which adds 34189 new radio core associations and 6793 probable double radio lobe associations. (3) Ongoing audits of SDSS & LAMOST quasars have led to a few additions & drops. Some WISEA-supported SDSS/LAMOST pipeline quasars are now accepted which were otherwise marginal. Also some likely galaxies removed. Low-confidence/quality or questionable objects (so deemed by their researchers) are not included in Milliquas. Additional quality cuts can apply as detailed in the HMQ paper (Flesch, 2015PASA...32...10F). Full QSO/AGN classification is via spectral lines, thus hidden / occluded objects may be absent from Milliquas. Two NIQs offset <2-arcsecs can be reported as a single object if within the same host. The aim here is to present one unique reliable object per each data row. The catalog format is simple, each object is shown as one line bearing the J2000 coordinates, its original name, object class, red and blue optical magnitudes, PSF class, redshift, the citations for the name and redshift, plus up to four radio/X-ray identifiers where applicable. Please cite as Milliquas v7.2, Flesch, E.W. 2021, arXiv:2105.12985 or as Milliquas v7.2 (2021) update, Flesch, E.W. 2015PASA...32...10F. Questions/comments/praise/complaints may be directed to me at eric(at)flesch.org. 2015PASA...32...10F https://cdsarc.cds.unistra.fr/viz-bin/cat/VII/290 Catalog Research IsServedBy TAP VizieR generic service IsServedBy Conesearch service related-to VII/273 : The Half Million Quasars (HMQ) catalogue (Flesch, 2015) VII/277 : The Million Quasars (Milliquas) catalogue (V4.8) (Flesch, 2016) VII/280 : The Million Quasars (Milliquas) catalogue (V5.2) (Flesch, 2017) VII/283 : The Million Quasars (Milliquas) catalogue (V6.3) (Flesch, 2019) https://cds.unistra.fr/vizier-org/licences_vizier.html https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=VII/290 https://vizier.iucaa.in/viz-bin/VizieR-2?-source=VII/290 http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=VII/290 https://vizier.cds.unistra.fr/viz-bin/votable?-source=VII/290 https://vizier.iucaa.in/viz-bin/votable?-source=VII/290 http://vizieridia.saao.ac.za/viz-bin/votable?-source=VII/290 GET text/xml+votable https://tapvizier.cds.unistra.fr/TAPVizieR/tap Cone search capability for table VII/290/catalog (The catalogue (v7.2), 30-April-2021) https://vizier.cds.unistra.fr/viz-bin/conesearch/VII/290/catalog? https://vizier.iucaa.in/viz-bin/conesearch/VII/290/catalog? http://vizieridia.saao.ac.za/viz-bin/conesearch/VII/290/catalog? GET text/xml+votable 180.0 50000 true 0.0006286 35.5178439 0.005555555555555556 0/1-2 4 6 8 1/0 43-45 47 2/8-10 48-49 52-53 58-59 62-63 80 82 85 87-90 122-123 126-127 144 146 149 151-152 154 157 159 170 184-185 3/16 18 23 26 29 31 44-45 48 53 55 61-63 200-201 204-205 216-217 324 326 332-333 337 339 364-366 368 373 375-376 383 464-465 468-469 471 482-483 485-487 496 498-499 502-503 601 603 625 627 632-633 635 640-642 644-645 667 675 677-679 684 686-687 745 748-749 4/68-70 76 78 85 87 97-99 101-102 108 122-123 184-186 188 200 202 209 211 224 231 237-239 241-243 824-825 828-829 872 880-881 883-886 888 904 906-908 910-911 922 926-927 970-971 987 990-991 1308 1310 1336 1338-1342 1347 1380-1381 1384 1386-1387 1468-1470 1480-1481 1484 1486 1488-1489 1491 1508 1510 1513-1516 1518-1519 1525 1527 1813 1834 1839 1868-1869 1881 1883 1908-1909 1920-1921 1923 1925-1927 1936 1938-1939 1990-1991 2002 2320 2322-2323 2328 2330 2352 2354 2362 2373 2380 2382-2383 2403 2450 2456 2458 2480 2482 2488-2490 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43070 43075 43077 43080 43083 43086 43089-43091 43093-43094 43096 43099-43100 43102-43103 43113-43115 43137 43139-43140 43142 43145 43147 43152 43154 43156 43158-43159 43169 43171 43265-43267 43888-43889 43891 47649-47651 47754-47757 47759 47776-47778 47780-47782 47788 47791 47793-47795 47800 47802-47803 47829-47831 48032-48033 48035-48036 48038-48042 48044 48046-48047 48053 48055 48057-48058 48104-48105 48107 https://cdsarc.cds.unistra.fr/viz-bin/moc/VII/290?format=ascii default VII/290/catalog The catalogue (v7.2), 30-April-2021 recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int RAJ2000 Right ascension J2000 (degrees) (1) deg pos.eq.ra;meta.main indexed DEJ2000 Declination J2000 (degrees) (1) deg pos.eq.dec;meta.main indexed Name ID from the literature, or J2000 (2) meta.id;meta.main char Type Classification of object, and associations (3) meta.code.class;src.class char Rmag ? Red optical magnitude (4) mag phot.mag;em.opt.R float nullable Bmag ? Blue optical magnitude (4) mag phot.mag;em.opt.B float nullable Comment Comment on optical object (5) meta.note;spect.dopplerVeloc.opt char R Red Optical PSF class (6) src.class.starGalaxy char B Blue Optical PSF class (6) src.class.starGalaxy char z ? Redshift from the literature or estimated (7) src.redshift float nullable rName Citation for name (8) meta.bib char rz Citation for redshift (8) meta.bib char Qpct ? Probability that this object is a QSO (9) pct stat.fit.goodness int nullable XName X-ray ID, if any (10) meta.id.assoc char RName Radio ID, if any (10) meta.id.assoc char Lobe1 Radio lobe ID or extra R/X ID, if any (10) meta.id.assoc char Lobe2 Radio lobe ID or extra R/X ID, if any (10) meta.id.assoc char
VII/290/refs References (for numerical references) recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int Ref Reference number meta.id;meta.main int N1 ? Number of this reference for Name meta.number int nullable N2 ? Number of this reference for redshift meta.number int nullable Bibcode BibCode meta.bib.bibcode char Aut Author's name meta.bib.author char Com Comments meta.note char