{"id":"https://openalex.org/W2995322684","doi":"https://doi.org/10.21105/astro.2308.01505","title":"The Million Quasars (Milliquas) Catalogue, v8","display_name":"The Million Quasars (Milliquas) Catalogue, v8","publication_year":2023,"publication_date":"2023-12-08","ids":{"openalex":"https://openalex.org/W2995322684","doi":"https://doi.org/10.21105/astro.2308.01505","mag":"2995322684"},"language":"en","primary_location":{"id":"doi:10.21105/astro.2308.01505","doi":"https://doi.org/10.21105/astro.2308.01505","is_oa":true,"landing_page_url":"https://doi.org/10.21105/astro.2308.01505","pdf_url":"https://astro.theoj.org/article/90969.pdf","source":{"id":"https://openalex.org/S4210224606","display_name":"The Open Journal of Astrophysics","issn_l":"2565-6120","issn":["2565-6120"],"is_oa":true,"is_in_doaj":true,"is_core":true,"listed_in":["cwts-core","doaj","jufo-1","norway-1"],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"The Open Journal of Astrophysics","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["arxiv","crossref","datacite","doaj"],"open_access":{"is_oa":true,"oa_status":"diamond","oa_url":"https://astro.theoj.org/article/90969.pdf","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5074571671","display_name":"Eric Wim Flesch","orcid":"https://orcid.org/0000-0002-3991-0728","observed_orcids":["https://orcid.org/0000-0002-3991-0728"]},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"Eric Wim Flesch","raw_affiliation_strings":["PO Box 15, Dannevirke 4942, New Zealand;"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"PO Box 15, Dannevirke 4942, New Zealand;","institution_ids":[]}]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":["https://openalex.org/A5074571671"],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":11.199,"has_fulltext":true,"cited_by_count":173,"citation_normalized_percentile":{"value":0.99366252,"is_in_top_1_percent":true,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":93,"max":100},"biblio":{"volume":"6","issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10026","display_name":"Galaxies: Formation, Evolution, Phenomena","score":0.9926999807357788,"subfield":{"id":"https://openalex.org/subfields/3103","display_name":"Astronomy and Astrophysics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10026","display_name":"Galaxies: Formation, Evolution, Phenomena","score":0.9926999807357788,"subfield":{"id":"https://openalex.org/subfields/3103","display_name":"Astronomy and Astrophysics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10744","display_name":"Astrophysical Phenomena and Observations","score":0.0024999999441206455,"subfield":{"id":"https://openalex.org/subfields/3103","display_name":"Astronomy and Astrophysics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10039","display_name":"Stellar, planetary, and galactic studies","score":0.0015999999595806003,"subfield":{"id":"https://openalex.org/subfields/3103","display_name":"Astronomy and Astrophysics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/quasars","display_name":"quasars","score":0.8320000171661377},{"id":"https://openalex.org/keywords/quasar-catalog","display_name":"quasar catalog","score":0.8989999890327454},{"id":"https://openalex.org/keywords/active-galactic-nuclei","display_name":"active galactic nuclei","score":0.9210000038146973},{"id":"https://openalex.org/keywords/type-ii-quasars","display_name":"type 2 quasars","score":0.9599999785423279},{"id":"https://openalex.org/keywords/blazars","display_name":"blazars","score":0.7139999866485596},{"id":"https://openalex.org/keywords/desorption-electrospray-ionization","display_name":"DESI","score":0.8330000042915344},{"id":"https://openalex.org/keywords/gaia-edr3-astrometry","display_name":"Gaia EDR3 astrometry","score":0.9330000281333923}],"concepts":[{"id":"https://openalex.org/C135041427","wikidata":"https://www.wikidata.org/wiki/Q83373","display_name":"Quasar","level":3,"score":0.9673265218734741},{"id":"https://openalex.org/C2776968204","wikidata":"https://www.wikidata.org/wiki/Q3412366","display_name":"QSOS","level":4,"score":0.8973275423049927},{"id":"https://openalex.org/C73329638","wikidata":"https://www.wikidata.org/wiki/Q527","display_name":"Sky","level":2,"score":0.7681203484535217},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.7671041488647461},{"id":"https://openalex.org/C44870925","wikidata":"https://www.wikidata.org/wiki/Q37547","display_name":"Astrophysics","level":1,"score":0.7343342304229736},{"id":"https://openalex.org/C133725777","wikidata":"https://www.wikidata.org/wiki/Q181505","display_name":"Astrometry","level":3,"score":0.7319997549057007},{"id":"https://openalex.org/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","level":1,"score":0.6038768291473389},{"id":"https://openalex.org/C98444146","wikidata":"https://www.wikidata.org/wiki/Q318","display_name":"Galaxy","level":2,"score":0.5878462791442871},{"id":"https://openalex.org/C150846664","wikidata":"https://www.wikidata.org/wiki/Q7602306","display_name":"Stars","level":2,"score":0.16631275415420532}],"mesh":[],"locations_count":7,"locations":[{"id":"doi:10.21105/astro.2308.01505","doi":"https://doi.org/10.21105/astro.2308.01505","is_oa":true,"landing_page_url":"https://doi.org/10.21105/astro.2308.01505","pdf_url":"https://astro.theoj.org/article/90969.pdf","source":{"id":"https://openalex.org/S4210224606","display_name":"The Open Journal of Astrophysics","issn_l":"2565-6120","issn":["2565-6120"],"is_oa":true,"is_in_doaj":true,"is_core":true,"listed_in":["cwts-core","doaj","jufo-1","norway-1"],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"The Open Journal of Astrophysics","raw_type":"journal-article"},{"id":"pmh:oai:arXiv.org:1912.05614","doi":null,"is_oa":true,"landing_page_url":"http://arxiv.org/abs/1912.05614","pdf_url":"https://arxiv.org/pdf/1912.05614","source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"},{"id":"pmh:oai:arXiv.org:2308.01505","doi":null,"is_oa":true,"landing_page_url":"http://arxiv.org/abs/2308.01505","pdf_url":"https://arxiv.org/pdf/2308.01505","source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"},{"id":"pmh:oai:doaj.org/article:c7edc8777a04402aa11981c18aa5ede9","doi":null,"is_oa":true,"landing_page_url":"https://doaj.org/article/c7edc8777a04402aa11981c18aa5ede9","pdf_url":null,"source":{"id":"https://openalex.org/S4306401280","display_name":"DOAJ (DOAJ: Directory of Open Access Journals)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"The Open Journal of Astrophysics, Vol 6 (2023)","raw_type":"article"},{"id":"pmh:oai:doaj.org/article:d665f4d835b04422b7ba83df39afa2b3","doi":null,"is_oa":true,"landing_page_url":"https://doaj.org/article/d665f4d835b04422b7ba83df39afa2b3","pdf_url":null,"source":{"id":"https://openalex.org/S4306401280","display_name":"DOAJ (DOAJ: Directory of Open Access Journals)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"The Open Journal of Astrophysics, Vol 6 (2023)","raw_type":"article"},{"id":"doi:10.48550/arxiv.1912.05614","doi":"https://doi.org/10.48550/arxiv.1912.05614","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.1912.05614","pdf_url":null,"source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"Preprint"},{"id":"doi:10.48550/arxiv.2308.01505","doi":"https://doi.org/10.48550/arxiv.2308.01505","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.2308.01505","pdf_url":null,"source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"article-journal"}],"best_oa_location":{"id":"doi:10.21105/astro.2308.01505","doi":"https://doi.org/10.21105/astro.2308.01505","is_oa":true,"landing_page_url":"https://doi.org/10.21105/astro.2308.01505","pdf_url":"https://astro.theoj.org/article/90969.pdf","source":{"id":"https://openalex.org/S4210224606","display_name":"The Open Journal of Astrophysics","issn_l":"2565-6120","issn":["2565-6120"],"is_oa":true,"is_in_doaj":true,"is_core":true,"listed_in":["cwts-core","doaj","jufo-1","norway-1"],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"The Open Journal of Astrophysics","raw_type":"journal-article"},"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2995322684.pdf","grobid_xml":"https://content.openalex.org/works/W2995322684.grobid-xml"},"referenced_works_count":10,"referenced_works":["https://openalex.org/W2116214941","https://openalex.org/W2563171474","https://openalex.org/W3165291762","https://openalex.org/W4281614653","https://openalex.org/W4297797769","https://openalex.org/W4380551324","https://openalex.org/W4385664020","https://openalex.org/W4391127973","https://openalex.org/W4400399828","https://openalex.org/W6910795818"],"related_works":["https://openalex.org/W3165291762","https://openalex.org/W2031659408","https://openalex.org/W3211841787","https://openalex.org/W3213858855","https://openalex.org/W2994482378","https://openalex.org/W2952994672","https://openalex.org/W7099360274","https://openalex.org/W3161836071","https://openalex.org/W2892551013","https://openalex.org/W1639995066"],"abstract_inverted_index":{"Announcing":[0],"the":[1,6,24,28,35,65],"final":[2],"release,":[3],"v8,":[4],"of":[5,27],"Milliquas":[7],"(Million":[8],"Quasars)":[9],"quasar":[10,53],"catalogue":[11,78],"which":[12],"presents":[13],"all":[14],"published":[15],"quasars":[16,22],"to":[17,68],"30":[18],"June":[19],"2023,":[20],"including":[21],"from":[23],"first":[25],"releases":[26],"Dark":[29],"Energy":[30],"Spectroscopic":[31],"Instrument":[32],"(DESI)":[33],"and":[34,46,56],"SDSS-DR18":[36],"Black":[37],"Hole":[38],"Mapper.":[39],"Its":[40],"totals":[41],"are":[42,61],"907,144":[43],"type-I":[44],"QSOs/AGN":[45],"66,026":[47],"high-confidence":[48],"(~99%":[49],"likelihood)":[50],"radio/X-ray":[51],"associated":[52],"candidates.":[54],"Type-II":[55],"Bl":[57],"Lac":[58],"type":[59],"objects":[60],"also":[62],"included,":[63],"bringing":[64],"total":[66],"count":[67],"1,021,800.":[69],"Gaia-EDR3":[70],"astrometry":[71],"is":[72,79],"given":[73],"for":[74],"most":[75],"objects.":[76],"The":[77],"available":[80],"on":[81],"multiple":[82],"sites.":[83]},"counts_by_year":[{"year":2026,"cited_by_count":66},{"year":2025,"cited_by_count":54},{"year":2024,"cited_by_count":31},{"year":2023,"cited_by_count":6},{"year":2022,"cited_by_count":4},{"year":2021,"cited_by_count":10},{"year":2020,"cited_by_count":2}],"updated_date":"2026-11-07T11:25:07.637180","created_date":"2019-12-26T00:00:00"}