{"id":"https://openalex.org/W2067567258","doi":"https://doi.org/10.1111/j.1365-2966.2006.10786.x","title":"New age estimates of M31 globular clusters from multicolour photometry","display_name":"New age estimates of M31 globular clusters from multicolour photometry","publication_year":2006,"publication_date":"2006-09-13","ids":{"openalex":"https://openalex.org/W2067567258","doi":"https://doi.org/10.1111/j.1365-2966.2006.10786.x","mag":"2067567258"},"language":"en","primary_location":{"id":"doi:10.1111/j.1365-2966.2006.10786.x","doi":"https://doi.org/10.1111/j.1365-2966.2006.10786.x","is_oa":true,"landing_page_url":"https://doi.org/10.1111/j.1365-2966.2006.10786.x","pdf_url":"https://academic.oup.com/mnras/article-pdf/371/4/1648/3613388/mnras0371-1648.pdf","source":{"id":"https://openalex.org/S195663288","display_name":"Monthly Notices of the Royal Astronomical Society","issn_l":"0035-8711","issn":["0035-8711","1365-2966","1365-8711"],"is_oa":false,"is_in_doaj":true,"is_core":true,"listed_in":["anvur-scientific","cwts-core","doaj","dongbi-a","jufo-2","ki-jl-1","norway-1","oarl","poland-140","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310311648","host_organization_name":"Oxford University Press","host_organization_lineage":["https://openalex.org/P4310311648","https://openalex.org/P4310311647"],"host_organization_lineage_names":["Oxford University Press","University of Oxford"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Monthly Notices of the Royal Astronomical Society","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["arxiv","crossref","datacite","doaj"],"open_access":{"is_oa":true,"oa_status":"bronze","oa_url":"https://academic.oup.com/mnras/article-pdf/371/4/1648/3613388/mnras0371-1648.pdf","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":null,"display_name":"Z. Fan","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I19820366","display_name":"Chinese Academy of Sciences","ror":"https://ror.org/034t30j35","country_code":"CN","type":"government","lineage":["https://openalex.org/I19820366"]},{"id":"https://openalex.org/I4210164580","display_name":"National Astronomical Observatories","ror":"https://ror.org/058pyyv44","country_code":"CN","type":"facility","lineage":["https://openalex.org/I19820366","https://openalex.org/I4210164580"]},{"id":"https://openalex.org/I4210165038","display_name":"University of Chinese Academy of Sciences","ror":"https://ror.org/05qbk4x57","country_code":"CN","type":"education","lineage":["https://openalex.org/I19820366","https://openalex.org/I4210165038"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Z. Fan","raw_affiliation_strings":["Graduate University of Chinese Academy of Sciences, 19A Yuquan Road, Shijingshan District, Beijing 100049, China","National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Graduate University of Chinese Academy of Sciences, 19A Yuquan Road, Shijingshan District, Beijing 100049, China","institution_ids":["https://openalex.org/I4210165038"]},{"raw_affiliation_string":"National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, China","institution_ids":["https://openalex.org/I19820366","https://openalex.org/I4210164580"]}]},{"author_position":"middle","author":{"id":null,"display_name":"J. Ma","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I19820366","display_name":"Chinese Academy of Sciences","ror":"https://ror.org/034t30j35","country_code":"CN","type":"government","lineage":["https://openalex.org/I19820366"]},{"id":"https://openalex.org/I4210164580","display_name":"National Astronomical Observatories","ror":"https://ror.org/058pyyv44","country_code":"CN","type":"facility","lineage":["https://openalex.org/I19820366","https://openalex.org/I4210164580"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"J. Ma","raw_affiliation_strings":["National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, China","institution_ids":["https://openalex.org/I19820366","https://openalex.org/I4210164580"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5010873223","display_name":"Richard de Grijs","orcid":"https://orcid.org/0000-0002-7203-5996","observed_orcids":["https://orcid.org/0000-0002-7203-5996"]},"institutions":[{"id":"https://openalex.org/I91136226","display_name":"University of Sheffield","ror":"https://ror.org/05krs5044","country_code":"GB","type":"education","lineage":["https://openalex.org/I91136226"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"R. De Grijs","raw_affiliation_strings":["Department of Physics & Astronomy, The University of Sheffield, Hicks Building, Hounsfield Road, Sheffield S3 7RH"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Physics & Astronomy, The University of Sheffield, Hicks Building, Hounsfield Road, Sheffield S3 7RH","institution_ids":["https://openalex.org/I91136226"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5062016286","display_name":"Yanbin Yang","orcid":"https://orcid.org/0000-0001-7949-3407","observed_orcids":["https://orcid.org/0000-0001-7949-3407"]},"institutions":[{"id":"https://openalex.org/I19820366","display_name":"Chinese Academy of Sciences","ror":"https://ror.org/034t30j35","country_code":"CN","type":"government","lineage":["https://openalex.org/I19820366"]},{"id":"https://openalex.org/I4210164580","display_name":"National Astronomical Observatories","ror":"https://ror.org/058pyyv44","country_code":"CN","type":"facility","lineage":["https://openalex.org/I19820366","https://openalex.org/I4210164580"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Y. Yang","raw_affiliation_strings":["National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, China","institution_ids":["https://openalex.org/I19820366","https://openalex.org/I4210164580"]}]},{"author_position":"last","author":{"id":null,"display_name":"X. Zhou","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I19820366","display_name":"Chinese Academy of Sciences","ror":"https://ror.org/034t30j35","country_code":"CN","type":"government","lineage":["https://openalex.org/I19820366"]},{"id":"https://openalex.org/I4210164580","display_name":"National Astronomical Observatories","ror":"https://ror.org/058pyyv44","country_code":"CN","type":"facility","lineage":["https://openalex.org/I19820366","https://openalex.org/I4210164580"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"X. Zhou","raw_affiliation_strings":["National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, China","institution_ids":["https://openalex.org/I19820366","https://openalex.org/I4210164580"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":4,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I19820366","https://openalex.org/I4210164580"],"apc_list":{"value":2310,"currency":"GBP","value_usd":3046},"apc_paid":null,"fwci":1.2963,"has_fulltext":true,"cited_by_count":35,"citation_normalized_percentile":{"value":0.78391173,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":88,"max":98},"biblio":{"volume":"371","issue":"4","first_page":"1648","last_page":"1658"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10039","display_name":"Stellar, planetary, and galactic studies","score":0.9077000021934509,"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/T10039","display_name":"Stellar, planetary, and galactic studies","score":0.9077000021934509,"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/T10026","display_name":"Galaxies: Formation, Evolution, Phenomena","score":0.08449999988079071,"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/T12917","display_name":"Astronomy and Astrophysical Research","score":0.0008999999845400453,"subfield":{"id":"https://openalex.org/subfields/3105","display_name":"Instrumentation"},"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/m31-globular-clusters","display_name":"M31 globular clusters","score":0.9290000200271606},{"id":"https://openalex.org/keywords/globular-cluster-ages","display_name":"globular cluster ages","score":0.9309999942779541},{"id":"https://openalex.org/keywords/age-metallicity-degeneracy","display_name":"age-metallicity degeneracy","score":0.9010000228881836},{"id":"https://openalex.org/keywords/multiband-photometry","display_name":"multi-band photometry","score":0.8960000276565552},{"id":"https://openalex.org/keywords/2mass-photometry","display_name":"2MASS photometry","score":0.8389999866485596},{"id":"https://openalex.org/keywords/stellar-population-synthesis","display_name":"stellar population synthesis","score":0.5839999914169312},{"id":"https://openalex.org/keywords/age-distribution","display_name":"age distribution","score":0.5669999718666077},{"id":"https://openalex.org/keywords/metallicity","display_name":"metallicity","score":0.6629999876022339},{"id":"https://openalex.org/keywords/extragalactic-star-clusters","display_name":"extragalactic star clusters","score":0.6150000095367432}],"concepts":[{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.9126999974250793},{"id":"https://openalex.org/C113461152","wikidata":"https://www.wikidata.org/wiki/Q11276","display_name":"Globular cluster","level":3,"score":0.910099983215332},{"id":"https://openalex.org/C44870925","wikidata":"https://www.wikidata.org/wiki/Q37547","display_name":"Astrophysics","level":1,"score":0.7501999735832214},{"id":"https://openalex.org/C68271606","wikidata":"https://www.wikidata.org/wiki/Q625648","display_name":"Photometry (optics)","level":3,"score":0.7444000244140625},{"id":"https://openalex.org/C48393594","wikidata":"https://www.wikidata.org/wiki/Q168845","display_name":"Star cluster","level":3,"score":0.6572999954223633},{"id":"https://openalex.org/C99465377","wikidata":"https://www.wikidata.org/wiki/Q217030","display_name":"Metallicity","level":3,"score":0.6500999927520752},{"id":"https://openalex.org/C2778623024","wikidata":"https://www.wikidata.org/wiki/Q1436016","display_name":"Stellar population","level":4,"score":0.5422000288963318},{"id":"https://openalex.org/C73329638","wikidata":"https://www.wikidata.org/wiki/Q527","display_name":"Sky","level":2,"score":0.5037000179290771},{"id":"https://openalex.org/C101991246","wikidata":"https://www.wikidata.org/wiki/Q5422078","display_name":"Extinction (optical mineralogy)","level":2,"score":0.4869000017642975},{"id":"https://openalex.org/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","level":1,"score":0.46619999408721924},{"id":"https://openalex.org/C188195645","wikidata":"https://www.wikidata.org/wiki/Q7601206","display_name":"Star count","level":5,"score":0.4113999903202057},{"id":"https://openalex.org/C555520305","wikidata":"https://www.wikidata.org/wiki/Q321","display_name":"Milky Way","level":3,"score":0.4036000072956085},{"id":"https://openalex.org/C125857072","wikidata":"https://www.wikidata.org/wiki/Q16744","display_name":"Star formation","level":3,"score":0.37529999017715454},{"id":"https://openalex.org/C164866538","wikidata":"https://www.wikidata.org/wiki/Q367351","display_name":"Cluster (spacecraft)","level":2,"score":0.37139999866485596},{"id":"https://openalex.org/C2777727622","wikidata":"https://www.wikidata.org/wiki/Q5251772","display_name":"Degeneracy (biology)","level":2,"score":0.3375000059604645},{"id":"https://openalex.org/C188984411","wikidata":"https://www.wikidata.org/wiki/Q124313","display_name":"Apparent magnitude","level":3,"score":0.33570000529289246},{"id":"https://openalex.org/C110472602","wikidata":"https://www.wikidata.org/wiki/Q6472","display_name":"Stellar evolution","level":3,"score":0.32249999046325684},{"id":"https://openalex.org/C150846664","wikidata":"https://www.wikidata.org/wiki/Q7602306","display_name":"Stars","level":2,"score":0.3059000074863434},{"id":"https://openalex.org/C3020318244","wikidata":"https://www.wikidata.org/wiki/Q4812187","display_name":"Large sample","level":2,"score":0.28839999437332153},{"id":"https://openalex.org/C126691448","wikidata":"https://www.wikidata.org/wiki/Q2028919","display_name":"Magnitude (astronomy)","level":2,"score":0.2773999869823456},{"id":"https://openalex.org/C98444146","wikidata":"https://www.wikidata.org/wiki/Q318","display_name":"Galaxy","level":2,"score":0.2743000090122223},{"id":"https://openalex.org/C52348108","wikidata":"https://www.wikidata.org/wiki/Q11387","display_name":"Open cluster","level":3,"score":0.27079999446868896},{"id":"https://openalex.org/C2778521188","wikidata":"https://www.wikidata.org/wiki/Q7607197","display_name":"Stellar density","level":3,"score":0.2667999863624573},{"id":"https://openalex.org/C83160514","wikidata":"https://www.wikidata.org/wiki/Q17512228","display_name":"Galaxy groups and clusters","level":4,"score":0.2612000107765198}],"mesh":[],"locations_count":4,"locations":[{"id":"doi:10.1111/j.1365-2966.2006.10786.x","doi":"https://doi.org/10.1111/j.1365-2966.2006.10786.x","is_oa":true,"landing_page_url":"https://doi.org/10.1111/j.1365-2966.2006.10786.x","pdf_url":"https://academic.oup.com/mnras/article-pdf/371/4/1648/3613388/mnras0371-1648.pdf","source":{"id":"https://openalex.org/S195663288","display_name":"Monthly Notices of the Royal Astronomical Society","issn_l":"0035-8711","issn":["0035-8711","1365-2966","1365-8711"],"is_oa":false,"is_in_doaj":true,"is_core":true,"listed_in":["anvur-scientific","cwts-core","doaj","dongbi-a","jufo-2","ki-jl-1","norway-1","oarl","poland-140","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310311648","host_organization_name":"Oxford University Press","host_organization_lineage":["https://openalex.org/P4310311648","https://openalex.org/P4310311647"],"host_organization_lineage_names":["Oxford University Press","University of Oxford"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Monthly Notices of the Royal Astronomical Society","raw_type":"journal-article"},{"id":"pmh:oai:arXiv.org:astro-ph/0607283","doi":null,"is_oa":true,"landing_page_url":"http://arxiv.org/abs/astro-ph/0607283","pdf_url":"https://arxiv.org/pdf/astro-ph/0607283","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:cds.cern.ch:972137","doi":null,"is_oa":false,"landing_page_url":"http://cds.cern.ch/record/972137","pdf_url":null,"source":{"id":"https://openalex.org/S4306402195","display_name":"CERN Document Server (European Organization for Nuclear Research)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I67311998","host_organization_name":"European Organization for Nuclear Research","host_organization_lineage":["https://openalex.org/I67311998"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":null},{"id":"doi:10.48550/arxiv.astro-ph/0607283","doi":"https://doi.org/10.48550/arxiv.astro-ph/0607283","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.astro-ph/0607283","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":"article-journal"}],"best_oa_location":{"id":"doi:10.1111/j.1365-2966.2006.10786.x","doi":"https://doi.org/10.1111/j.1365-2966.2006.10786.x","is_oa":true,"landing_page_url":"https://doi.org/10.1111/j.1365-2966.2006.10786.x","pdf_url":"https://academic.oup.com/mnras/article-pdf/371/4/1648/3613388/mnras0371-1648.pdf","source":{"id":"https://openalex.org/S195663288","display_name":"Monthly Notices of the Royal Astronomical Society","issn_l":"0035-8711","issn":["0035-8711","1365-2966","1365-8711"],"is_oa":false,"is_in_doaj":true,"is_core":true,"listed_in":["anvur-scientific","cwts-core","doaj","dongbi-a","jufo-2","ki-jl-1","norway-1","oarl","poland-140","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310311648","host_organization_name":"Oxford University Press","host_organization_lineage":["https://openalex.org/P4310311648","https://openalex.org/P4310311647"],"host_organization_lineage_names":["Oxford University Press","University of Oxford"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Monthly Notices of the Royal Astronomical Society","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/W2067567258.pdf","grobid_xml":"https://content.openalex.org/works/W2067567258.grobid-xml"},"referenced_works_count":69,"referenced_works":["https://openalex.org/W1569701120","https://openalex.org/W1580006248","https://openalex.org/W1657460176","https://openalex.org/W1965543352","https://openalex.org/W1971742106","https://openalex.org/W1972513671","https://openalex.org/W1977222439","https://openalex.org/W1983993499","https://openalex.org/W1985034678","https://openalex.org/W1985695852","https://openalex.org/W1989721545","https://openalex.org/W1989871154","https://openalex.org/W1994574264","https://openalex.org/W1994671833","https://openalex.org/W1999018575","https://openalex.org/W1999105363","https://openalex.org/W2008207168","https://openalex.org/W2013013065","https://openalex.org/W2014126225","https://openalex.org/W2015295900","https://openalex.org/W2018259295","https://openalex.org/W2018886162","https://openalex.org/W2020041699","https://openalex.org/W2021939148","https://openalex.org/W2024848234","https://openalex.org/W2026714179","https://openalex.org/W2027924499","https://openalex.org/W2029438261","https://openalex.org/W2039617041","https://openalex.org/W2045064296","https://openalex.org/W2045348134","https://openalex.org/W2047550777","https://openalex.org/W2051333210","https://openalex.org/W2051542137","https://openalex.org/W2060946302","https://openalex.org/W2062564220","https://openalex.org/W2062966120","https://openalex.org/W2063101097","https://openalex.org/W2063361568","https://openalex.org/W2066196023","https://openalex.org/W2070304421","https://openalex.org/W2078619493","https://openalex.org/W2078907125","https://openalex.org/W2081298755","https://openalex.org/W2082592033","https://openalex.org/W2084883565","https://openalex.org/W2087291931","https://openalex.org/W2092778484","https://openalex.org/W2093264751","https://openalex.org/W2103023910","https://openalex.org/W2106900400","https://openalex.org/W2110021525","https://openalex.org/W2110862185","https://openalex.org/W2112559934","https://openalex.org/W2131522386","https://openalex.org/W2139678697","https://openalex.org/W2147406827","https://openalex.org/W2147904130","https://openalex.org/W2154174189","https://openalex.org/W2159523499","https://openalex.org/W2161627373","https://openalex.org/W2163197622","https://openalex.org/W2165084703","https://openalex.org/W2166531135","https://openalex.org/W2167635287","https://openalex.org/W2599734048","https://openalex.org/W2734996431","https://openalex.org/W4248489183","https://openalex.org/W4255135205"],"related_works":["https://openalex.org/W2277075408","https://openalex.org/W1630010296","https://openalex.org/W1969918173","https://openalex.org/W4391294495","https://openalex.org/W4255135205","https://openalex.org/W7100557942","https://openalex.org/W7100927110","https://openalex.org/W7095541260","https://openalex.org/W3104101308","https://openalex.org/W3102953946"],"abstract_inverted_index":{"The":[0],"large":[1],"majority":[2,173],"of":[3,36,100,128,144,162,168,174,198,209],"extragalactic":[4],"star":[5],"cluster":[6,38],"studies":[7,35],"performed":[8],"to":[9,21],"date":[10],"essentially":[11],"use":[12],"multicolour":[13],"photometry,":[14,87],"combined":[15],"with":[16,85],"theoretical":[17,59],"stellar":[18,60],"synthesis":[19,61],"models,":[20],"derive":[22],"ages,":[23],"masses,":[24],"extinction":[25],"estimates":[26,48],"and":[27,63,146,152,201],"metallicities.":[28],"M31":[29,51,216],"offers":[30],"a":[31,101,195],"unique":[32],"laboratory":[33],"for":[34,49,123],"globular":[37],"(GC)":[39],"systems.":[40],"In":[41,68],"this":[42,119],"paper,":[43],"we":[44,70],"obtain":[45],"new":[46,65],"age":[47,109,140,170],"91":[50],"GCs,":[52,148,165,204],"based":[53,111],"on":[54,112],"improved":[55],"photometric":[56,72,113],"data,":[57],"updated":[58],"models":[62],"sophisticated":[64],"fitting":[66],"methods.":[67],"particular,":[69],"used":[71],"measurements":[73],"from":[74],"the":[75,91,126,159,172,175,215],"Two":[76],"Micron":[77],"All":[78],"Sky":[79],"Survey":[80],"(2MASS),":[81],"which,":[82],"in":[83,98,188],"combination":[84],"optical":[86],"can":[88],"partially":[89],"break":[90],"well-known":[92,163],"age\u2013metallicity":[93,120,212],"degeneracy":[94],"operating":[95],"at":[96,150,190],"ages":[97,127],"excess":[99],"few":[102],"Gyr.":[103,138],"We":[104],"show":[105,181],"robustly":[106],"that":[107,182],"previous":[108],"determinations":[110],"data":[114],"were":[115],"affected":[116],"significantly":[117],"by":[118],"degeneracy.":[121],"Except":[122],"one":[124],"cluster,":[125],"our":[129],"other":[130],"sample":[131],"GCs":[132,167],"are":[133],"all":[134],"older":[135],"than":[136],"1":[137],"Their":[139],"distribution":[141],"shows":[142],"populations":[143],"young-":[145],"intermediate-age":[147],"peaking":[149],"\u223c3":[151],"8":[153],"Gyr,":[154],"respectively,":[155],"as":[156,158,171],"well":[157],"\u2018usual\u2019":[160],"complement":[161],"old":[164,202],"i.e.":[166],"similar":[169],"Galactic":[176],"GCs.":[177],"Our":[178],"results":[179],"also":[180],"although":[183],"there":[184,193],"is":[185,194],"significant":[186],"scatter":[187],"metallicity":[189],"any":[191],"age,":[192],"notable":[196],"lack":[197],"young":[199],"metal-poor":[200],"metal-rich":[203],"which":[205],"might":[206],"be":[207],"indicative":[208],"an":[210],"underlying":[211],"relationship":[213],"among":[214],"GC":[217],"population.":[218]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2024,"cited_by_count":1},{"year":2020,"cited_by_count":1},{"year":2019,"cited_by_count":1},{"year":2018,"cited_by_count":1},{"year":2017,"cited_by_count":2},{"year":2016,"cited_by_count":2},{"year":2014,"cited_by_count":1},{"year":2012,"cited_by_count":6}],"updated_date":"2026-11-10T11:39:43.021295","created_date":"2016-06-24T00:00:00"}
