Discovery of Merging Twin Quasars at z = 6.05

We report the discovery of two quasars at a redshift of z = 6.05 in the process of merging. They were serendipitously discovered from the deep multiband imaging data collected by the Hyper Suprime-Cam (HSC) Subaru Strategic Program survey. The quasars, HSC J121503.42−014858.7 (C1) and HSC J121503.55...

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Autores: Matsuoka, Yoshiki, Izumi, Takuma, Onoue, Masafusa, Strauss, Michael A., Iwasawa, Kazushi, Kashikawa, Nobunari, Akiyama, Masayuki, Aoki, Kentaro, Arita, Junya, Imanishi, Masatoshi, Ishimoto, Rikako, Kawaguchi, Toshihiro, Kohno, Kotaro, Lee, Chien Hsiu, Nagao, Tohru, Silverman, John D., Toba, Yoshiki
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2024
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/381607
Acesso em linha:http://hdl.handle.net/10261/381607
https://api.elsevier.com/content/abstract/scopus_id/85190157304
Access Level:acceso abierto
Palavra-chave:Double quasars
Quasars
Reionization
High-redshift galaxies
Active galactic nuclei
Galaxy mergers
Supermassive black holes
http://astrothesaurus.org/uat/406
http://astrothesaurus.org/uat/1319
http://astrothesaurus.org/uat/1383
http://astrothesaurus.org/uat/734
http://astrothesaurus.org/uat/16
http://astrothesaurus.org/uat/608
http://astrothesaurus.org/uat/1663
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spelling Discovery of Merging Twin Quasars at z = 6.05Matsuoka, YoshikiIzumi, TakumaOnoue, MasafusaStrauss, Michael A.Iwasawa, KazushiKashikawa, NobunariAkiyama, MasayukiAoki, KentaroArita, JunyaImanishi, MasatoshiIshimoto, RikakoKawaguchi, ToshihiroKohno, KotaroLee, Chien HsiuNagao, TohruSilverman, John D.Toba, YoshikiDouble quasarsQuasarsReionizationHigh-redshift galaxiesActive galactic nucleiGalaxy mergersSupermassive black holeshttp://astrothesaurus.org/uat/406http://astrothesaurus.org/uat/1319http://astrothesaurus.org/uat/1383http://astrothesaurus.org/uat/734http://astrothesaurus.org/uat/16http://astrothesaurus.org/uat/608http://astrothesaurus.org/uat/1663We report the discovery of two quasars at a redshift of z = 6.05 in the process of merging. They were serendipitously discovered from the deep multiband imaging data collected by the Hyper Suprime-Cam (HSC) Subaru Strategic Program survey. The quasars, HSC J121503.42−014858.7 (C1) and HSC J121503.55−014859.3 (C2), both have luminous (>1043 erg s−1) Lyα emission with a clear broad component (full width at half maximum >1000 km s−1). The rest-frame ultraviolet (UV) absolute magnitudes are M 1450 = − 23.106 ± 0.017 (C1) and −22.662 ± 0.024 (C2). Our crude estimates of the black hole masses provide log ( M BH / M ⊙ ) = 8.1 ± 0.3 in both sources. The two quasars are separated by 12 kpc in projected proper distance, bridged by a structure in the rest-UV light suggesting that they are undergoing a merger. This pair is one of the most distant merging quasars reported to date, providing crucial insight into galaxy and black hole build-up in the hierarchical structure formation scenario. A companion paper will present the gas and dust properties captured by Atacama Large Millimeter/submillimeter Array observations, which provide additional evidence for and detailed measurements of the merger, and also demonstrate that the two sources are not gravitationally lensed images of a single quasar.Y.M. was supported by the Japan Society for the Promotion of Science (JSPS) KAKENHI grant No. 21H04494. K.I. acknowledges the support under the grant PID2022-136827NB-C44 provided by MCIN/AEI/10.13039/501100011033/FEDER, EU.Peer reviewedIOP PublishingJapan Society for the Promotion of ScienceAgencia Estatal de Investigación (España)Ministerio de Ciencia e Innovación (España)Matsuoka, Yoshiki [0000-0001-5063-0340]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202520252024info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/381607https://api.elsevier.com/content/abstract/scopus_id/85190157304reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI//PID2022-136827NB-C44https://doi.org/10.3847/2041-8213/ad35c7Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3816072026-05-22T06:33:51Z
dc.title.none.fl_str_mv Discovery of Merging Twin Quasars at z = 6.05
title Discovery of Merging Twin Quasars at z = 6.05
spellingShingle Discovery of Merging Twin Quasars at z = 6.05
Matsuoka, Yoshiki
Double quasars
Quasars
Reionization
High-redshift galaxies
Active galactic nuclei
Galaxy mergers
Supermassive black holes
http://astrothesaurus.org/uat/406
http://astrothesaurus.org/uat/1319
http://astrothesaurus.org/uat/1383
http://astrothesaurus.org/uat/734
http://astrothesaurus.org/uat/16
http://astrothesaurus.org/uat/608
http://astrothesaurus.org/uat/1663
title_short Discovery of Merging Twin Quasars at z = 6.05
title_full Discovery of Merging Twin Quasars at z = 6.05
title_fullStr Discovery of Merging Twin Quasars at z = 6.05
title_full_unstemmed Discovery of Merging Twin Quasars at z = 6.05
title_sort Discovery of Merging Twin Quasars at z = 6.05
dc.creator.none.fl_str_mv Matsuoka, Yoshiki
Izumi, Takuma
Onoue, Masafusa
Strauss, Michael A.
Iwasawa, Kazushi
Kashikawa, Nobunari
Akiyama, Masayuki
Aoki, Kentaro
Arita, Junya
Imanishi, Masatoshi
Ishimoto, Rikako
Kawaguchi, Toshihiro
Kohno, Kotaro
Lee, Chien Hsiu
Nagao, Tohru
Silverman, John D.
Toba, Yoshiki
author Matsuoka, Yoshiki
author_facet Matsuoka, Yoshiki
Izumi, Takuma
Onoue, Masafusa
Strauss, Michael A.
Iwasawa, Kazushi
Kashikawa, Nobunari
Akiyama, Masayuki
Aoki, Kentaro
Arita, Junya
Imanishi, Masatoshi
Ishimoto, Rikako
Kawaguchi, Toshihiro
Kohno, Kotaro
Lee, Chien Hsiu
Nagao, Tohru
Silverman, John D.
Toba, Yoshiki
author_role author
author2 Izumi, Takuma
Onoue, Masafusa
Strauss, Michael A.
Iwasawa, Kazushi
Kashikawa, Nobunari
Akiyama, Masayuki
Aoki, Kentaro
Arita, Junya
Imanishi, Masatoshi
Ishimoto, Rikako
Kawaguchi, Toshihiro
Kohno, Kotaro
Lee, Chien Hsiu
Nagao, Tohru
Silverman, John D.
Toba, Yoshiki
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Japan Society for the Promotion of Science
Agencia Estatal de Investigación (España)
Ministerio de Ciencia e Innovación (España)
Matsuoka, Yoshiki [0000-0001-5063-0340]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Double quasars
Quasars
Reionization
High-redshift galaxies
Active galactic nuclei
Galaxy mergers
Supermassive black holes
http://astrothesaurus.org/uat/406
http://astrothesaurus.org/uat/1319
http://astrothesaurus.org/uat/1383
http://astrothesaurus.org/uat/734
http://astrothesaurus.org/uat/16
http://astrothesaurus.org/uat/608
http://astrothesaurus.org/uat/1663
topic Double quasars
Quasars
Reionization
High-redshift galaxies
Active galactic nuclei
Galaxy mergers
Supermassive black holes
http://astrothesaurus.org/uat/406
http://astrothesaurus.org/uat/1319
http://astrothesaurus.org/uat/1383
http://astrothesaurus.org/uat/734
http://astrothesaurus.org/uat/16
http://astrothesaurus.org/uat/608
http://astrothesaurus.org/uat/1663
description We report the discovery of two quasars at a redshift of z = 6.05 in the process of merging. They were serendipitously discovered from the deep multiband imaging data collected by the Hyper Suprime-Cam (HSC) Subaru Strategic Program survey. The quasars, HSC J121503.42−014858.7 (C1) and HSC J121503.55−014859.3 (C2), both have luminous (>1043 erg s−1) Lyα emission with a clear broad component (full width at half maximum >1000 km s−1). The rest-frame ultraviolet (UV) absolute magnitudes are M 1450 = − 23.106 ± 0.017 (C1) and −22.662 ± 0.024 (C2). Our crude estimates of the black hole masses provide log ( M BH / M ⊙ ) = 8.1 ± 0.3 in both sources. The two quasars are separated by 12 kpc in projected proper distance, bridged by a structure in the rest-UV light suggesting that they are undergoing a merger. This pair is one of the most distant merging quasars reported to date, providing crucial insight into galaxy and black hole build-up in the hierarchical structure formation scenario. A companion paper will present the gas and dust properties captured by Atacama Large Millimeter/submillimeter Array observations, which provide additional evidence for and detailed measurements of the merger, and also demonstrate that the two sources are not gravitationally lensed images of a single quasar.
publishDate 2024
dc.date.none.fl_str_mv 2024
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/381607
https://api.elsevier.com/content/abstract/scopus_id/85190157304
url http://hdl.handle.net/10261/381607
https://api.elsevier.com/content/abstract/scopus_id/85190157304
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/AEI//PID2022-136827NB-C44
https://doi.org/10.3847/2041-8213/ad35c7
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv IOP Publishing
publisher.none.fl_str_mv IOP Publishing
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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