J-PAS: Discovery of RaJav, a bright extended Lyα Nebula at z = 2.25
We report the discovery of a massive Ly nebula (potentially largest ever discovered), RaJav, at z = 2:25, associated with a quasar pair: the bright SDSS J162029.07+433451.1 (hereafter J1620+4334) and the faint newly discovered quasar JPAS-9600-10844, at 2.265 0.021 using the early data release (17 d...
| Autores: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
|---|---|
| Tipo de documento: | artigo |
| Estado: | Versão publicada |
| Data de publicação: | 2025 |
| País: | España |
| Recursos: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositório: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/412321 |
| Acesso em linha: | http://hdl.handle.net/10261/412321 |
| Access Level: | Acceso aberto |
| Palavra-chave: | Galaxies: active Galaxies: evolution Galaxies: high-redshift Galaxies: interactions Intergalactic medium Quasars: emission lines |
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España |
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| dc.title.none.fl_str_mv |
J-PAS: Discovery of RaJav, a bright extended Lyα Nebula at z = 2.25 |
| title |
J-PAS: Discovery of RaJav, a bright extended Lyα Nebula at z = 2.25 |
| spellingShingle |
J-PAS: Discovery of RaJav, a bright extended Lyα Nebula at z = 2.25 Rahna, P. T. Galaxies: active Galaxies: evolution Galaxies: high-redshift Galaxies: interactions Intergalactic medium Quasars: emission lines |
| title_short |
J-PAS: Discovery of RaJav, a bright extended Lyα Nebula at z = 2.25 |
| title_full |
J-PAS: Discovery of RaJav, a bright extended Lyα Nebula at z = 2.25 |
| title_fullStr |
J-PAS: Discovery of RaJav, a bright extended Lyα Nebula at z = 2.25 |
| title_full_unstemmed |
J-PAS: Discovery of RaJav, a bright extended Lyα Nebula at z = 2.25 |
| title_sort |
J-PAS: Discovery of RaJav, a bright extended Lyα Nebula at z = 2.25 |
| dc.creator.none.fl_str_mv |
Rahna, P. T. Akhlaghi, Mohammad Fernández-Ontiveros, Juan Antonio Zheng, Zhen-Ya Hernán-Caballero, Antonio Amorín, R. López-Sanjuan, Carlos Diego, José María Díaz-García, L. A. Vílchez Medina, José Manuel Lumbreras-Calle, Alejandro Fernández Gil, David Gurung-López, Siddhartha Jiménez-Teja, Y. Ederoclite, Alessandro González Delgado, Rosa M. Vázquez Ramió, H. Abramo, L. R. Alcaniz, Jailson Benítez, Narciso Bonoli, Silvia Carneiro, Saulo Cenarro, A. J. Cristóbal-Hornillos, David Dupke, Renato A. Hernández-Monteagudo, Carlos Marín-Franch, Antonio Mendes de Oliveira, Claudia Moles, Mariano Sodré Jr., L. Taylor, Keith Varela, Jesús |
| author |
Rahna, P. T. |
| author_facet |
Rahna, P. T. Akhlaghi, Mohammad Fernández-Ontiveros, Juan Antonio Zheng, Zhen-Ya Hernán-Caballero, Antonio Amorín, R. López-Sanjuan, Carlos Diego, José María Díaz-García, L. A. Vílchez Medina, José Manuel Lumbreras-Calle, Alejandro Fernández Gil, David Gurung-López, Siddhartha Jiménez-Teja, Y. Ederoclite, Alessandro González Delgado, Rosa M. Vázquez Ramió, H. Abramo, L. R. Alcaniz, Jailson Benítez, Narciso Bonoli, Silvia Carneiro, Saulo Cenarro, A. J. Cristóbal-Hornillos, David Dupke, Renato A. Hernández-Monteagudo, Carlos Marín-Franch, Antonio Mendes de Oliveira, Claudia Moles, Mariano Sodré Jr., L. Taylor, Keith Varela, Jesús |
| author_role |
author |
| author2 |
Akhlaghi, Mohammad Fernández-Ontiveros, Juan Antonio Zheng, Zhen-Ya Hernán-Caballero, Antonio Amorín, R. López-Sanjuan, Carlos Diego, José María Díaz-García, L. A. Vílchez Medina, José Manuel Lumbreras-Calle, Alejandro Fernández Gil, David Gurung-López, Siddhartha Jiménez-Teja, Y. Ederoclite, Alessandro González Delgado, Rosa M. Vázquez Ramió, H. Abramo, L. R. Alcaniz, Jailson Benítez, Narciso Bonoli, Silvia Carneiro, Saulo Cenarro, A. J. Cristóbal-Hornillos, David Dupke, Renato A. Hernández-Monteagudo, Carlos Marín-Franch, Antonio Mendes de Oliveira, Claudia Moles, Mariano Sodré Jr., L. Taylor, Keith Varela, Jesús |
| author2_role |
author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author |
| dc.contributor.none.fl_str_mv |
European Commission Gobierno de Aragón Fondo de Inversiones de Teruel Ministerio de Ciencia, Innovación y Universidades (España) Agencia Estatal de Investigación (España) Ministerio de Economía y Competitividad (España) Generalitat Valenciana Fundação de Amparo à Pesquisa do Estado de São Paulo Fundações de Amparo à Pesquisa (Brasil) Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72] |
| dc.subject.none.fl_str_mv |
Galaxies: active Galaxies: evolution Galaxies: high-redshift Galaxies: interactions Intergalactic medium Quasars: emission lines |
| topic |
Galaxies: active Galaxies: evolution Galaxies: high-redshift Galaxies: interactions Intergalactic medium Quasars: emission lines |
| description |
We report the discovery of a massive Ly nebula (potentially largest ever discovered), RaJav, at z = 2:25, associated with a quasar pair: the bright SDSS J162029.07+433451.1 (hereafter J1620+4334) and the faint newly discovered quasar JPAS-9600-10844, at 2.265 0.021 using the early data release (17 deg2) of the Javalambre Physics of the Accelerating Universe Astrophysical Survey (J-PAS). The quasar JPAS-9600-10844 embedded in the nebula is located at 60.2 kpc (7.300) from J1620+4334, and shows a compact structure with broad emission lines (>3000 km/s), typical of active galactic nuclei (i.e., Ly 1216 and CIV 1548). At a 2 surface brightness (SB) contour of 1:86 10-16 erg s-1 cm-2 arcsec-2, the nebula extends beyond 100 kpc and has a total Ly luminosity of 5:8 0:7 1044 erg s-1 which signifies the presence of an enormous Ly nebula (ELAN). The nebula traces an overdensity of quasars at a redshift of 2.2–2.3 consistent with the progenitor of a massive galaxy cluster. The extended CIV emission with luminosity of 3:7 0:5 1044 erg s-1 indicates that the circumgalactic medium (CGM) is metal-enriched and not primordial. The current J-PAS observations suggest photoionization and shocks due to outflows as possible ionization mechanisms. The faint extended far-UV and near-UV continuum emission likely points to ongoing star formation around the two quasars, suggesting a complex interaction in their environments. These findings provide new insights into the environment of quasars and their role in shaping the dynamics and evolution of the CGM at cosmic noon. Further spectroscopic observations will be required to fully characterize the object’s nature and its kinematic properties. This study demonstrates the unique capability of J-PAS to detect massive and rare Ly nebulae, providing new insights into their properties, environments, and connections to large-scale structures in the cosmic web such as filaments and overdensities in a large cosmological volume. |
| publishDate |
2025 |
| dc.date.none.fl_str_mv |
2025 2026 2026 |
| 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 |
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article |
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publishedVersion |
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http://hdl.handle.net/10261/412321 |
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http://hdl.handle.net/10261/412321 |
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Inglés |
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Inglés |
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J-PAS: Discovery of RaJav, a bright extended Lyα Nebula at z = 2.25Rahna, P. T.Akhlaghi, MohammadFernández-Ontiveros, Juan AntonioZheng, Zhen-YaHernán-Caballero, AntonioAmorín, R.López-Sanjuan, CarlosDiego, José MaríaDíaz-García, L. A.Vílchez Medina, José ManuelLumbreras-Calle, AlejandroFernández Gil, DavidGurung-López, SiddharthaJiménez-Teja, Y.Ederoclite, AlessandroGonzález Delgado, Rosa M.Vázquez Ramió, H.Abramo, L. R.Alcaniz, JailsonBenítez, NarcisoBonoli, SilviaCarneiro, SauloCenarro, A. J.Cristóbal-Hornillos, DavidDupke, Renato A.Hernández-Monteagudo, CarlosMarín-Franch, AntonioMendes de Oliveira, ClaudiaMoles, MarianoSodré Jr., L.Taylor, KeithVarela, JesúsGalaxies: activeGalaxies: evolutionGalaxies: high-redshiftGalaxies: interactionsIntergalactic mediumQuasars: emission linesWe report the discovery of a massive Ly nebula (potentially largest ever discovered), RaJav, at z = 2:25, associated with a quasar pair: the bright SDSS J162029.07+433451.1 (hereafter J1620+4334) and the faint newly discovered quasar JPAS-9600-10844, at 2.265 0.021 using the early data release (17 deg2) of the Javalambre Physics of the Accelerating Universe Astrophysical Survey (J-PAS). The quasar JPAS-9600-10844 embedded in the nebula is located at 60.2 kpc (7.300) from J1620+4334, and shows a compact structure with broad emission lines (>3000 km/s), typical of active galactic nuclei (i.e., Ly 1216 and CIV 1548). At a 2 surface brightness (SB) contour of 1:86 10-16 erg s-1 cm-2 arcsec-2, the nebula extends beyond 100 kpc and has a total Ly luminosity of 5:8 0:7 1044 erg s-1 which signifies the presence of an enormous Ly nebula (ELAN). The nebula traces an overdensity of quasars at a redshift of 2.2–2.3 consistent with the progenitor of a massive galaxy cluster. The extended CIV emission with luminosity of 3:7 0:5 1044 erg s-1 indicates that the circumgalactic medium (CGM) is metal-enriched and not primordial. The current J-PAS observations suggest photoionization and shocks due to outflows as possible ionization mechanisms. The faint extended far-UV and near-UV continuum emission likely points to ongoing star formation around the two quasars, suggesting a complex interaction in their environments. These findings provide new insights into the environment of quasars and their role in shaping the dynamics and evolution of the CGM at cosmic noon. Further spectroscopic observations will be required to fully characterize the object’s nature and its kinematic properties. This study demonstrates the unique capability of J-PAS to detect massive and rare Ly nebulae, providing new insights into their properties, environments, and connections to large-scale structures in the cosmic web such as filaments and overdensities in a large cosmological volume.RPT thanks the European Union – NextGenerationEU through the Recovery and Resilience Facility program (RRF) Planes Complementarios con las CCAA de Astrofísica y Física de Altas Energías – LA4. This paper has gone through internal review by the J-PAS collaboration. RPT thanks Ana and Ivan for their suggestions. Based on observations made with the JST250 telescope and JPCam camera for the J-PAS project at the OAJ, in Teruel, owned, managed, and operated by CEFCA. We acknowledge the OAJ Data Proc. & Arch. Unit (UPAD) for reducing and calibrating the OAJ data used in this work. Funding for the J-PAS Project has been provided by the Governments of Spain and Aragón through the Fondo de Inversiones de Teruel; the Aragonese Government through the Research Groups E96, E103, E16_17R, E16_20R, and E16_23R; the Spanish Ministry of Science and Innovation (MCIN/AEI/10.13039/501100011033 y FEDER, Una manera de hacer Europa) with grants PID2021-124918NB-C41, PID2021-124918NB-C42, PID2021-124918NA-C43, and PID2021-124918NB-C44; the Spanish Ministry of Science, Innovation and Universities (MCIU/AEI/FEDER, EU) with grants PGC2018-097585-B-C21 and PGC2018-097585-B-C22; the Spanish Ministry of Economy and Competitiveness (MINECO) under AYA2015-66211-C2-1-P, AYA2015-66211-C2-2, and AYA2012-30789; and European FEDER funding (FCDD10-4E-867, FCDD13-4E-2685); the Brazilian agencies FINEP, FAPESP, FAPERJ and by the National Observatory of Brazil. Additional funding was provided by the Tartu Obs. and by the J-PAS Chinese Astron. Consortium. We acknowledges support from MICIU/AEI/10.13039/501100011033 for the projects: PID2023-149420NB-I00 (SDG), PID2023-147386NB-I00 (RA and AH), PID2022-141755NB-I00 (LADG, YJT, RGD), PID2022-136598NB-C32 (YJT) and Severo Ochoa grant CEX2021-001131-S (LADG, YJT, RGD). SDG thanks PROMETEO CIPROM/2023/21 (Generalitat Valenciana) and Project (VAL-JPAS) reference ASFAE/2022/025 (PRTR 2022, MICIU, EU NextGenerationEU and GV).With funding from the Spanish government through the "Severo Ochoa Centre of Excellence" accreditation (CEX2021-001131-S).Peer reviewedEDP SciencesEuropean CommissionGobierno de AragónFondo de Inversiones de TeruelMinisterio de Ciencia, Innovación y Universidades (España)Agencia Estatal de Investigación (España)Ministerio de Economía y Competitividad (España)Generalitat ValencianaFundação de Amparo à Pesquisa do Estado de São PauloFundações de Amparo à Pesquisa (Brasil)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202620262025info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/412321reponame:DIGITAL.CSIC. 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