Chemical abundances along the quasar main sequence

Context. The main sequence of quasars has emerged as a powerful tool for organizing the observational and physical characteristics of type-1 active galactic nuclei (AGNs).

Detalles Bibliográficos
Autores: Floris, A., Marziani, P., Panda, S., Sniegowska, M., D'Onofrio, Mauro, Deconto Machado, Alice, Olmo, Ascensión del, Czerny, B.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2024
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/372505
Acceso en línea:http://hdl.handle.net/10261/372505
Access Level:acceso abierto
Palabra clave:Methods: observational
Galaxies: active
Quasars: emission lines
Quasars: general
Quasars: supermassive black holes
Galaxies: Seyfert
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dc.title.none.fl_str_mv Chemical abundances along the quasar main sequence
title Chemical abundances along the quasar main sequence
spellingShingle Chemical abundances along the quasar main sequence
Floris, A.
Methods: observational
Galaxies: active
Quasars: emission lines
Quasars: general
Quasars: supermassive black holes
Galaxies: Seyfert
title_short Chemical abundances along the quasar main sequence
title_full Chemical abundances along the quasar main sequence
title_fullStr Chemical abundances along the quasar main sequence
title_full_unstemmed Chemical abundances along the quasar main sequence
title_sort Chemical abundances along the quasar main sequence
dc.creator.none.fl_str_mv Floris, A.
Marziani, P.
Panda, S.
Panda, S.
Sniegowska, M.
D'Onofrio, Mauro
Deconto Machado, Alice
Olmo, Ascensión del
Czerny, B.
author Floris, A.
author_facet Floris, A.
Marziani, P.
Panda, S.
Sniegowska, M.
D'Onofrio, Mauro
Deconto Machado, Alice
Olmo, Ascensión del
Czerny, B.
author_role author
author2 Marziani, P.
Panda, S.
Sniegowska, M.
D'Onofrio, Mauro
Deconto Machado, Alice
Olmo, Ascensión del
Czerny, B.
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia e Innovación (España)
Conselho Nacional de Desenvolvimento Científico e Tecnológico (Brasil)
European Commission
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Methods: observational
Galaxies: active
Quasars: emission lines
Quasars: general
Quasars: supermassive black holes
Galaxies: Seyfert
topic Methods: observational
Galaxies: active
Quasars: emission lines
Quasars: general
Quasars: supermassive black holes
Galaxies: Seyfert
description Context. The main sequence of quasars has emerged as a powerful tool for organizing the observational and physical characteristics of type-1 active galactic nuclei (AGNs).
publishDate 2024
dc.date.none.fl_str_mv 2024
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
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dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/372505
url http://hdl.handle.net/10261/372505
dc.language.none.fl_str_mv Inglés
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info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/CEX2021- 515001131-S
http://dx.doi.org/10.1051/0004-6361/202450458
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dc.publisher.none.fl_str_mv EDP Sciences
publisher.none.fl_str_mv EDP Sciences
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
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spelling Chemical abundances along the quasar main sequenceFloris, A.Marziani, P.Panda, S.Panda, S.Sniegowska, M.D'Onofrio, MauroDeconto Machado, AliceOlmo, Ascensión delCzerny, B.Methods: observationalGalaxies: activeQuasars: emission linesQuasars: generalQuasars: supermassive black holesGalaxies: SeyfertContext. The main sequence of quasars has emerged as a powerful tool for organizing the observational and physical characteristics of type-1 active galactic nuclei (AGNs).Aims. In this study, we present a comprehensive analysis of the metallicity of the gas in the broad-line region, incorporating both new data and previously published findings, to assess the presence of any trend along the main sequence.Methods. We performed a multicomponent analysis on the strongest ultraviolet (UV) and optical emission lines for a sample of 13 radio quiet quasars in the 0.009 ≤ z ≤ 0.472 redshift range, selected based on the availability of multiwavelength data. We employed UV and optical data obtained from the Hubble Space Telescope (mainly from the Cosmic Origins Spectrograph and Faint Object Spectrograph) and several ground-based observatories, respectively. We then measured ten diagnostic ratios and compared them with the prediction of CLOUDY photoionization simulations, identifying the closest photoionization solution to the data.Results. Our investigation reveals a consistent pattern along the main sequence. We observe a systematic progression in metallicity, ranging from subsolar values to metallicity levels several times higher than solar values.Conclusions. These findings underscore the fundamental role of metallicity in correlating with the main sequence of quasars. Extreme metallicity values, at least several dozen times the solar metallicity, are confirmed in low-z AGNs radiating at a high Eddington ratio, although the origin of the extreme enrichment remains open to debate. © The Authors 2024.We thank Pu Du, Jian-Min Wang and Chen Hu for providing us with the tentative value of the time-delay of Hβ for PG 1259+593. SP acknowledges the financial support of the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Fellowships 300936/2023-0 and 301628/2024-6. The authors would like to thank Dr. Jaime Perea for his useful comments and for his help and generous allocation of computing time on hypercat and idilico at IAA (CSIC). A.D.M. and A.d.O. acknowledge financial support from the Spanish MCIU through project PID2022-140871NB-C21 by “ERDF A way of making Europe” and the Severo Ochoa grant CEX2021- 515001131-S funded by MCIN/AEI/10.13039/501100011033. This research is based in part on observations made with the NASA/ESA Hubble Space Telescope obtained from the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555. These observations are associated with programs 2424, 3418, 4045, 4210, 5182, 5486, 6766, 6781, 9894, 12212, 12604, 12916, 13811, 13814, 14481, 15669 and 16301. Some of the data presented in this paper were obtained from the Multimission Archive at the Space Telescope Science Institute (MAST). STScI is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS5-26555.With funding from the Spanish government through the "Severo Ochoa Centre of Excellence" accreditation (CEX2021-001131-S).Peer reviewedEDP SciencesMinisterio de Ciencia e Innovación (España)Conselho Nacional de Desenvolvimento Científico e Tecnológico (Brasil)European CommissionConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202420242024info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/372505reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2022-140871NB-C21info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/CEX2021- 515001131-Shttp://dx.doi.org/10.1051/0004-6361/202450458Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3725052026-05-22T06:33:51Z
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