The AGN-star formation connection: future prospects with JWST

The bulk of the stellar growth over cosmic time is dominated by IR-luminous galaxies at cosmic noon (z = 1–2), many of which harbor a hidden active galactic nucleus (AGN). We use state-of-the-art infrared color diagnostics, combining Spitzer and Herschel observations, to separate dust-obscured AGNs...

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Autor: Pérez González, Pablo Guillermo
Tipo de documento: artigo
Data de publicação:2017
País:España
Recursos:Universidad Complutense de Madrid (UCM)
Repositório:Docta Complutense
Idioma:inglês
OAI Identifier:oai:docta.ucm.es:20.500.14352/19130
Acesso em linha:https://hdl.handle.net/20.500.14352/19130
Access Level:Acceso aberto
Palavra-chave:52
Active galactic nuclei
Ultraluminous infrared galaxies
Spitzer-space-telescope
Mass-metallicity relation
Midinfrared spectroscopy
Forming galaxies
To 2
Submillimeter galaxies
Goods-Herschel
Host galaxies
Astrofísica
Astronomía (Física)
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oai_identifier_str oai:docta.ucm.es:20.500.14352/19130
network_acronym_str ES
network_name_str España
repository_id_str
spelling The AGN-star formation connection: future prospects with JWSTPérez González, Pablo Guillermo52Active galactic nucleiUltraluminous infrared galaxiesSpitzer-space-telescopeMass-metallicity relationMidinfrared spectroscopyForming galaxiesTo 2Submillimeter galaxiesGoods-HerschelHost galaxiesAstrofísicaAstronomía (Física)The bulk of the stellar growth over cosmic time is dominated by IR-luminous galaxies at cosmic noon (z = 1–2), many of which harbor a hidden active galactic nucleus (AGN). We use state-of-the-art infrared color diagnostics, combining Spitzer and Herschel observations, to separate dust-obscured AGNs from dusty star-forming galaxies (SFGs) in the CANDELS and COSMOS surveys. We calculate 24 μm counts of SFGs, AGN/star-forming “Composites,” and AGNs. AGNs and Composites dominate the counts above 0.8 mJy at 24 μm, and Composites form at least 25% of an IR sample even to faint detection limits. We develop methods to use the Mid-Infrared Instrument (MIRI) on JWST to identify dust-obscured AGNs and Composite galaxies from z ~ 1–2. With the sensitivity and spacing of MIRI filters, we will detect >4 times as many AGN hosts as with Spitzer/IRAC criteria. Any star formation rates based on the 7.7 μm PAH feature (likely to be applied to MIRI photometry) must be corrected for the contribution of the AGN, or the star formation rate will be overestimated by ∼35% for cases where the AGN provides half the IR luminosity and ∼50% when the AGN accounts for 90% of the luminosity. Finally, we demonstrate that our MIRI color technique can select AGNs with an Eddington ratio of λ_(Edd) ~ 0.01 and will identify AGN hosts with a higher specific star formation rate than X-ray techniques alone. JWST/MIRI will enable critical steps forward in identifying and understanding dust-obscured AGNs and the link to their host galaxies.IOP Publishing LtdUniversidad Complutense de Madrid20172017-11-1020172017-11-10journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/19130reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/191302026-06-02T12:44:21Z
dc.title.none.fl_str_mv The AGN-star formation connection: future prospects with JWST
title The AGN-star formation connection: future prospects with JWST
spellingShingle The AGN-star formation connection: future prospects with JWST
Pérez González, Pablo Guillermo
52
Active galactic nuclei
Ultraluminous infrared galaxies
Spitzer-space-telescope
Mass-metallicity relation
Midinfrared spectroscopy
Forming galaxies
To 2
Submillimeter galaxies
Goods-Herschel
Host galaxies
Astrofísica
Astronomía (Física)
title_short The AGN-star formation connection: future prospects with JWST
title_full The AGN-star formation connection: future prospects with JWST
title_fullStr The AGN-star formation connection: future prospects with JWST
title_full_unstemmed The AGN-star formation connection: future prospects with JWST
title_sort The AGN-star formation connection: future prospects with JWST
dc.creator.none.fl_str_mv Pérez González, Pablo Guillermo
author Pérez González, Pablo Guillermo
author_facet Pérez González, Pablo Guillermo
author_role author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 52
Active galactic nuclei
Ultraluminous infrared galaxies
Spitzer-space-telescope
Mass-metallicity relation
Midinfrared spectroscopy
Forming galaxies
To 2
Submillimeter galaxies
Goods-Herschel
Host galaxies
Astrofísica
Astronomía (Física)
topic 52
Active galactic nuclei
Ultraluminous infrared galaxies
Spitzer-space-telescope
Mass-metallicity relation
Midinfrared spectroscopy
Forming galaxies
To 2
Submillimeter galaxies
Goods-Herschel
Host galaxies
Astrofísica
Astronomía (Física)
description The bulk of the stellar growth over cosmic time is dominated by IR-luminous galaxies at cosmic noon (z = 1–2), many of which harbor a hidden active galactic nucleus (AGN). We use state-of-the-art infrared color diagnostics, combining Spitzer and Herschel observations, to separate dust-obscured AGNs from dusty star-forming galaxies (SFGs) in the CANDELS and COSMOS surveys. We calculate 24 μm counts of SFGs, AGN/star-forming “Composites,” and AGNs. AGNs and Composites dominate the counts above 0.8 mJy at 24 μm, and Composites form at least 25% of an IR sample even to faint detection limits. We develop methods to use the Mid-Infrared Instrument (MIRI) on JWST to identify dust-obscured AGNs and Composite galaxies from z ~ 1–2. With the sensitivity and spacing of MIRI filters, we will detect >4 times as many AGN hosts as with Spitzer/IRAC criteria. Any star formation rates based on the 7.7 μm PAH feature (likely to be applied to MIRI photometry) must be corrected for the contribution of the AGN, or the star formation rate will be overestimated by ∼35% for cases where the AGN provides half the IR luminosity and ∼50% when the AGN accounts for 90% of the luminosity. Finally, we demonstrate that our MIRI color technique can select AGNs with an Eddington ratio of λ_(Edd) ~ 0.01 and will identify AGN hosts with a higher specific star formation rate than X-ray techniques alone. JWST/MIRI will enable critical steps forward in identifying and understanding dust-obscured AGNs and the link to their host galaxies.
publishDate 2017
dc.date.none.fl_str_mv 2017
2017-11-10
2017
2017-11-10
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/19130
url https://hdl.handle.net/20.500.14352/19130
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv IOP Publishing Ltd
publisher.none.fl_str_mv IOP Publishing Ltd
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300724

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