CLEAR: Spatially Resolved Emission Lines and Active Galactic Nuclei at 0.6 < z < 1.3

We investigate spatially resolved emission-line ratios in a sample of 219 galaxies (0.6 < z < 1.3) detected using the G102 grism on the Hubble Space Telescope Wide Field Camera 3 taken as part of the CANDELS Ly α Emission at Reionization survey to measure ionization profiles and search for low...
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Autor*in:	Bren E. Backhaus [verfasserIn] Joanna S. Bridge [verfasserIn] Jonathan R. Trump [verfasserIn] Nikko J. Cleri [verfasserIn] Casey Papovich [verfasserIn] Raymond C. Simons [verfasserIn] Ivelina Momcheva [verfasserIn] Benne W. Holwerda [verfasserIn] Zhiyuan Ji [verfasserIn] Intae Jung [verfasserIn] Jasleen Matharu [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2023

Schlagwörter:	Galaxies Active galaxies Emission line galaxies

Übergeordnetes Werk:	In: The Astrophysical Journal - IOP Publishing, 2022, 943(2023), 1, p 37
Übergeordnetes Werk:	volume:943 ; year:2023 ; number:1, p 37

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3847/1538-4357/aca668

Katalog-ID:	DOAJ089167309

Internformat


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Indexfelder

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allfields	10.3847/1538-4357/aca668 doi (DE-627)DOAJ089167309 (DE-599)DOAJ5ee2637c94344274b555adace14f6626 DE-627 ger DE-627 rakwb eng QB460-466 Bren E. Backhaus verfasserin aut CLEAR: Spatially Resolved Emission Lines and Active Galactic Nuclei at 0.6 < z < 1.3 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We investigate spatially resolved emission-line ratios in a sample of 219 galaxies (0.6 < z < 1.3) detected using the G102 grism on the Hubble Space Telescope Wide Field Camera 3 taken as part of the CANDELS Ly α Emission at Reionization survey to measure ionization profiles and search for low-luminosity active galactic nuclei (AGN). We analyze [O iii ] and H β emission-line maps, enabling us to spatially resolve the [O iii ]/H β emission-line ratio across the galaxies in the sample. We compare the [O iii ]/H β ratio in galaxy centers and outer annular regions to measure ionization differences and investigate the potential of sources with nuclear ionization to host AGN. We investigate some of the individual galaxies that are candidates to host strong nuclear ionization and find that they often have low stellar mass and are undetected in X-rays, as expected for low-luminosity AGN in low-mass galaxies. We do not find evidence for a significant population of off-nuclear AGN or other clumps of off-nuclear ionization. We model the observed distribution of [O iii ]/H β spatial profiles and find that most galaxies are consistent with a small or zero difference between their nuclear and off-nuclear line ratios, but 6%–16% of galaxies in the sample are likely to host nuclear [O iii ]/H β that is ∼0.5 dex higher than in their outer regions. This study is limited by large uncertainties in most of the measured [O iii ]/H β spatial profiles; therefore, deeper data, e.g., from deeper HST/WFC3 programs or from JWST/NIRISS, are needed to more reliably measure the spatially resolved emission-line conditions of individual high-redshift galaxies. Galaxies Active galaxies Emission line galaxies Astrophysics Joanna S. Bridge verfasserin aut Jonathan R. Trump verfasserin aut Nikko J. Cleri verfasserin aut Casey Papovich verfasserin aut Raymond C. Simons verfasserin aut Ivelina Momcheva verfasserin aut Benne W. Holwerda verfasserin aut Zhiyuan Ji verfasserin aut Intae Jung verfasserin aut Jasleen Matharu verfasserin aut In The Astrophysical Journal IOP Publishing, 2022 943(2023), 1, p 37 (DE-627)269019219 (DE-600)1473835-1 15384357 nnns volume:943 year:2023 number:1, p 37 https://doi.org/10.3847/1538-4357/aca668 kostenfrei https://doaj.org/article/5ee2637c94344274b555adace14f6626 kostenfrei https://doi.org/10.3847/1538-4357/aca668 kostenfrei https://doaj.org/toc/1538-4357 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2014 GBV_ILN_2088 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 943 2023 1, p 37
spelling	10.3847/1538-4357/aca668 doi (DE-627)DOAJ089167309 (DE-599)DOAJ5ee2637c94344274b555adace14f6626 DE-627 ger DE-627 rakwb eng QB460-466 Bren E. Backhaus verfasserin aut CLEAR: Spatially Resolved Emission Lines and Active Galactic Nuclei at 0.6 < z < 1.3 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We investigate spatially resolved emission-line ratios in a sample of 219 galaxies (0.6 < z < 1.3) detected using the G102 grism on the Hubble Space Telescope Wide Field Camera 3 taken as part of the CANDELS Ly α Emission at Reionization survey to measure ionization profiles and search for low-luminosity active galactic nuclei (AGN). We analyze [O iii ] and H β emission-line maps, enabling us to spatially resolve the [O iii ]/H β emission-line ratio across the galaxies in the sample. We compare the [O iii ]/H β ratio in galaxy centers and outer annular regions to measure ionization differences and investigate the potential of sources with nuclear ionization to host AGN. We investigate some of the individual galaxies that are candidates to host strong nuclear ionization and find that they often have low stellar mass and are undetected in X-rays, as expected for low-luminosity AGN in low-mass galaxies. We do not find evidence for a significant population of off-nuclear AGN or other clumps of off-nuclear ionization. We model the observed distribution of [O iii ]/H β spatial profiles and find that most galaxies are consistent with a small or zero difference between their nuclear and off-nuclear line ratios, but 6%–16% of galaxies in the sample are likely to host nuclear [O iii ]/H β that is ∼0.5 dex higher than in their outer regions. This study is limited by large uncertainties in most of the measured [O iii ]/H β spatial profiles; therefore, deeper data, e.g., from deeper HST/WFC3 programs or from JWST/NIRISS, are needed to more reliably measure the spatially resolved emission-line conditions of individual high-redshift galaxies. Galaxies Active galaxies Emission line galaxies Astrophysics Joanna S. Bridge verfasserin aut Jonathan R. Trump verfasserin aut Nikko J. Cleri verfasserin aut Casey Papovich verfasserin aut Raymond C. Simons verfasserin aut Ivelina Momcheva verfasserin aut Benne W. Holwerda verfasserin aut Zhiyuan Ji verfasserin aut Intae Jung verfasserin aut Jasleen Matharu verfasserin aut In The Astrophysical Journal IOP Publishing, 2022 943(2023), 1, p 37 (DE-627)269019219 (DE-600)1473835-1 15384357 nnns volume:943 year:2023 number:1, p 37 https://doi.org/10.3847/1538-4357/aca668 kostenfrei https://doaj.org/article/5ee2637c94344274b555adace14f6626 kostenfrei https://doi.org/10.3847/1538-4357/aca668 kostenfrei https://doaj.org/toc/1538-4357 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2014 GBV_ILN_2088 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 943 2023 1, p 37
allfields_unstemmed	10.3847/1538-4357/aca668 doi (DE-627)DOAJ089167309 (DE-599)DOAJ5ee2637c94344274b555adace14f6626 DE-627 ger DE-627 rakwb eng QB460-466 Bren E. Backhaus verfasserin aut CLEAR: Spatially Resolved Emission Lines and Active Galactic Nuclei at 0.6 < z < 1.3 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We investigate spatially resolved emission-line ratios in a sample of 219 galaxies (0.6 < z < 1.3) detected using the G102 grism on the Hubble Space Telescope Wide Field Camera 3 taken as part of the CANDELS Ly α Emission at Reionization survey to measure ionization profiles and search for low-luminosity active galactic nuclei (AGN). We analyze [O iii ] and H β emission-line maps, enabling us to spatially resolve the [O iii ]/H β emission-line ratio across the galaxies in the sample. We compare the [O iii ]/H β ratio in galaxy centers and outer annular regions to measure ionization differences and investigate the potential of sources with nuclear ionization to host AGN. We investigate some of the individual galaxies that are candidates to host strong nuclear ionization and find that they often have low stellar mass and are undetected in X-rays, as expected for low-luminosity AGN in low-mass galaxies. We do not find evidence for a significant population of off-nuclear AGN or other clumps of off-nuclear ionization. We model the observed distribution of [O iii ]/H β spatial profiles and find that most galaxies are consistent with a small or zero difference between their nuclear and off-nuclear line ratios, but 6%–16% of galaxies in the sample are likely to host nuclear [O iii ]/H β that is ∼0.5 dex higher than in their outer regions. This study is limited by large uncertainties in most of the measured [O iii ]/H β spatial profiles; therefore, deeper data, e.g., from deeper HST/WFC3 programs or from JWST/NIRISS, are needed to more reliably measure the spatially resolved emission-line conditions of individual high-redshift galaxies. Galaxies Active galaxies Emission line galaxies Astrophysics Joanna S. Bridge verfasserin aut Jonathan R. Trump verfasserin aut Nikko J. Cleri verfasserin aut Casey Papovich verfasserin aut Raymond C. Simons verfasserin aut Ivelina Momcheva verfasserin aut Benne W. Holwerda verfasserin aut Zhiyuan Ji verfasserin aut Intae Jung verfasserin aut Jasleen Matharu verfasserin aut In The Astrophysical Journal IOP Publishing, 2022 943(2023), 1, p 37 (DE-627)269019219 (DE-600)1473835-1 15384357 nnns volume:943 year:2023 number:1, p 37 https://doi.org/10.3847/1538-4357/aca668 kostenfrei https://doaj.org/article/5ee2637c94344274b555adace14f6626 kostenfrei https://doi.org/10.3847/1538-4357/aca668 kostenfrei https://doaj.org/toc/1538-4357 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2014 GBV_ILN_2088 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 943 2023 1, p 37
allfieldsGer	10.3847/1538-4357/aca668 doi (DE-627)DOAJ089167309 (DE-599)DOAJ5ee2637c94344274b555adace14f6626 DE-627 ger DE-627 rakwb eng QB460-466 Bren E. Backhaus verfasserin aut CLEAR: Spatially Resolved Emission Lines and Active Galactic Nuclei at 0.6 < z < 1.3 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We investigate spatially resolved emission-line ratios in a sample of 219 galaxies (0.6 < z < 1.3) detected using the G102 grism on the Hubble Space Telescope Wide Field Camera 3 taken as part of the CANDELS Ly α Emission at Reionization survey to measure ionization profiles and search for low-luminosity active galactic nuclei (AGN). We analyze [O iii ] and H β emission-line maps, enabling us to spatially resolve the [O iii ]/H β emission-line ratio across the galaxies in the sample. We compare the [O iii ]/H β ratio in galaxy centers and outer annular regions to measure ionization differences and investigate the potential of sources with nuclear ionization to host AGN. We investigate some of the individual galaxies that are candidates to host strong nuclear ionization and find that they often have low stellar mass and are undetected in X-rays, as expected for low-luminosity AGN in low-mass galaxies. We do not find evidence for a significant population of off-nuclear AGN or other clumps of off-nuclear ionization. We model the observed distribution of [O iii ]/H β spatial profiles and find that most galaxies are consistent with a small or zero difference between their nuclear and off-nuclear line ratios, but 6%–16% of galaxies in the sample are likely to host nuclear [O iii ]/H β that is ∼0.5 dex higher than in their outer regions. This study is limited by large uncertainties in most of the measured [O iii ]/H β spatial profiles; therefore, deeper data, e.g., from deeper HST/WFC3 programs or from JWST/NIRISS, are needed to more reliably measure the spatially resolved emission-line conditions of individual high-redshift galaxies. Galaxies Active galaxies Emission line galaxies Astrophysics Joanna S. Bridge verfasserin aut Jonathan R. Trump verfasserin aut Nikko J. Cleri verfasserin aut Casey Papovich verfasserin aut Raymond C. Simons verfasserin aut Ivelina Momcheva verfasserin aut Benne W. Holwerda verfasserin aut Zhiyuan Ji verfasserin aut Intae Jung verfasserin aut Jasleen Matharu verfasserin aut In The Astrophysical Journal IOP Publishing, 2022 943(2023), 1, p 37 (DE-627)269019219 (DE-600)1473835-1 15384357 nnns volume:943 year:2023 number:1, p 37 https://doi.org/10.3847/1538-4357/aca668 kostenfrei https://doaj.org/article/5ee2637c94344274b555adace14f6626 kostenfrei https://doi.org/10.3847/1538-4357/aca668 kostenfrei https://doaj.org/toc/1538-4357 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2014 GBV_ILN_2088 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 943 2023 1, p 37
allfieldsSound	10.3847/1538-4357/aca668 doi (DE-627)DOAJ089167309 (DE-599)DOAJ5ee2637c94344274b555adace14f6626 DE-627 ger DE-627 rakwb eng QB460-466 Bren E. Backhaus verfasserin aut CLEAR: Spatially Resolved Emission Lines and Active Galactic Nuclei at 0.6 < z < 1.3 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We investigate spatially resolved emission-line ratios in a sample of 219 galaxies (0.6 < z < 1.3) detected using the G102 grism on the Hubble Space Telescope Wide Field Camera 3 taken as part of the CANDELS Ly α Emission at Reionization survey to measure ionization profiles and search for low-luminosity active galactic nuclei (AGN). We analyze [O iii ] and H β emission-line maps, enabling us to spatially resolve the [O iii ]/H β emission-line ratio across the galaxies in the sample. We compare the [O iii ]/H β ratio in galaxy centers and outer annular regions to measure ionization differences and investigate the potential of sources with nuclear ionization to host AGN. We investigate some of the individual galaxies that are candidates to host strong nuclear ionization and find that they often have low stellar mass and are undetected in X-rays, as expected for low-luminosity AGN in low-mass galaxies. We do not find evidence for a significant population of off-nuclear AGN or other clumps of off-nuclear ionization. We model the observed distribution of [O iii ]/H β spatial profiles and find that most galaxies are consistent with a small or zero difference between their nuclear and off-nuclear line ratios, but 6%–16% of galaxies in the sample are likely to host nuclear [O iii ]/H β that is ∼0.5 dex higher than in their outer regions. This study is limited by large uncertainties in most of the measured [O iii ]/H β spatial profiles; therefore, deeper data, e.g., from deeper HST/WFC3 programs or from JWST/NIRISS, are needed to more reliably measure the spatially resolved emission-line conditions of individual high-redshift galaxies. Galaxies Active galaxies Emission line galaxies Astrophysics Joanna S. Bridge verfasserin aut Jonathan R. Trump verfasserin aut Nikko J. Cleri verfasserin aut Casey Papovich verfasserin aut Raymond C. Simons verfasserin aut Ivelina Momcheva verfasserin aut Benne W. Holwerda verfasserin aut Zhiyuan Ji verfasserin aut Intae Jung verfasserin aut Jasleen Matharu verfasserin aut In The Astrophysical Journal IOP Publishing, 2022 943(2023), 1, p 37 (DE-627)269019219 (DE-600)1473835-1 15384357 nnns volume:943 year:2023 number:1, p 37 https://doi.org/10.3847/1538-4357/aca668 kostenfrei https://doaj.org/article/5ee2637c94344274b555adace14f6626 kostenfrei https://doi.org/10.3847/1538-4357/aca668 kostenfrei https://doaj.org/toc/1538-4357 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2014 GBV_ILN_2088 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 943 2023 1, p 37
language	English
source	In The Astrophysical Journal 943(2023), 1, p 37 volume:943 year:2023 number:1, p 37
sourceStr	In The Astrophysical Journal 943(2023), 1, p 37 volume:943 year:2023 number:1, p 37
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	Galaxies Active galaxies Emission line galaxies Astrophysics
isfreeaccess_bool	true
container_title	The Astrophysical Journal
authorswithroles_txt_mv	Bren E. Backhaus @@aut@@ Joanna S. Bridge @@aut@@ Jonathan R. Trump @@aut@@ Nikko J. Cleri @@aut@@ Casey Papovich @@aut@@ Raymond C. Simons @@aut@@ Ivelina Momcheva @@aut@@ Benne W. Holwerda @@aut@@ Zhiyuan Ji @@aut@@ Intae Jung @@aut@@ Jasleen Matharu @@aut@@
publishDateDaySort_date	2023-01-01T00:00:00Z
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issn	15384357
topic_title	QB460-466 CLEAR: Spatially Resolved Emission Lines and Active Galactic Nuclei at 0.6 < z < 1.3 Galaxies Active galaxies Emission line galaxies
topic	misc QB460-466 misc Galaxies misc Active galaxies misc Emission line galaxies misc Astrophysics
topic_unstemmed	misc QB460-466 misc Galaxies misc Active galaxies misc Emission line galaxies misc Astrophysics
topic_browse	misc QB460-466 misc Galaxies misc Active galaxies misc Emission line galaxies misc Astrophysics
format_facet	Elektronische Aufsätze Aufsätze Elektronische Ressource
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title	CLEAR: Spatially Resolved Emission Lines and Active Galactic Nuclei at 0.6 < z < 1.3
ctrlnum	(DE-627)DOAJ089167309 (DE-599)DOAJ5ee2637c94344274b555adace14f6626
title_full	CLEAR: Spatially Resolved Emission Lines and Active Galactic Nuclei at 0.6 < z < 1.3
author_sort	Bren E. Backhaus
journal	The Astrophysical Journal
journalStr	The Astrophysical Journal
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author_browse	Bren E. Backhaus Joanna S. Bridge Jonathan R. Trump Nikko J. Cleri Casey Papovich Raymond C. Simons Ivelina Momcheva Benne W. Holwerda Zhiyuan Ji Intae Jung Jasleen Matharu
container_volume	943
class	QB460-466
format_se	Elektronische Aufsätze
author-letter	Bren E. Backhaus
doi_str_mv	10.3847/1538-4357/aca668
author2-role	verfasserin
title_sort	clear: spatially resolved emission lines and active galactic nuclei at 0.6 < z < 1.3
callnumber	QB460-466
title_auth	CLEAR: Spatially Resolved Emission Lines and Active Galactic Nuclei at 0.6 < z < 1.3
abstract	We investigate spatially resolved emission-line ratios in a sample of 219 galaxies (0.6 < z < 1.3) detected using the G102 grism on the Hubble Space Telescope Wide Field Camera 3 taken as part of the CANDELS Ly α Emission at Reionization survey to measure ionization profiles and search for low-luminosity active galactic nuclei (AGN). We analyze [O iii ] and H β emission-line maps, enabling us to spatially resolve the [O iii ]/H β emission-line ratio across the galaxies in the sample. We compare the [O iii ]/H β ratio in galaxy centers and outer annular regions to measure ionization differences and investigate the potential of sources with nuclear ionization to host AGN. We investigate some of the individual galaxies that are candidates to host strong nuclear ionization and find that they often have low stellar mass and are undetected in X-rays, as expected for low-luminosity AGN in low-mass galaxies. We do not find evidence for a significant population of off-nuclear AGN or other clumps of off-nuclear ionization. We model the observed distribution of [O iii ]/H β spatial profiles and find that most galaxies are consistent with a small or zero difference between their nuclear and off-nuclear line ratios, but 6%–16% of galaxies in the sample are likely to host nuclear [O iii ]/H β that is ∼0.5 dex higher than in their outer regions. This study is limited by large uncertainties in most of the measured [O iii ]/H β spatial profiles; therefore, deeper data, e.g., from deeper HST/WFC3 programs or from JWST/NIRISS, are needed to more reliably measure the spatially resolved emission-line conditions of individual high-redshift galaxies.
abstractGer	We investigate spatially resolved emission-line ratios in a sample of 219 galaxies (0.6 < z < 1.3) detected using the G102 grism on the Hubble Space Telescope Wide Field Camera 3 taken as part of the CANDELS Ly α Emission at Reionization survey to measure ionization profiles and search for low-luminosity active galactic nuclei (AGN). We analyze [O iii ] and H β emission-line maps, enabling us to spatially resolve the [O iii ]/H β emission-line ratio across the galaxies in the sample. We compare the [O iii ]/H β ratio in galaxy centers and outer annular regions to measure ionization differences and investigate the potential of sources with nuclear ionization to host AGN. We investigate some of the individual galaxies that are candidates to host strong nuclear ionization and find that they often have low stellar mass and are undetected in X-rays, as expected for low-luminosity AGN in low-mass galaxies. We do not find evidence for a significant population of off-nuclear AGN or other clumps of off-nuclear ionization. We model the observed distribution of [O iii ]/H β spatial profiles and find that most galaxies are consistent with a small or zero difference between their nuclear and off-nuclear line ratios, but 6%–16% of galaxies in the sample are likely to host nuclear [O iii ]/H β that is ∼0.5 dex higher than in their outer regions. This study is limited by large uncertainties in most of the measured [O iii ]/H β spatial profiles; therefore, deeper data, e.g., from deeper HST/WFC3 programs or from JWST/NIRISS, are needed to more reliably measure the spatially resolved emission-line conditions of individual high-redshift galaxies.
abstract_unstemmed	We investigate spatially resolved emission-line ratios in a sample of 219 galaxies (0.6 < z < 1.3) detected using the G102 grism on the Hubble Space Telescope Wide Field Camera 3 taken as part of the CANDELS Ly α Emission at Reionization survey to measure ionization profiles and search for low-luminosity active galactic nuclei (AGN). We analyze [O iii ] and H β emission-line maps, enabling us to spatially resolve the [O iii ]/H β emission-line ratio across the galaxies in the sample. We compare the [O iii ]/H β ratio in galaxy centers and outer annular regions to measure ionization differences and investigate the potential of sources with nuclear ionization to host AGN. We investigate some of the individual galaxies that are candidates to host strong nuclear ionization and find that they often have low stellar mass and are undetected in X-rays, as expected for low-luminosity AGN in low-mass galaxies. We do not find evidence for a significant population of off-nuclear AGN or other clumps of off-nuclear ionization. We model the observed distribution of [O iii ]/H β spatial profiles and find that most galaxies are consistent with a small or zero difference between their nuclear and off-nuclear line ratios, but 6%–16% of galaxies in the sample are likely to host nuclear [O iii ]/H β that is ∼0.5 dex higher than in their outer regions. This study is limited by large uncertainties in most of the measured [O iii ]/H β spatial profiles; therefore, deeper data, e.g., from deeper HST/WFC3 programs or from JWST/NIRISS, are needed to more reliably measure the spatially resolved emission-line conditions of individual high-redshift galaxies.
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container_issue	1, p 37
title_short	CLEAR: Spatially Resolved Emission Lines and Active Galactic Nuclei at 0.6 < z < 1.3
url	https://doi.org/10.3847/1538-4357/aca668 https://doaj.org/article/5ee2637c94344274b555adace14f6626 https://doaj.org/toc/1538-4357
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author2	Joanna S. Bridge Jonathan R. Trump Nikko J. Cleri Casey Papovich Raymond C. Simons Ivelina Momcheva Benne W. Holwerda Zhiyuan Ji Intae Jung Jasleen Matharu
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up_date	2024-07-03T21:39:06.182Z
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