Resolving Galactic-scale Obscuration of X-Ray AGNs at z ≳ 1 with COSMOS-Web

A large fraction of the accreting supermassive black hole population is shrouded by copious amounts of gas and dust, particularly in the distant ( z ≳ 1) universe. While much of the obscuration is attributed to a parsec-scale torus, there is a known contribution from the larger-scale host galaxy. Us...

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Veröffentlicht in:Astrophysical journal. Letters 2023-07, Vol.951 (2), p.L41
Hauptverfasser: Silverman, John D., Mainieri, Vincenzo, Ding, Xuheng, Liu, Daizhong, Jahnke, Knud, Hirschmann, Michaela, Kartaltepe, Jeyhan, Lambrides, Erini, Onoue, Masafusa, Trakhtenbrot, Benny, Vardoulaki, Eleni, Bongiorno, Angela, Casey, Caitlin, Civano, Francesca, Faisst, Andreas, Franco, Maximilien, Gillman, Steven, Gozaliasl, Ghassem, Hayward, Christopher C., Koekemoer, Anton M., Kokorev, Vasily, Magdis, Georgios, Marchesi, Stefano, Rich, Robert Michael, Sparre, Martin, Suh, Hyewon, Tanaka, Takumi, Valentino, Francesco
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container_issue 2
container_start_page L41
container_title Astrophysical journal. Letters
container_volume 951
creator Silverman, John D.
Mainieri, Vincenzo
Ding, Xuheng
Liu, Daizhong
Jahnke, Knud
Hirschmann, Michaela
Kartaltepe, Jeyhan
Lambrides, Erini
Onoue, Masafusa
Trakhtenbrot, Benny
Vardoulaki, Eleni
Bongiorno, Angela
Casey, Caitlin
Civano, Francesca
Faisst, Andreas
Franco, Maximilien
Gillman, Steven
Gozaliasl, Ghassem
Hayward, Christopher C.
Koekemoer, Anton M.
Kokorev, Vasily
Magdis, Georgios
Marchesi, Stefano
Rich, Robert Michael
Sparre, Martin
Suh, Hyewon
Tanaka, Takumi
Valentino, Francesco
description A large fraction of the accreting supermassive black hole population is shrouded by copious amounts of gas and dust, particularly in the distant ( z ≳ 1) universe. While much of the obscuration is attributed to a parsec-scale torus, there is a known contribution from the larger-scale host galaxy. Using JWST/NIRCam imaging from the COSMOS-Web survey, we probe the galaxy-wide dust distribution in X-ray selected active galactic nuclei (AGNs) up to z ∼ 2. Here, we focus on a sample of three AGNs with their host galaxies exhibiting prominent dust lanes, potentially due to their edge-on alignment. These represent 27% (3 out of 11 with early NIRCam data) of the heavily obscured ( N H > 10 23 cm −2 ) AGN population. With limited signs of a central AGN in the optical and near-infrared, the NIRCam images are used to produce reddening maps E ( B − V ) of the host galaxies. We compare the mean central value of E ( B − V ) to the X-ray obscuring column density along the line of sight to the AGN ( N H ∼ 10 23−23.5 cm −2 ). We find that the extinction due to the host galaxy is present (0.6 ≲ E ( B − V ) ≲ 0.9; 1.9 ≲ A V ≲ 2.8) and significantly contributes to the X-ray obscuration at a level of N H ∼ 10 22.5 cm −2 assuming an SMC gas-to-dust ratio that amounts to ≲30% of the total obscuring column density. These early results, including three additional cases from CEERS, demonstrate the ability to resolve such dust structures with JWST and separate the different circumnuclear and galaxy-scale obscuring structures.
doi_str_mv 10.3847/2041-8213/acdef4
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Mainieri, Vincenzo ; Ding, Xuheng ; Liu, Daizhong ; Jahnke, Knud ; Hirschmann, Michaela ; Kartaltepe, Jeyhan ; Lambrides, Erini ; Onoue, Masafusa ; Trakhtenbrot, Benny ; Vardoulaki, Eleni ; Bongiorno, Angela ; Casey, Caitlin ; Civano, Francesca ; Faisst, Andreas ; Franco, Maximilien ; Gillman, Steven ; Gozaliasl, Ghassem ; Hayward, Christopher C. ; Koekemoer, Anton M. ; Kokorev, Vasily ; Magdis, Georgios ; Marchesi, Stefano ; Rich, Robert Michael ; Sparre, Martin ; Suh, Hyewon ; Tanaka, Takumi ; Valentino, Francesco</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c400t-67edfb55b2acdcc8f4b74a5a78963f1206d529c3d18a330f374436ba42fbcf843</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>Active galactic nuclei</topic><topic>AGN host galaxies</topic><topic>Black holes</topic><topic>Cosmic dust</topic><topic>Cosmos</topic><topic>Density</topic><topic>Deposition</topic><topic>Dust</topic><topic>Galactic and extragalactic astronomy</topic><topic>Galaxies</topic><topic>Galaxy distribution</topic><topic>Infrared astronomy</topic><topic>Infrared imagery</topic><topic>Occultation</topic><topic>Stars &amp; 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Letters</jtitle><stitle>APJL</stitle><addtitle>Astrophys. J. Lett</addtitle><date>2023-07-01</date><risdate>2023</risdate><volume>951</volume><issue>2</issue><spage>L41</spage><pages>L41-</pages><issn>2041-8205</issn><eissn>2041-8213</eissn><abstract>A large fraction of the accreting supermassive black hole population is shrouded by copious amounts of gas and dust, particularly in the distant ( z ≳ 1) universe. While much of the obscuration is attributed to a parsec-scale torus, there is a known contribution from the larger-scale host galaxy. Using JWST/NIRCam imaging from the COSMOS-Web survey, we probe the galaxy-wide dust distribution in X-ray selected active galactic nuclei (AGNs) up to z ∼ 2. Here, we focus on a sample of three AGNs with their host galaxies exhibiting prominent dust lanes, potentially due to their edge-on alignment. These represent 27% (3 out of 11 with early NIRCam data) of the heavily obscured ( N H &gt; 10 23 cm −2 ) AGN population. With limited signs of a central AGN in the optical and near-infrared, the NIRCam images are used to produce reddening maps E ( B − V ) of the host galaxies. We compare the mean central value of E ( B − V ) to the X-ray obscuring column density along the line of sight to the AGN ( N H ∼ 10 23−23.5 cm −2 ). We find that the extinction due to the host galaxy is present (0.6 ≲ E ( B − V ) ≲ 0.9; 1.9 ≲ A V ≲ 2.8) and significantly contributes to the X-ray obscuration at a level of N H ∼ 10 22.5 cm −2 assuming an SMC gas-to-dust ratio that amounts to ≲30% of the total obscuring column density. These early results, including three additional cases from CEERS, demonstrate the ability to resolve such dust structures with JWST and separate the different circumnuclear and galaxy-scale obscuring structures.</abstract><cop>Austin</cop><pub>The American Astronomical Society</pub><doi>10.3847/2041-8213/acdef4</doi><tpages>10</tpages><orcidid>https://orcid.org/0000-0003-0427-8387</orcidid><orcidid>https://orcid.org/0000-0003-3804-2137</orcidid><orcidid>https://orcid.org/0000-0002-0000-6977</orcidid><orcidid>https://orcid.org/0000-0001-9187-3605</orcidid><orcidid>https://orcid.org/0000-0001-8917-2148</orcidid><orcidid>https://orcid.org/0000-0003-2984-6803</orcidid><orcidid>https://orcid.org/0000-0002-3683-7297</orcidid><orcidid>https://orcid.org/0000-0002-6610-2048</orcidid><orcidid>https://orcid.org/0000-0001-9773-7479</orcidid><orcidid>https://orcid.org/0000-0003-4073-3236</orcidid><orcidid>https://orcid.org/0000-0002-9382-9832</orcidid><orcidid>https://orcid.org/0000-0001-9885-4589</orcidid><orcidid>https://orcid.org/0000-0001-6477-4011</orcidid><orcidid>https://orcid.org/0000-0002-2536-1633</orcidid><orcidid>https://orcid.org/0000-0002-3301-3321</orcidid><orcidid>https://orcid.org/0000-0002-0236-919X</orcidid><orcidid>https://orcid.org/0000-0001-5544-0749</orcidid><orcidid>https://orcid.org/0000-0002-4437-1773</orcidid><orcidid>https://orcid.org/0000-0002-5588-9156</orcidid><orcidid>https://orcid.org/0000-0002-1047-9583</orcidid><orcidid>https://orcid.org/0000-0002-0930-6466</orcidid><orcidid>https://orcid.org/0000-0002-2115-1137</orcidid><orcidid>https://orcid.org/0000-0002-3560-8599</orcidid><orcidid>https://orcid.org/0000-0003-3216-7190</orcidid><orcidid>https://orcid.org/0000-0002-4872-2294</orcidid><oa>free_for_read</oa></addata></record>
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identifier ISSN: 2041-8205
ispartof Astrophysical journal. Letters, 2023-07, Vol.951 (2), p.L41
issn 2041-8205
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subjects Active galactic nuclei
AGN host galaxies
Black holes
Cosmic dust
Cosmos
Density
Deposition
Dust
Galactic and extragalactic astronomy
Galaxies
Galaxy distribution
Infrared astronomy
Infrared imagery
Occultation
Stars & galaxies
Supermassive black holes
Toruses
X-ray active galactic nuclei
X-ray astronomy
X-rays
title Resolving Galactic-scale Obscuration of X-Ray AGNs at z ≳ 1 with COSMOS-Web
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