A Rapidly Accreting Active Galactic Nucleus Hidden in a Dust-obscured Galaxy at z ∼ 0.8
Dust-obscured galaxies (DOGs) containing central supermassive black holes (SMBHs) that are rapidly accreting (i.e., having high Eddington ratios, λ _Edd ) may represent a key phase closest to the peak of both the black hole and galaxy growth in the coevolution framework for SMBHs and galaxies. In th...
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IOP Publishing
2024-01-01
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| Series: | The Astrophysical Journal |
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| Online Access: | https://doi.org/10.3847/1538-4357/ad8c3f |
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| author | Nathan Cristello Fan Zou William N. Brandt Zhibo Yu Fabio Vito Shifu Zhu |
| author_facet | Nathan Cristello Fan Zou William N. Brandt Zhibo Yu Fabio Vito Shifu Zhu |
| author_sort | Nathan Cristello |
| collection | DOAJ |
| description | Dust-obscured galaxies (DOGs) containing central supermassive black holes (SMBHs) that are rapidly accreting (i.e., having high Eddington ratios, λ _Edd ) may represent a key phase closest to the peak of both the black hole and galaxy growth in the coevolution framework for SMBHs and galaxies. In this work, we present a 68 ks XMM-Newton observation of the high- λ _Edd DOG J1324+4501 at z ∼ 0.8, which was initially observed by Chandra. We analyze the XMM-Newton spectra jointly with archival Chandra spectra. In performing a detailed X-ray spectral analysis, we find that the source is intrinsically X-ray luminous with $\mathrm{log}({L}_{{\rm{X}}}$ /erg ${{\rm{s}}}^{-1})={44.71}_{-0.12}^{+0.08}$ and heavily obscured with $\mathrm{log}({N}_{{\rm{H}}}/{\mathrm{cm}}^{-2})={23.43}_{-0.13}^{+0.09}$ . We further utilize UV-to-IR archival photometry to measure and fit the source’s spectral energy distribution to estimate its host-galaxy properties. We present a supplementary comparison sample of 21 X-ray luminous DOGs from the XMM-SERVS survey with sufficient (>200) 0.5–10 keV counts to perform a similarly detailed X-ray spectral analysis. Of the X-ray luminous DOGs in our sample, we find that J1324+4501 is the most remarkable, possessing one of the highest X-ray luminosities, column densities, and star formation rates. We demonstrate that J1324+4501 is in an extreme evolutionary stage where SMBH accretion and galaxy growth are at their peaks. |
| format | Article |
| id | doaj-art-49b9da6b202748408e89b67a39e723e8 |
| institution | Kabale University |
| issn | 1538-4357 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | IOP Publishing |
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| series | The Astrophysical Journal |
| spelling | doaj-art-49b9da6b202748408e89b67a39e723e82024-12-06T08:05:57ZengIOP PublishingThe Astrophysical Journal1538-43572024-01-01977111310.3847/1538-4357/ad8c3fA Rapidly Accreting Active Galactic Nucleus Hidden in a Dust-obscured Galaxy at z ∼ 0.8Nathan Cristello0https://orcid.org/0000-0001-6317-8488Fan Zou1https://orcid.org/0000-0002-4436-6923William N. Brandt2https://orcid.org/0000-0002-0167-2453Zhibo Yu3https://orcid.org/0000-0002-6990-9058Fabio Vito4https://orcid.org/0000-0003-0680-9305Shifu Zhu5https://orcid.org/0000-0002-1653-4969Department of Astronomy and Astrophysics, 525 Davey Laboratory, The Pennsylvania State University , University Park, PA 16802, USA ; nathancristello@gmail.com, fanzou01@gmail.comDepartment of Astronomy and Astrophysics, 525 Davey Laboratory, The Pennsylvania State University , University Park, PA 16802, USA ; nathancristello@gmail.com, fanzou01@gmail.com; Department of Astronomy, University of Michigan , Ann Arbor, MI 48109, USA; Institute for Gravitation and the Cosmos, The Pennsylvania State University , University Park, PA 16802, USADepartment of Astronomy and Astrophysics, 525 Davey Laboratory, The Pennsylvania State University , University Park, PA 16802, USA ; nathancristello@gmail.com, fanzou01@gmail.com; Institute for Gravitation and the Cosmos, The Pennsylvania State University , University Park, PA 16802, USA; Department of Physics, 104 Davey Laboratory, The Pennsylvania State University , University Park, PA 16802, USADepartment of Astronomy and Astrophysics, 525 Davey Laboratory, The Pennsylvania State University , University Park, PA 16802, USA ; nathancristello@gmail.com, fanzou01@gmail.com; Institute for Gravitation and the Cosmos, The Pennsylvania State University , University Park, PA 16802, USAINAF-Osservatorio di Astrofisica e Scienza dello Spazio di Bologna , Via Gobetti 93/3, I-40129 Bologna, ItalyCAS Key Laboratory for Research in Galaxies and Cosmology, Department of Astronomy, University of Science and Technology of China , Hefei 230026, People's Republic of China; School of Astronomy and Space Sciences, University of Science and Technology of China , Hefei 230026, People's Republic of ChinaDust-obscured galaxies (DOGs) containing central supermassive black holes (SMBHs) that are rapidly accreting (i.e., having high Eddington ratios, λ _Edd ) may represent a key phase closest to the peak of both the black hole and galaxy growth in the coevolution framework for SMBHs and galaxies. In this work, we present a 68 ks XMM-Newton observation of the high- λ _Edd DOG J1324+4501 at z ∼ 0.8, which was initially observed by Chandra. We analyze the XMM-Newton spectra jointly with archival Chandra spectra. In performing a detailed X-ray spectral analysis, we find that the source is intrinsically X-ray luminous with $\mathrm{log}({L}_{{\rm{X}}}$ /erg ${{\rm{s}}}^{-1})={44.71}_{-0.12}^{+0.08}$ and heavily obscured with $\mathrm{log}({N}_{{\rm{H}}}/{\mathrm{cm}}^{-2})={23.43}_{-0.13}^{+0.09}$ . We further utilize UV-to-IR archival photometry to measure and fit the source’s spectral energy distribution to estimate its host-galaxy properties. We present a supplementary comparison sample of 21 X-ray luminous DOGs from the XMM-SERVS survey with sufficient (>200) 0.5–10 keV counts to perform a similarly detailed X-ray spectral analysis. Of the X-ray luminous DOGs in our sample, we find that J1324+4501 is the most remarkable, possessing one of the highest X-ray luminosities, column densities, and star formation rates. We demonstrate that J1324+4501 is in an extreme evolutionary stage where SMBH accretion and galaxy growth are at their peaks.https://doi.org/10.3847/1538-4357/ad8c3fActive galaxiesAGN host galaxiesX-ray active galactic nuclei |
| spellingShingle | Nathan Cristello Fan Zou William N. Brandt Zhibo Yu Fabio Vito Shifu Zhu A Rapidly Accreting Active Galactic Nucleus Hidden in a Dust-obscured Galaxy at z ∼ 0.8 The Astrophysical Journal Active galaxies AGN host galaxies X-ray active galactic nuclei |
| title | A Rapidly Accreting Active Galactic Nucleus Hidden in a Dust-obscured Galaxy at z ∼ 0.8 |
| title_full | A Rapidly Accreting Active Galactic Nucleus Hidden in a Dust-obscured Galaxy at z ∼ 0.8 |
| title_fullStr | A Rapidly Accreting Active Galactic Nucleus Hidden in a Dust-obscured Galaxy at z ∼ 0.8 |
| title_full_unstemmed | A Rapidly Accreting Active Galactic Nucleus Hidden in a Dust-obscured Galaxy at z ∼ 0.8 |
| title_short | A Rapidly Accreting Active Galactic Nucleus Hidden in a Dust-obscured Galaxy at z ∼ 0.8 |
| title_sort | rapidly accreting active galactic nucleus hidden in a dust obscured galaxy at z ∼ 0 8 |
| topic | Active galaxies AGN host galaxies X-ray active galactic nuclei |
| url | https://doi.org/10.3847/1538-4357/ad8c3f |
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