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Eddington-limited Accretion in z ~ 2 WISE -selected Hot, Dust-obscured Galaxies

Journal Article · · The Astrophysical Journal (Online)
 [1];  [2];  [3];  [4];  [4];  [2];  [5];  [2];  [3];  [6];  [7];  [7];  [7];  [7];  [7]
  1. Chinese Academy of Sciences (CAS), Beijing (China)
  2. California Inst. of Technology (CalTech), Pasadena, CA (United States)
  3. Universidad Diego Portales, (Chile)
  4. Univ. of California, Los Angles, CA (United States)
  5. Univ. of Leicester (United Kingdom)
  6. The Ohio State Univ., Columbus, OH (United States)
  7. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Hot, dust-obscured galaxies, or "Hot DOGs," are a rare, dusty, hyperluminous galaxy population discovered by the WISE mission. Predominantly at redshifts 2–3, they include the most luminous known galaxies in the universe. Their high luminosities likely come from accretion onto highly obscured supermassive black holes (SMBHs). We have conducted a pilot survey to measure the SMBH masses of five $$z\sim 2$$ Hot DOGs via broad Hα emission lines, using Keck/MOSFIRE and Gemini/FLAMINGOS-2. We detect broad Hα emission in all five Hot DOGs. We find substantial corresponding SMBH masses for these Hot DOGs ($$\sim {10}^{9}\,{M}_{\odot }$$), and their derived Eddington ratios are close to unity. These $$z\sim 2$$ Hot DOGs are the most luminous active galactic nuclei for their BH masses, suggesting that they are accreting at the maximum rates for their BHs. A similar property is found for known $$z\sim 6$$ quasars. Our results are consistent with scenarios in which Hot DOGs represent a transitional, high-accretion phase between obscured and unobscured quasars. Finally, Hot DOGs may mark a special evolutionary stage before the red quasar and optical quasar phases, and they may be present at other cosmic epochs.
Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Organization:
USDOE
OSTI ID:
1544053
Journal Information:
The Astrophysical Journal (Online), Journal Name: The Astrophysical Journal (Online) Journal Issue: 2 Vol. 852; ISSN 1538-4357
Publisher:
Institute of Physics (IOP)Copyright Statement
Country of Publication:
United States
Language:
English

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Quasar feedback and the origin of radio emission in radio-quiet quasars text January 2014
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An accreting pulsar with extreme properties drives an ultraluminous x-ray source in NGC 5907 text January 2016
The role of the most luminous, obscured AGN in galaxy assembly at z~2 text January 2017
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Cited By (15)

The environments of luminous radio-WISE selected infrared galaxies journal November 2018
[O iii] Emission line properties in a new sample of heavily reddened quasars at z > 2 journal May 2019
Host galaxies of high-redshift extremely red and obscured quasars journal July 2019
BAT AGN Spectroscopic Survey – XIII. The nature of the most luminous obscured AGN in the low-redshift universe journal August 2019
The Spectral Energy Distribution of the Hyperluminous, Hot Dust-obscured Galaxy W2246–0526 journal February 2018
Luminous WISE -selected Obscured, Unobscured, and Red Quasars in Stripe 82 journal June 2018
Polar Dust, Nuclear Obscuration, and IR SED Diversity in Type-1 AGNs journal October 2018
Super-Eddington Accretion in the WISE -selected Extremely Luminous Infrared Galaxy W2246−0526 journal November 2018
ALMA Reveals a Gas-rich, Maximum Starburst in the Hyperluminous, Dust-obscured Quasar W0533–3401 at z ∼ 2.9 journal December 2019
Spectral Classification and Ionized Gas Outflows in z ∼ 2 WISE -selected Hot Dust-obscured Galaxies journal January 2020
ALMA Detections of CO Emission in the Most Luminous, Heavily Dust-obscured Quasars at z > 3 journal March 2018
Luminous WISE-selected Obscured, Unobscured, and Red Quasars in Stripe 82 text January 2018
Polar Dust, Nuclear Obscuration and IR SED Diversity in Type-1 AGNs text January 2018
Host galaxies of high-redshift extremely red and obscured quasars text January 2019
BAT AGN Spectroscopic Survey -- XIII. The nature of the most luminous obscured AGN in the low-redshift universe text January 2019

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