The DEEP2 Galaxy Redshift Survey: AEGIS observations of a Dual AGNat z = 0.7

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We present evidence for a dual Active Galactic Nucleus (AGN) within an early-type galaxy at z = 0.709 in the Extended Groth Strip. The galaxy lies on the red sequence, with absolute magnitude M{sub B} = -21.0 ( AB, w , with h = 0 0.7) and rest-frame color U - B = 1.38. Its optical spectrum shows strong, double-peaked [O III] emission lines and weak H{beta} emission, with Seyfert-like line ratios. The two narrow peaks are separate by 630 km s-1 in velocity and arise from two distinct regions, spatially resolved in the DEIMOS spectrum, with a projected physical ... continued below

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Gerke1, Brian F.; Newman, Jeffrey A.; Lotz, Jennifer; Yan,Renbin; Barmby, P.; Coil, Alison L. et al. October 13, 2006.

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We present evidence for a dual Active Galactic Nucleus (AGN) within an early-type galaxy at z = 0.709 in the Extended Groth Strip. The galaxy lies on the red sequence, with absolute magnitude M{sub B} = -21.0 ( AB, w , with h = 0 0.7) and rest-frame color U - B = 1.38. Its optical spectrum shows strong, double-peaked [O III] emission lines and weak H{beta} emission, with Seyfert-like line ratios. The two narrow peaks are separate by 630 km s-1 in velocity and arise from two distinct regions, spatially resolved in the DEIMOS spectrum, with a projected physical separation of 1.2 kpc. HST/ACS imaging shows an early-type (E/S0) galaxy with hints of disturbed structure, consistent with the remnant of a dissipationless merger. Multiwavelength photometric information from the AEGIS consortium confirm the identification of a dust-obscured AGN in an early-type galaxy, with detections in X-ray, optical, infrared and radio wavebands. These data are most readily explained as a single galaxy harboring two AGN--the first such system to be observed in an otherwise typical early-type galaxy.

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  • Journal Name: Astrophysical Journal Letters; Journal Volume: 660; Journal Issue: 1; Related Information: Journal Publication Date: 05/2007

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  • Report No.: LBNL--61756
  • Grant Number: DE-AC02-05CH11231
  • Grant Number: NASA:HST-HF-01165
  • Office of Scientific & Technical Information Report Number: 918486
  • Archival Resource Key: ark:/67531/metadc887018

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  • October 13, 2006

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  • Sept. 22, 2016, 2:13 a.m.

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  • Dec. 13, 2016, 8:56 p.m.

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Gerke1, Brian F.; Newman, Jeffrey A.; Lotz, Jennifer; Yan,Renbin; Barmby, P.; Coil, Alison L. et al. The DEEP2 Galaxy Redshift Survey: AEGIS observations of a Dual AGNat z = 0.7, article, October 13, 2006; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc887018/: accessed December 13, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.