The DEEP2 Galaxy Redshift Survey: AEGIS observations of a Dual AGNat z = 0.7
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.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Director, Office of Science; National Aeronautics andSpace Administration
- DOE Contract Number:
- DE-AC02-05CH11231; NASA:HST-HF-01165
- OSTI ID:
- 918486
- Report Number(s):
- LBNL-61756; ASTLAI; R&D Project: PHFJN; BnR: 400409900; TRN: US0805836
- Journal Information:
- Astrophysical Journal Letters, Vol. 660, Issue 1; Related Information: Journal Publication Date: 05/2007; ISSN 0004-6388
- Country of Publication:
- United States
- Language:
- English
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