TY - JOUR
T1 - The DEEP2 galaxy redshift survey
T2 - AEGIS observations of a dual AGN at z = 0.7
AU - Gerke, Brian F.
AU - Newman, Jeffrey A.
AU - Lotz, Jennifer
AU - Yan, Renbin
AU - Barmey, P.
AU - Coil, Alison L.
AU - Conselice, Christopher J.
AU - Ivision, R. J.
AU - Lin, Lihwai
AU - Koo, David C.
AU - Nandra, Kirpal
AU - Salim, Samir
AU - Small, Todd
AU - Weiner, Benjamin J.
AU - Cooper, Michael C.
AU - Davis, Marc
AU - Faber, S. M.
AU - Guhathakurta, Puragra
PY - 2007/5/1
Y1 - 2007/5/1
N2 - We present evidence of 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 MB = -21.0 (AB, with h = 0.7) and rest-frame color U - B = 1.38. Its optical spectrum shows strong, double-peaked [O III ] emission lines and weak Hβ emission, with Seyfert-like line ratios. The two narrow peaks are separated 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 confirms the identification of a dust-obscured AGN in an early-type galaxy, with detections in X-ray, optical, infrared, and radio wave bands. These data are most readily explained as a single galaxy harboring two AGNs-the first such system to be observed in an otherwise typical early-type galaxy.
AB - We present evidence of 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 MB = -21.0 (AB, with h = 0.7) and rest-frame color U - B = 1.38. Its optical spectrum shows strong, double-peaked [O III ] emission lines and weak Hβ emission, with Seyfert-like line ratios. The two narrow peaks are separated 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 confirms the identification of a dust-obscured AGN in an early-type galaxy, with detections in X-ray, optical, infrared, and radio wave bands. These data are most readily explained as a single galaxy harboring two AGNs-the first such system to be observed in an otherwise typical early-type galaxy.
KW - Galaxies: active
KW - Galaxies: nuclei
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U2 - 10.1086/517968
DO - 10.1086/517968
M3 - Article
AN - SCOPUS:34249073740
SN - 0004-637X
VL - 660
SP - L23-L26
JO - Astrophysical Journal
JF - Astrophysical Journal
IS - 1 II
ER -