TY - JOUR
T1 - High resolution deep imaging of a bright radio quiet QSO at z ∼ 3
AU - Wang, Yi Ping
AU - He, Wei
AU - Yamada, Toru
AU - Tanaka, Ichi
AU - Iye, Masanori
AU - Ji, Tuo
N1 - Publisher Copyright:
© 2015 National Astronomical Observatories, Chinese Academy of Sciences and IOP Publishing Ltd.
PY - 2015/5/1
Y1 - 2015/5/1
N2 - We have obtained deep J and Ks-band images centered on a bright radio quiet QSO UM 402 (zem = 2.856) using the IRCS camera and adaptive optics systems that are part of the Subaru Telescope, as well as retrieved WFC3/F140W archive images of this object. A faint galaxy (mk = 23.32±0.05 in the Vega magnitude system) that lies ∼ 2.4″ north of the QSO sightline has been clearly resolved in all three deep high resolution datasets, and appears as an irregular galaxy with two close components in the Ks-band images (separation ∼ 0.3″). Given the small impact parameter (b = 19.6 kpc, at zlls = 2.531), as well as the red color of (J - Ks)Vega ∼ 1.6, it might be a candidate galaxy giving rise to the Lyman Limit system absorption at zabs = 2.531 seen in the QSO spectrum. After carefully subtracting the point spread function from the QSO images, the host galaxy of this bright radio quiet QSO at z ∼ 3 was marginally revealed. We placed a lower limit on the host component of mk ∼ 23.3 according to our analyses.
AB - We have obtained deep J and Ks-band images centered on a bright radio quiet QSO UM 402 (zem = 2.856) using the IRCS camera and adaptive optics systems that are part of the Subaru Telescope, as well as retrieved WFC3/F140W archive images of this object. A faint galaxy (mk = 23.32±0.05 in the Vega magnitude system) that lies ∼ 2.4″ north of the QSO sightline has been clearly resolved in all three deep high resolution datasets, and appears as an irregular galaxy with two close components in the Ks-band images (separation ∼ 0.3″). Given the small impact parameter (b = 19.6 kpc, at zlls = 2.531), as well as the red color of (J - Ks)Vega ∼ 1.6, it might be a candidate galaxy giving rise to the Lyman Limit system absorption at zabs = 2.531 seen in the QSO spectrum. After carefully subtracting the point spread function from the QSO images, the host galaxy of this bright radio quiet QSO at z ∼ 3 was marginally revealed. We placed a lower limit on the host component of mk ∼ 23.3 according to our analyses.
KW - galaxies: active
KW - galaxies: high redshift
KW - instrumentation: adaptive optics
KW - quasars: general
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U2 - 10.1088/1674-4527/15/5/006
DO - 10.1088/1674-4527/15/5/006
M3 - Article
AN - SCOPUS:84928818085
SN - 1674-4527
VL - 15
SP - 673
EP - 686
JO - Research in Astronomy and Astrophysics
JF - Research in Astronomy and Astrophysics
IS - 5
ER -