TY - JOUR
T1 - WISE J233237.05-505643.5 : a double-peaked, broad-lined active galactic nucleus with a spiral-shaped radio morphology
AU - Tsai, Chao-Wei
AU - Jarrett, T. H.
AU - Stern, Daniel
AU - Emonts, Bjorn
AU - Barrows, R. Scott
AU - Assef, Roberto J.
AU - Norris, Ray P.
AU - Eisenhardt, Peter R. M.
AU - Lonsdale, Carol
AU - Blain, Andrew W.
AU - Benford, Dominic J.
AU - Wu, Jingwen
AU - Stalder, Brian
AU - Stubbs, Christopher W.
AU - High, F. William
AU - Li, K. L.
AU - Kong, Albert K. H.
PY - 2013
Y1 - 2013
N2 - We present radio continuum mapping, optical imaging, and spectroscopy of the newly discovered double-peaked, broad-lined active galactic nucleus (AGN) WISE J233237.05-505643.5 at redshift z = 0.3447. This source exhibits an FR-I and FR-II hybrid morphology, characterized by a bright core, jet, and Doppler-boosted lobe structures in Australian Telescope Compact Array continuum maps at 1.5, 5.6, and 9 GHz. Unlike most FR-II objects, W2332-5056 is hosted by a disk-like galaxy. The core has a projected 5″ linear radio feature that is perpendicular to the curved primary jet, hinting at unusual and complex activity within the inner 25 kpc. The multi-epoch, optical-near-IR photometric measurements indicate significant variability over a 3-20 yr baseline from the AGN component. Gemini South optical data show unusual double-peaked emission-line features: the centroids of the broad-lined components of Hα and Hβ are blueshifted with respect to the narrow lines and host galaxy by ∼3800 km s-1. We examine possible cases that involve single or double supermassive black holes in the system and discuss the required future investigations to disentangle the mysterious nature of this system.
AB - We present radio continuum mapping, optical imaging, and spectroscopy of the newly discovered double-peaked, broad-lined active galactic nucleus (AGN) WISE J233237.05-505643.5 at redshift z = 0.3447. This source exhibits an FR-I and FR-II hybrid morphology, characterized by a bright core, jet, and Doppler-boosted lobe structures in Australian Telescope Compact Array continuum maps at 1.5, 5.6, and 9 GHz. Unlike most FR-II objects, W2332-5056 is hosted by a disk-like galaxy. The core has a projected 5″ linear radio feature that is perpendicular to the curved primary jet, hinting at unusual and complex activity within the inner 25 kpc. The multi-epoch, optical-near-IR photometric measurements indicate significant variability over a 3-20 yr baseline from the AGN component. Gemini South optical data show unusual double-peaked emission-line features: the centroids of the broad-lined components of Hα and Hβ are blueshifted with respect to the narrow lines and host galaxy by ∼3800 km s-1. We examine possible cases that involve single or double supermassive black holes in the system and discuss the required future investigations to disentangle the mysterious nature of this system.
UR - http://hdl.handle.net/1959.7/uws:23334
U2 - 10.1088/0004-637X/779/1/41
DO - 10.1088/0004-637X/779/1/41
M3 - Article
SN - 0004-637X
VL - 779
JO - Astrophysical Journal
JF - Astrophysical Journal
IS - 1
M1 - 41
ER -