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  • The Active Galactic Nuclei in the Hobby–Eberly Telescope Dark Energy Experiment Survey (HETDEX). III. A Red Quasar with Extremely High Equivalent Widths Showing Powerful Outflows
Title: The Active Galactic Nuclei in the Hobby–Eberly Telescope Dark Energy Experiment Survey (HETDEX). III. A Red Quasar with Extremely High Equivalent Widths Showing Powerful Outflows
Abstract We report an active galactic nucleus (AGN) with an extremely high equivalent width (EW), EW Ly α +N V,rest ≳921 Å , in the rest frame, at z ∼ 2.24 in the Hobby–Eberly Telescope Dark Energy Experiment Survey (HETDEX), as a representative case of the high-EW AGN population. The continuum level is a nondetection in the HETDEX spectrum; thus the measured EW is a lower limit. The source is detected with significant emission lines (>7 σ ) at Ly α + N v λ 1241, C iv λ 1549, and a moderate emission line (∼4 σ ) at He ii λ 1640 within the wavelength coverage of HETDEX (3500–5500 Å). The r -band magnitude is 24.57 from the Hyper Suprime-Cam-HETDEX joint survey with a detection limit of r = 25.12 at 5 σ . The Ly α emission line spans a clearly resolved region of ∼10″ (85 kpc) in diameter. The Ly α line profile is strongly double peaked. The spectral decomposed blue gas and red gas Ly α emission are separated by ∼1.″2 (10.1 kpc) with a line-of-sight velocity offset of ∼1100 km s −1 . This source is probably an obscured AGN with powerful winds.  more » « less
Award ID(s):
1908817
PAR ID:
10454129
Author(s) / Creator(s):
; ; ; ; ; ; ; ; ; ; ; ; ; ;
Date Published:
Journal Name:
The Astrophysical Journal
Volume:
940
Issue:
1
ISSN:
0004-637X
Page Range / eLocation ID:
40
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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