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
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
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DOI：
10.3847/1538-4357/ac9af2
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发表时间：
2022-10
期刊：
影响因子：
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通讯作者：
Chenxu Liu;K. Gebhardt;W. Kollatschny;R. Ciardullo;E. Cooper;D. Davis;D. Farrow;S. Finkelstein;E. Gawiser;C. Gronwall;G. Hill;Lindsay R. House;D. Schneider;T. Urrutia;G. Zeimann
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作者：
Chenxu Liu;K. Gebhardt;W. Kollatschny;R. Ciardullo;E. Cooper;D. Davis;D. Farrow;S. Finkelstein;E. Gawiser;C. Gronwall;G. Hill;Lindsay R. House;D. Schneider;T. Urrutia;G. Zeimann
我们在霍比-埃伯利望远镜暗能量实验调查（HETDEX）中报道了一个具有极高等效宽度（EW）的活动星系核（AGN）， EWLyα+N V,rest≥921 Å，在静止帧中，在z ~ 2.24处，作为高EW AGN群体的代表案例。连续能级在HETDEX光谱中未被检测到；因此测得的电子战是一个下限。在HETDEX （3500-5500 Å）波长范围内，在Lyα + N v λ1241， C iv λ1549处有显著的发射谱线（bbb7 σ），在He ii λ1640处有中等的发射谱线（~ 4σ）。Hyper prime- cam - hetdex联合探测的r波段震级为24.57，在5σ处的检出限为r = 25.12。Lyα发射线横跨一个直径为~ 10″（85 kpc）的清晰分辨区域。Lyα谱线为强双峰型。光谱分解后的蓝色气体和红色气体Lyα发射用~ 1分离。″2 (10.1 kpc)，视距速度偏移约1100 km s−1。这个来源可能是一个有强风的被遮挡的AGN。
We report an active galactic nucleus (AGN) with an extremely high equivalent width (EW), EWLyα+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 (>7σ) at Lyα + N v λ1241, C iv λ1549, and a moderate emission line (∼4σ) at He ii λ1640 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 5σ. The Lyα emission line spans a clearly resolved region of ∼10″ (85 kpc) in diameter. The Lyα line profile is strongly double peaked. The spectral decomposed blue gas and red gas Lyα 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.