The Active Galactic Nuclei in the Hobby–Eberly Telescope Dark Energy Experiment Survey (HETDEX). I. Sample Selection
The Active Galactic Nuclei in the Hobby–Eberly Telescope Dark Energy Experiment Survey (HETDEX). I. Sample Selection
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DOI：
10.3847/1538-4365/ac6ba6
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发表时间：
2022-04
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通讯作者：
Chenxu Liu;K. Gebhardt;E. Cooper;D. Davis;D. Schneider;R. Ciardullo;D. Farrow;S. Finkelstein;C. Gronwall;Yucheng Guo;G. Hill;Lindsay R. House;D. Jeong;S. Jogee;W. Kollatschny;M. Krumpe;M. Landriau;Óscar A. Chávez Ortiz;Yechi Zhang
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作者：
Chenxu Liu;K. Gebhardt;E. Cooper;D. Davis;D. Schneider;R. Ciardullo;D. Farrow;S. Finkelstein;C. Gronwall;Yucheng Guo;G. Hill;Lindsay R. House;D. Jeong;S. Jogee;W. Kollatschny;M. Krumpe;M. Landriau;Óscar A. Chávez Ortiz;Yechi Zhang
我们介绍了Hobby-Eberly望远镜暗能量实验调查(Hetdex)在2017年1月至2020年6月期间观测到的第一个活动星系核(AGN)目录。Hetdex是一项持续的光谱调查(3500-5500ä)，没有基于幅度、颜色或形态的目标预选，使我们能够仅根据AGN的光谱特征来选择AGN。发光类星体和低亮度Seyferts都在我们的星表中找到。候选AGN至少具有两条显著的AGN发射线，如Lyα和C ivλ1549线对，或具有一条宽的发射线，具有半高宽和GT；1000千米S−1。每个来源都通过目测进一步确认。该星表包含5322个活动星系核，覆盖的有效天空覆盖率为30.61°2。总共有3733个活动星系核有安全的红移，我们提供了其余1589个没有交叉匹配光谱红移的单宽线活动星系核的红移估计，这些红移来自斯隆数字天空测量数据发布的14个类星体。活动星系核星表的红移范围为0.2522.5，在我们搜索的最深成像测量中，2.6%达到了r∼26mag的探测极限。我们还提供了覆盖700-4400ä的AGN样本的复合光谱。
We present the first active galactic nuclei (AGN) catalog of the Hobby–Eberly Telescope Dark Energy Experiment Survey (HETDEX) observed between 2017 January and 2020 June. HETDEX is an ongoing spectroscopic survey (3500–5500 Å) with no target preselection based on magnitudes, colors or morphologies, enabling us to select AGN based solely on their spectral features. Both luminous quasars and low-luminosity Seyferts are found in our catalog. AGN candidates are selected with at least two significant AGN emission lines, such as the Lyα and C iv λ1549 line pair, or with a single broad emission line with FWHM > 1000 km s−1. Each source is further confirmed by visual inspections. This catalog contains 5322 AGN, covering an effective sky coverage of 30.61 deg2. A total of 3733 of these AGN have secure redshifts, and we provide redshift estimates for the remaining 1589 single broad-line AGN with no crossmatched spectral redshifts from the Sloan Digital Sky Survey Data Release 14 of QSOs. The redshift range of the AGN catalog is 0.25 22.5, and 2.6% reaching the detection limit at r ∼ 26 mag of the deepest imaging surveys we searched. We also provide a composite spectrum of the AGN sample covering 700–4400 Å.