Placing High-redshift Quasars in Perspective: A Catalog of Spectroscopic Properties from the Gemini Near Infrared Spectrograph–Distant Quasar Survey
Placing High-redshift Quasars in Perspective: A Catalog of Spectroscopic Properties from the Gemini Near Infrared Spectrograph–Distant Quasar Survey
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DOI：
10.3847/1538-4365/abc705
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发表时间：
2020-11
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通讯作者：
B. Matthews;O. Shemmer;C. Dix;M. Brotherton;A. Myers;I. Andruchow;W. Brandt;G. Ferrero;S. Gallagher;R. Green;P. Lira;R. Plotkin;G. Richards;J. Runnoe;D. Schneider;Yue Shen;M. Strauss;Beverley J. Wills U. North Texas;U. Wyoming;U. L. Plata;Penn State;Western;U. Arizona;U. Chile;U. N. Reno;Drexel;Vanderbilt;U. I. Urbana-Champaign;Princeton;U. T. A. Austin
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作者：
B. Matthews;O. Shemmer;C. Dix;M. Brotherton;A. Myers;I. Andruchow;W. Brandt;G. Ferrero;S. Gallagher;R. Green;P. Lira;R. Plotkin;G. Richards;J. Runnoe;D. Schneider;Yue Shen;M. Strauss;Beverley J. Wills U. North Texas;U. Wyoming;U. L. Plata;Penn State;Western;U. Arizona;U. Chile;U. N. Reno;Drexel;Vanderbilt;U. I. Urbana-Champaign;Princeton;U. T. A. Austin
我们目前的光谱测量226源从双子座近红外光谱仪远距离类星体调查（GNIRS-DQS）。作为同类中最大的均匀、同质巡天，它代表了斯隆数字巡天（SDSS）类星体的一个通量有限的样本（100星等，19.0星等），其单色光度（）在1044-1046 erg s−1范围内。GNIRS和SDSS光谱的组合涵盖了类星体的主要诊断特征，主要是每个源中的C iv λ1549，Mg ii λλ2798，2803，Hβ λ4861和[O iii] λλ4959，5007发射线。光谱清单将主要用于制定处方，以获得更准确和精确的红移，黑洞质量和吸积率的所有类星体。此外，这些测量将有助于理解类星体的静止框架紫外光谱特性对红移、光度和爱丁顿比的依赖性，并测试类星体中央引擎的物理特性是否会随着宇宙时间的推移而演变。
We present spectroscopic measurements for 226 sources from the Gemini Near Infrared Spectrograph–Distant Quasar Survey (GNIRS-DQS). Being the largest uniform, homogeneous survey of its kind, it represents a flux-limited sample (mi ≲ 19.0 mag, H ≲ 16.5 mag) of Sloan Digital Sky Survey (SDSS) quasars at 1.5 ≲ z ≲ 3.5 with a monochromatic luminosity ( ) at 5100 Å in the range of 1044–1046 erg s−1. A combination of the GNIRS and SDSS spectra covers principal quasar diagnostic features, chiefly the C iv λ1549, Mg ii λλ2798, 2803, Hβ λ4861, and [O iii] λλ4959, 5007 emission lines, in each source. The spectral inventory will be utilized primarily to develop prescriptions for obtaining more accurate and precise redshifts, black hole masses, and accretion rates for all quasars. Additionally, the measurements will facilitate an understanding of the dependence of rest-frame ultraviolet–optical spectral properties of quasars on redshift, luminosity, and Eddington ratio, and test whether the physical properties of the quasar central engine evolve over cosmic time.