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Placing High-redshift Quasars in Perspective: A Catalog of Spectroscopic Properties from the Gemini Near Infrared Spectrograph–Distant Quasar Survey

Journal Article · · The Astrophysical Journal. Supplement Series (Online)
 [1];  [2];  [2];  [3];  [3];  [4];  [5];  [4];  [6];  [7];  [8];  [9];  [10];  [11];  [5];  [12];  [13];  [14]
  1. Univ. of North Texas, Denton, TX (United States); University of Wyoming
  2. Univ. of North Texas, Denton, TX (United States)
  3. Univ. of Wyoming, Laramie, WY (United States)
  4. Univ. Nacional de La Plata (Argentina); Centro Científico Tecnológico del Consejo Nacional de Investigaciones Científicas y Técnicas, La Plata (Argentina)
  5. Pennsylvania State Univ., University Park, PA (United States)
  6. Univ. of Western Ontario, London, ON (Canada)
  7. Univ. of Arizona, Tucson, AZ (United States)
  8. Univ. de Chile, Santiago (Chile)
  9. Univ. of Nevada, Reno, NV (United States)
  10. Drexel Univ., Philadelphia, PA (United States)
  11. Vanderbilt Univ., Nashville, TN (United States)
  12. Univ. of Illinois at Urbana-Champaign, IL (United States)
  13. Princeton Univ., NJ (United States)
  14. Univ. of Texas, Austin, TX (United States)
+ Show Author Affiliations

Here, 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 ($$m_i$$ ≲ 19.0 mag, H ≲ 16.5 mag) of Sloan Digital Sky Survey (SDSS) quasars at 1.5 ≲ $$\mathcal{z}$$ ≲ 3.5 with a monochromatic luminosity ($$\lambda {L}_{\lambda }$$) 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.

Research Organization:
Univ. of Wyoming, Laramie, WY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP); National Science Foundation (NSF)
Grant/Contract Number:
SC0019022
OSTI ID:
1787341
Alternate ID(s):
OSTI ID: 23163468
Journal Information:
The Astrophysical Journal. Supplement Series (Online), Journal Name: The Astrophysical Journal. Supplement Series (Online) Journal Issue: 2 Vol. 252; ISSN 1538-4365
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English

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Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
catalogs
line: profiles
quasars: general
surveys