VizieR Online Data Catalog: ELQS in SDSS. III. The full ELQS quasar catalog (Schindler+, 2019)

This work presents the final Extremely Luminous Quasar Survey (ELQS) quasar catalog, covering the entire SDSS footprint (11838.5+/-20.1deg²), and the resulting quasar luminosity function (QLF) at the bright end at redshifts 2.8<=z<=4.5.

We also report the results of our spectroscopic identification campaign in the South Galactic Cap, the ELQS-S sample.

Observations of the ELQS-S sample have been completed and 96 out of 97 candidates were observed with a range of different telescopes. These include the Vatican Advanced Technology Telescope (VATT; R~1000; central wavelength of ~5775Å), the MMT 6.5m telescope (R~300-400; central wavelenghts of 6400, 7000, 7150Å or 5000, 5500, 6083Å or 3705, 3310Å according to the gratings), the 90 inch (2.3m) Bok Telescope (R~750; ~3655-6850Å), the Nordic Optical Telescope (NOT; wavelength coverage of 3200-9600Å for R~360 and R~280), and the (4.1m) Southern Astrophysical Research Telescope (SOAR; R~830 and R~690 for a spectral coverage of ~4000-8000Å and ~5300-9300Å).

Pilot observations with the VATTSpec spectrograph on the VATT started on 2015 October 8-12. The program continued on 2016 November 20-23 and December 18-20. In 2017 we finished the South Galactic Cap footprint during observations on November 7-12. Depending on the object and the conditions, the exposure times varied between 15 and 30min.

The Boller & Chivens Spectrograph observations on the Bok telescope were conducted in 2016 on October 13-14 and November 15. We used exposure times of ~5-15 minutes.

The Multiple Mirror Telescope (MMT) Red Channel Spectrograph observations were taken in 2017 on May 17-18, October 20-21, and November 16 and on 2018 January 20. We chose exposure times of ~3-15 minutes per spectrum.

In 2017, some identification spectra were taken during the Nordic Optical Telescope (NOT) summer schools (August 23-25, September 5-9). These observations were conducted with the Andalucia Faint Object Spectrograph and Camera (ALFOSC). Exposure times varied between 2.5 and 5 minutes.

In addition, we observed quasar candidates with the Goodman High Throughput Spectrograph (Goodman HTS) on the Southern Astrophysical Research Telescope (SOAR) (4.1m). These observations were carried out on 2017 October 6-10 and 2018 January 22-24. Exposure times varied between 3 and 15 minutes.

(4 data files).