The FIRST Bright Quasar Survey. II. 60 Nights and 1200 Spectra Later

Details The FIRST Bright Quasar Survey. II. 60 Nights and 1200 Spectra Later The FIRST Bright Quasar Survey. II. 60 Nights and 1200 Spectra Later

1999-12-10

arxiv.org/abs/astro-ph/9912215v1

Astrophys.J.Suppl.126:133,2000

Astronomy and Astrophysics

Astrophysics

41 pages plus 39 gifs which contain all quasar spectra. Accepted for publication in the Astrophysical Journal Supplement Serie

Scientific paper

10.1086/313300

We have used the VLA FIRST survey and the APM catalog of the POSS-I plates as the basis for constructing a new radio-selected sample of optically bright quasars. This is the first radio-selected sample that is competitive in size with current optically selected quasar surveys. Using only two basic criteria, radio-optical positional coincidence and optical morphology, quasars and BL Lacs can be identified with 60% selection efficiency; the efficiency increases to 70% for objects fainter than magnitude 17. We show that a more sophisticated selection scheme can predict with better than 85% reliability which candidates will turn out to be quasars. This paper presents the second installment of the FIRST Bright Quasar Survey with a catalog of 636 quasars distributed over 2682 square degrees. The quasar sample is characterized and all spectra are displayed. The FBQS detects both radio-loud and radio-quiet quasars out to a redshift z>3. We find a large population of objects of intermediate radio-loudness; there is no evidence in our sample for a bimodal distribution of radio characteristics. The sample includes ~29 broad absorption line quasars, both high and low ionization, and a number of new objects with remarkable optical spectra.

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