What question did this study set out to answer?

Establish a radio-selected sample of optically bright quasars comparable in volume to optical surveys by combining radio and optical sky surveys.

February 1, 2000The Astrophysical Journal Supplement SeriesOpen Access

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

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Implication

Astronomical survey identifies 636 optically bright quasars across 2682 square degrees, uncovering a continuous distribution of radio loudness rather than a bimodal population.

Key Points

Establish a radio-selected sample of optically bright quasars comparable in volume to optical surveys by combining radio and optical sky surveys.
Matched radio sources from the VLA FIRST survey with optical detections from the Automated Plate Measuring catalog of POSS-I plates across 2,682 deg².
Selected candidates based on radio-optical positional coincidence and optical morphology, confirming targets with optical spectroscopy over 60 observing nights and 1,200 spectra.
Cataloged 636 quasars, yielding a 60% selection efficiency overall, 70% for sources fainter than 17 magnitude, and exceeding 85% reliability using an advanced selection scheme.
Detected quasars out to redshift z > 3 across both radio-loud and radio-quiet regimes, showing an intermediate population without evidence for a bimodal radio distribution.
Identified approximately 29 broad absorption line quasars with both high- and low-ionization characteristics.

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A 2000 study studied this question.

synapsesocial.com/papers/6a9e8b74c448d60cdc368949 https://doi.org/10.1086/313300

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Implication

Astronomical survey identifies 636 optically bright quasars across 2682 square degrees, uncovering a continuous distribution of radio loudness rather than a bimodal population.

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

Discussion

Member takes

Implication

Key Points

Cite This Study

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

Discussion

Member takes

Implication

Key Points

Cite This Study

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