The completeness of the Braccesi deep quasar survey

Details The completeness of the Braccesi deep quasar survey The completeness of the Braccesi deep quasar survey

Jun 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...135..122c&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 135, no. 1, June 1984, p. 122-128.

Astronomy and Astrophysics

Astrophysics

7

Astronomical Catalogs, Astronomical Spectroscopy, Quasars, Blue Stars, Red Shift

Scientific paper

All quasar surveys are incomplete. The only way to find out by how much is to reobserve the same fields by other methods. A slitless spectroscopic survey has been made of a 0.46 sq deg area included in the Braccesi (1980) 1.72 sq deg quasar field. Magnitudes and colors of the candidates have been measured on the Schmidt plates used by Formiggini et al. (1980) for the original survey. A catalogue of 75 candidates brighter than B = 20.1 is produced. Its analysis shows that the Braccesi survey is probably complete down to B less than 19.9 (b = 20.0), but significantly incomplete for fainter objects.

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