Other
Scientific paper
Jun 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991mnras.250..531c&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 250, June 1, 1991, p. 531-540.
Other
6
H Ii Regions, Quasars, Red Shift, Astronomical Spectroscopy, Computerized Simulation, Emission Spectra
Scientific paper
A search for intermediate-redshift quasars has been carried out with slitless spectroscopy in the central 21.07 sq deg of the SA 94, where the existence of a large database of objects for which slit spectroscopy was already available provided a valuable opportunity of testing the properties of the present selection technique. Fifty candidates have been observed with slit spectroscopy, confirming 34 quasars and two H II galaxies. The completeness of this survey as a function of magnitude and redshift has been analyzed, and an effective area of 16.9 sq deg has been evaluated. The estimated quasar surface density for QSOs with z between 1.8 and 3.2 and B less than 19.4 is 1.4 + or - 0.3/sq deg, in agreement with other surveys in the literature.
Barbieri Carlo
Clowes Roger G.
Cristiani Stefano
Iovino Angela
La Franca Fabio
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