In:
Symposium - International Astronomical Union, Cambridge University Press (CUP), Vol. 134 ( 1989), p. 25-30
Kurzfassung:
The APM QSO survey is a quantitative survey aimed at finding a large sample (∼ 1000) of QSOs using broadly-based selection criteria applied to machine-scanned UK Schmidt Telescope direct and objective-prism plates. The survey is currently entering its third year and, as of August 1988, the sample consists of ∼ 700 QSOs with m J ≥ 18.75 in the range 0.2 ≤ z ≤ 3.3. Preliminary analysis suggests that the sample is relatively free of the selection effects endemic to most QSO surveys based on slitless spectroscopy.
Materialart:
Online-Ressource
ISSN:
0074-1809
DOI:
10.1017/S0074180900140252
Sprache:
Englisch
Verlag:
Cambridge University Press (CUP)
Publikationsdatum:
1989
SSG:
16,12
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