Surface Density of Bright, Active Extragalactic Objects

Details Surface Density of Bright, Active Extragalactic Objects Surface Density of Bright, Active Extragalactic Objects

Oct 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001ap.....44..498e&link_type=abstract

Astrophysics (English translation of Astrofizika), v. 44, Issue 4, p. 498-504 (2001).

Astronomy and Astrophysics

Astrophysics

Scientific paper

A new sample of local, active extragalactic objects has been compiled: a combined sample that is the sum of two samples, of Sy1 galaxies and of quasars from Markarian's survey and quasars from the Bright Quasar Survey. A log N(B)-B relation is constructed for the new sample of active galaxies, limited to the apparent stellar magnitude B = 15 m .5. It can be represented by a straight line with a slope = 0.60 ± 0.06. It is a good extension, without a noticeable jog, of the analogous relationship for the Hamburg—ESO survey, which has a slope = 0.59 ± 0.04. The combined surface density of bright active galaxies and quasars down to B = 15 m .5 is 0.01 per square degree.

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