Concentration of quasars around the active extragalactic object 3C 345.

Details Concentration of quasars around the active extragalactic object 3C 345. Concentration of quasars around the active extragalactic object 3C 345.

Nov 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997a%26a...327..479a&link_type=abstract

Astronomy and Astrophysics, v.327, p.479-482

Astronomy and Astrophysics

Astrophysics

8

Quasars: Individual: 3C 345, Galaxies: Individual: Ngc 6212, X-Rays: Galaxies, Quasars: General

Scientific paper

It is shown that there is an over density of about a dozen fainter, generally higher redshift quasars around the bright,strongly variable 3C 345. The associated quasars are generally aligned through 3C 345 with an accuracy that is highly improbable to occur by chance. There is a Seyfert 1 galaxy (NGC 6212) within 4.7 arc min of 3C 345, as in many other significant associations of quasars with low redshift galaxies. The excess of quasars around 3C 345 and the Seyfert (a factor of 15) is similar to the excess of quasars around the jet Seyfert NGC1097 (a factor of 20) which was found in 1984. It is noted that at a redshift of z=0.59, 3C 345 is like a number of other bright apparent magnitude quasars of medium redshift which fall significantly close to low redshift, active galaxies and exhibit alignments of X-ray sources and X-ray BSO's and quasars.

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