Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999apj...525..594a&link_type=abstract
The Astrophysical Journal, Volume 525, Issue 2, pp. 594-602.
Astronomy and Astrophysics
Astronomy
18
Galaxies: Active, Galaxies: Seyfert, Galaxies: Quasars: General, Radio Continuum: Galaxies
Scientific paper
Two fields uniformly searched by the Westerbork radio telescope are discussed. They contain four blue radio galaxies brighter than F=16.9 mag and eight quasars and active galactic nuclei (AGNs) with 1.84<=z<=2.397. The latter objects group in the vicinity of the blue galaxies. In the case of the violently disrupted blue radio galaxy, 53W003, there are, within about 2', five AGNs of 2.389<=z<=2.397. Mixed into this same small region are about 18 less compact Lyα emitters of similar redshift. It is shown that the distribution of all the known high-redshift objects in the two fields follows the same rules of association with active galaxies as have been observed since 1966. In particular, there is another exactly aligned triplet of quasars of z=1.84 and 2.14 across a radio quasar of z=0.55 which almost exactly matches the Arp/Hazard triplet configurations found in 1980.
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