Optical identification of steep spectrum radio sources in the RC catalog using the 6-m SAO telescope - Requirements for the coordinate precision and VLA image depth and methods for estimating the photometric redshift

Details Optical identification of steep spectrum radio sources in the RC catalog using the 6-m SAO telescope - Requirements for the coordinate precision and VLA image depth and methods for estimating the photometric redshift Optical identification of steep spectrum radio sources in the RC catalog using the 6-m SAO telescope - Requirements for the coordinate precision and VLA image depth and methods for estimating the photometric redshift

Aug 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995azh....72..437k&link_type=abstract

Astronomicheskij Zhurnal, vol. 72, p. 437

Astronomy and Astrophysics

Astronomy

8

Radio Sources (Astronomy), Astronomical Catalogs, Very Large Array (Vla), Red Shift, Astronomical Photometry, Elliptical Galaxies, Radio Telescopes, Radio Astronomy, Image Analysis

Scientific paper

Requirements for the accuracy of optical and radio coordinate determination for identification of weak FRII radio sources with distant giant elliptical galaxies are discussed, as are the means of estimating their redshifts using all accumulated data on distant objects of this class. It is shown that, in order to implement a first-generation galactic search program begun by the Special Astrophysical Observatory (SAO) using RATAN 600, the VLA, and the BTA, sufficient accuracy is approximately 1 arcsec, and sufficient depth of optical image is 26 m. A simple method for realizing these requirements is described. The Hubble diagram for steep spectrum FRII radio galaxies is refined. VLA radio images of a subsample of steep spectrum sources from the RC catalog and positions of the centers of gravity of these images are presented.

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