Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979aj.....84.1111g&link_type=abstract
Astronomical Journal, vol. 84, Aug. 1979, p. 1111-1121. Research supported by the Natural Sciences and Engineering Research Cou
Astronomy and Astrophysics
Astronomy
13
Elliptical Galaxies, Galactic Nuclei, Optical Measurement, Radio Galaxies, Radio Sources (Astronomy), Interferometers, Position Errors, Reference Stars, Reliability, Star Distribution, Tables (Data)
Scientific paper
Optical positions measured with an accuracy to within about 0.4 arcsec are presented for the centers of 87 elliptical and S0 galaxies identifiable with radio sources that have been mapped either with the NRAO four-element interferometer at 2.7 and 8.1 GHz or with VLA antennas at 4.9 GHz. The optical measuring procedure is outlined, and the optical positions are given along with approximate apparent magnitudes and brief descriptions of other objects in some of the fields. Fifty identifications are made on the basis of coincidence between a small-diameter component in the radio source and the optical center of a galaxy. The reliability of the remaining identifications is evaluated in the light of previously established reliability criteria.
Bridle Alan H.
Goodson R. E.
Palimaka J. J.
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