Accession Number : AD0704793

Title :   OPTICAL IDENTIFICATION OF RADIO SOURCES SELECTED FROM THE 4C CATALOG,

Corporate Author : CALIFORNIA INST OF TECH PASADENA OWENS VALLEY RADIO OBSERVATORY

Personal Author(s) : Olsen,E. T.

Report Date : 1970

Pagination or Media Count : 57

Abstract : A total of 490 radio positions having an average error of plus or minus 20 seconds in both coordinates have been studied optically in an attempt to identify the sources. The radio sources were selected from the 4C catalog and the optical search was carried out on the Palomar Sky Survey prints. Approximately one-third of the 204 identifications proposed here are quasi-stellar objects. There is evidence that the plate limit of the sky survey is affecting the identification of galaxies. (Author)

Descriptors :   (*EXTRATERRESTRIAL RADIO WAVES, OPTICAL PROPERTIES), CLASSIFICATION, ASTRONOMICAL OBSERVATORIES, STARS, INTERFEROMETERS, STATISTICAL ANALYSIS, RADIO ASTRONOMY, CALIFORNIA

Subject Categories : Astrophysics

Distribution Statement : APPROVED FOR PUBLIC RELEASE