Identification and spectrophotometry of faint southern radio galaxies

Astronomy and Astrophysics – Astronomy

Scientific paper

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Radio Galaxies, Red Shift, Spectrophotometry, Radio Sources (Astronomy), Sky Surveys (Astronomy)

Scientific paper

A mixed sample of southern radio sources, identified on the Palomar sky survey or on previous direct plates taken with medium-aperture reflectors has been observed. A few deep 4-m photographs and SIT spectrophotometry for redshift and continuum-color measurement were obtained at CTIO. Almost all the sources were faint galaxies; the largest redshift measured was for 3C 275, with z = 0.480. The ultraviolet continuum of PKS 0400-643, a 'thermal' galaxy with z = 0.476, closely resembles that of 3C 295 and shows some color evolution in U-B compared to nearby giant ellipticals.

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