UGC galaxies stronger than 25 mJy at 4.85 GHz

Abstract

view Abstract Citations (128) References (239) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS UGC Galaxies Stronger than 25 mJy at 4.85 GHz Condon, J. J. ; Frayer, D. T. ; Broderick, J. J. Abstract UGC galaxies in the declination band + 5^deg^<δ<+75^deg^ were identified by position coincidence with radio sources stronger than 25 mJy on the Green Bank 4.85 GHz sky maps. Candidate identifications were confirmed or rejected with the aid of published aperture-synthesis maps and new 4.86 GHz VLA maps having 15 or 18 arcsec resolution, resulting in a sample of 347 nearby radio galaxies plus five new quasar-galaxy pairs. The radio energy sources in UGC galaxies were classified as "starbursts" or "monsters" on the basis of their infrared-radio flux ratios, infrared spectral indices, and radio morphologies. The rms scatter in the logarithmic infrared-radio ratio q is not more than σq = 0.16 for starburst galaxies selected at 4.85 GHz. Radio spectral indices were obtained for nearly all of the UGC galaxies, and S0 galaxies account for a disproportionate share of the compact flat-spectrum (α<0.5) radio sources. The extended radio jets and lobes produced by monsters are preferentially, but not exclusively, aligned within about 30^deg^ of the optical minor axes of their host galaxies. The tendency toward minor-axis ejection appears to be independent of radio-source size and is strongest for elliptical galaxies. Publication: The Astronomical Journal Pub Date: February 1991 DOI: 10.1086/115692 Bibcode: 1991AJ....101..362C Keywords: Astronomical Catalogs; Quasars; Radio Galaxies; Starburst Galaxies; Elliptical Galaxies; Infrared Radiation; Radio Emission; Very Large Array (Vla); Astronomy; RADIO SOURCES: GALAXIES full text sources ADS | data products NED (366) SIMBAD (363)