Radio and K-band obs. of Ultra-Steep sources (De Breuck+, 2004)

Details Radio and K-band obs. of Ultra-Steep sources (De Breuck+, 2004) Radio and K-band obs. of Ultra-Steep sources (De Breuck+, 2004)

May 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004ycat..73470837d&link_type=abstract

VizieR On-line Data Catalog: J/MNRAS/347/837. Originally published in: 2004MNRAS.347..837D

Computer Science

Radio Sources, Radio Continuum, Photometry: Infrared, Active Gal. Nuclei, Redshifts

Scientific paper

A sample of 76 ultra-steep spectrum (USS) radio sources is defined from the 843-MHz Sydney University Molonglo Sky Survey (SUMSS) and 1.4-GHz NRAO VLA Sky Survey (NVSS) radio surveys with spectral index {alpha}<-1.3 and S(1.4GHz)>15mJy; 71 of these sources without bright optical or near-infrared counterparts at 1.385GHz were observed with the Australia Telescope Compact Array (ATCA), providing 5arcsec resolution images and subarcsec positional accuracy. To identify their host galaxies, near-infrared K-band images were obtained with IRIS2 at the AAT and SofI at the NTT; 92% of the USS sources could be identified down to K~20.5.
142 FITS files containing the radio maps and the K-band images are included in the fits subdirectory.
(2 data files).

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