Blue galaxies identified with submilliJansky radio sources in the 1300 + 3034 field

Details Blue galaxies identified with submilliJansky radio sources in the 1300 + 3034 field Blue galaxies identified with submilliJansky radio sources in the 1300 + 3034 field

Oct 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aj....104.1331t&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 104, no. 4, p. 1331-1338.

Astronomy and Astrophysics

Astronomy

5

Astronomical Photometry, Extragalactic Radio Sources, Radio Astronomy, Starburst Galaxies, Charge Coupled Devices, Color-Magnitude Diagram, Red Shift

Scientific paper

We have obtained deep B and R CCD frames in order to optically identify sub-mJy radio sources discovered in a deep 1.49 GHz VLA survey field centered at alpha (1950) = 13h00m37s, delta(1950) = + 30 deg 34 arcmin. B and R photometry is presented for 37 optical identifications. Using spectral evolution models, we conclude that galaxies brighter than B about 25 identified with sub-mJy radio sources are much bluer than giant elliptical galaxies, but are similar to starburst galaxies with absolute magnitude M(v) = about -23-20 and redshifts in the range 2 = about 0.1-0.8. This population of blue galaxies is the same as that found by Thuan and Condon (1987) in the 0852 + 1716 field using different techniques (optical and near-infrared photometry), suggesting that this population of starburst galaxies at intermediate redshifts is universal.

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