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The nature of the faint radio source population and star formation history derived from sub-MJY surveys
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posted on 2023-06-08, 05:53 authored by Carlotta Gruppioni, Seb OliverSeb Oliver, Stephen SerjeantWe present new results on the nature of the faint radio galaxy population obtained from a deep identification study in the Marano Field. This work represents the highest identification fractions attained to date in literature for sub-mJy radio samples. Star-forming galaxies constitute a significant fraction of the optical counterparts of sub-mJy radio sources, although they are not the dominant identification class (as formerly believed). We also present a new determination of the co-moving star formation density from z=0 to z?0.35 using the radio luminosity function of star-forming galaxies. For the local determination, we used a sample of 231 spiral galaxies taken from the B=12 Revised Shapley-Ames Catalogue, while for the non-local determination, we used a sample of87 star-forming galaxies taken from the Benn et al. (1993) sample. The inferred local star formation rate is about twice as great as the Ha estimate, while the intermediate 0.05
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Publication status
- Published
Journal
Astrophysics and Space ScienceISSN
0004-640XExternal DOI
Issue
2-4Volume
276Page range
791-798Department affiliated with
- Physics and Astronomy Publications
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- No
Peer reviewed?
- Yes
Legacy Posted Date
2012-02-06Usage metrics
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