Cosmic evolution of star-forming galaxies to z 1.8 in the faint low-frequency radio source population

dc.contributor.authorOcran, E. F.
dc.contributor.authorTaylor, A. R.
dc.contributor.authorVaccari, M.
dc.date.accessioned2021-02-12T10:15:34Z
dc.date.available2021-02-12T10:15:34Z
dc.date.issued2019
dc.description.abstractWe study the properties of star-forming galaxies selected at 610 MHz with the GMRT in a survey covering ∼1.86 deg2 down to a noise of ∼7.1 μJy beam−1. These were identified by combining multiple classification diagnostics: optical, X-ray, infrared, and radio data. Of the 1685 SFGs from the GMRT sample, 496 have spectroscopic redshifts whereas 1189 have photometric redshifts. We find that the IRRC of star-forming galaxies, quantified by the infrared-to-1.4 GHz radio luminosity ratio qIR⁠, decreases with increasing redshift: qIR=2.86±0.04(1+z)−0.20±0.02 out to z ∼ 1.8. We use the V/Vmax statistic to quantify the evolution of the comoving space density of the SFG sample. Averaged over luminosity our results indicate ⟨V/Vmax⟩ to be 0.51±0.06⁠, which is consistent with no evolution in overall space density. However, we find V/Vmax to be a function of radio luminosity, indicating strong luminosity evolution with redshift.en_US
dc.identifier.citationOcran, E. F. et al. (2019). Cosmic evolution of star-forming galaxies to z 1.8 in the faint low-frequency radio source population. Monthly Notices of the Royal Astronomical Society, 491(4), 5911–5924en_US
dc.identifier.issn1365-2966
dc.identifier.urihttps://doi.org/10.1093/mnras/stz3401
dc.identifier.urihttp://hdl.handle.net/10566/5912
dc.language.isoenen_US
dc.publisherOxford University Pressen_US
dc.subjectGalaxies: luminosity functionen_US
dc.subjectGalaxies: starbursten_US
dc.subjectLarge-scale structure of Universeen_US
dc.subjectRadio continuum: galaxiesen_US
dc.subjectLow-frequency radioen_US
dc.titleCosmic evolution of star-forming galaxies to z 1.8 in the faint low-frequency radio source populationen_US
dc.typeArticleen_US

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