Cosmic evolution of star-forming galaxies to z 1.8 in the faint low-frequency radio source population
| dc.contributor.author | Ocran, E. F. | |
| dc.contributor.author | Taylor, A. R. | |
| dc.contributor.author | Vaccari, M. | |
| dc.date.accessioned | 2021-02-12T10:15:34Z | |
| dc.date.available | 2021-02-12T10:15:34Z | |
| dc.date.issued | 2019 | |
| dc.description.abstract | We 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.citation | Ocran, 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), 5911–5924 | en_US |
| dc.identifier.issn | 1365-2966 | |
| dc.identifier.uri | https://doi.org/10.1093/mnras/stz3401 | |
| dc.identifier.uri | http://hdl.handle.net/10566/5912 | |
| dc.language.iso | en | en_US |
| dc.publisher | Oxford University Press | en_US |
| dc.subject | Galaxies: luminosity function | en_US |
| dc.subject | Galaxies: starburst | en_US |
| dc.subject | Large-scale structure of Universe | en_US |
| dc.subject | Radio continuum: galaxies | en_US |
| dc.subject | Low-frequency radio | en_US |
| dc.title | Cosmic evolution of star-forming galaxies to z 1.8 in the faint low-frequency radio source population | en_US |
| dc.type | Article | en_US |