Oral Presentation
Star formation history of mass selected galaxies at 0.1 < z < 1.5 in the ELAIS N1
Presenter: Emmanuel Francis Ocran (Korea Astronomy and Space Science Institute)
Radio observations are often combined with optical and infra-red or x-ray observations. Each type of observation complements the others and this helps the study of the evolution of galaxies.
We measure the specific star formation rates (sSFRs) of K-band selected galaxies from the ELAIS N1 field by stacking 610 MHz wide GMRT data. We stack by mass and redshift bins respectively, for sources drawn from the rich LOFAR Two-metre Sky Survey (LoTSS) deep ancillary data. We calibrate the 610 MHz rest-frame luminosities as SFRs indicators following Garn et al. 2009. This experiment provides a coherent, uniform measurement of the evolution of the logarithmic star formation rate (SFR)– stellar mass (M_star) relation, called the main sequence of star-forming galaxies (MS), for star forming galaxies out to z ~1.5.. The datasets used in these studies provide a first look at the faint radio sky at sensitivities that is being achieved by key programs on the South African MeerKAT radio telescope. Now is an ideal time to take first steps in the exploration of the radio universe that will be made by the Square Kilometre Array.
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