Galaxy And Mass Assembly: The 1.4GHz SFR indicator, SFR-M* relation and
  predictions for ASKAP-GAMA
  We present a robust calibration of the 1.4GHz radio continuum star formation
rate (SFR) using a combination of the Galaxy And Mass Assembly (GAMA) survey
and the Faint Images of the Radio Sky at Twenty-cm (FIRST) survey. We identify
individually detected 1.4GHz GAMA-FIRST sources and use a late-type, non-AGN,
volume-limited sample from GAMA to produce stellar mass-selected samples. The
latter are then combined to produce FIRST-stacked images. This extends the
robust parametrisation of the 1.4GHz-SFR relation to faint luminosities. For
both the individually detected galaxies and our stacked samples, we compare
1.4GHz luminosity to SFRs derived from GAMA to determine a new 1.4GHz
luminosity-to-SFR relation with well constrained slope and normalisation. For
the first time, we produce the radio SFR-M* relation over 2 decades in stellar
mass, and find that our new calibration is robust, and produces a SFR-M*
relation which is consistent with all other GAMA SFR methods. Finally, using
our new 1.4GHz luminosity-to-SFR calibration we make predictions for the number
of star-forming GAMA sources which are likely to be detected in the upcoming
ASKAP surveys, EMU and DINGO.
