$\textit{Herschel}$-ATLAS:The connection between star formation and AGN
  activity in radio-loud and radio-quiet active galaxies
  We examine the relationship between star formation and AGN activity by
constructing matched samples of local ($0<z<0.6$) radio-loud and radio-quiet
AGN in the $\textit{Herschel}$-ATLAS fields. Radio-loud AGN are classified as
high-excitation and low-excitation radio galaxies (HERGs, LERGs) using their
emission lines and $\textit{WISE}$ 22-$\mu$m luminosity. AGN accretion and jet
powers in these active galaxies are traced by [OIII] emission-line and radio
luminosity, respectively. Star formation rates (SFRs) and specific star
formation rates (SSFRs) were derived using $\textit{Herschel}$ 250-$\mu$m
luminosity and stellar mass measurements from the SDSS$-$MPA-JHU catalogue. In
the past, star formation studies of AGN have mostly focused on high-redshift
sources to observe the thermal dust emission that peaks in the far-infrared,
which limited the samples to powerful objects. However, with
$\textit{Herschel}$ we can expand this to low redshifts. Our stacking analyses
show that SFRs and SSFRs of both radio-loud and radio-quiet AGN increase with
increasing AGN power but that radio-loud AGN tend to have lower SFR.
Additionally, radio-quiet AGN are found to have approximately an order of
magnitude higher SSFRs than radio-loud AGN for a given level of AGN power. The
difference between the star formation properties of radio-loud and -quiet AGN
is also seen in samples matched in stellar mass.
