  Accurate active galactic nucleus (AGN) identifications and spatially resolved
host galaxy properties are a powerful combination for studies of the role of
AGNs and AGN feedback in the coevolution of galaxies and their central
supermassive black holes. Here, we present robust identifications of 406 AGNs
in the first 6261 galaxies observed by the integral field spectroscopy survey
Mapping Nearby Galaxies at Apache Point Observatory (MaNGA). Instead of using
optical line flux ratios, which can be difficult to interpret in light of the
effects of shocks and metallicity, we identify the AGNs via mid-infrared WISE
colors, Swift/BAT ultra hard X-ray detections, NVSS and FIRST radio
observations, and broad emission lines in SDSS spectra. We subdivide the AGNs
into radio-quiet and radio-mode AGNs, and examine the correlations of the AGN
classes with host galaxy star formation rates and stellar populations. When
compared to the radio-quiet AGN host galaxies, we find that the radio-mode AGN
host galaxies reside preferentially in elliptical galaxies, lie further beneath
the star-forming main sequence (with lower star formation rates at fixed galaxy
mass), have older stellar populations, and have more negative stellar age
gradients with galactocentric distance (indicating inside-out quenching of star
formation). These results establish a connection between radio-mode AGNs and
the suppression of star formation.
