Calibration of ultraviolet, mid-infrared and radio star formation rate
  indicators
  We present calibrations for star formation rate indicators in the
ultraviolet, mid-infrared and radio continuum bands, including one of the first
direct calibrations of 150 MHz as a star formation rate indicator. Our
calibrations utilize 66 nearby star forming galaxies with Balmer decrement
corrected H-alpha luminosities, which span 5 orders of magnitude in star
formation rate and have absolute magnitudes of -24<M_r<-12. Most of our
photometry and spectrophotometry is measured from the same region of each
galaxy, and our spectrophotometry has been validated with SDSS photometry, so
our random and systematic errors are small relative to the intrinsic scatter
seen in star formation rate indicator calibrations. We find WISE W4 (22.8
micron), Spitzer 24 micron and 1.4 GHz have tight correlations with Balmer
decrement corrected H-alpha luminosity, with scatter of only 0.2 dex. Our
calibrations are comparable to those from the prior literature for L* galaxies,
but for dwarf galaxies our calibrations can give star formation rates that are
far greater than those derived from much of the prior literature.
