A Search for correlations between turbulence and star formation in
  THINGS galaxies
  The spatial range for feedback from star formation varies from molecular
cloud disruption on parsec scales to supershells and disk blowout on kiloparsec
scales. The relative amounts of energy and momentum given to these scales is
important for understanding the termination of star formation in any one region
and the origin of interstellar turbulence and disk stability in galaxies as a
whole. Here we measure for eleven THINGS galaxies the excess kinetic energy,
velocity dispersion and surface density of HI gas associated with regions of
excess star formation, where the excess is determined from the difference
between the observed local value and the azimuthal average. We find small
decreases in the excess kinetic energy and velocity dispersion in regions of
excess star formation rate density, suggesting that most of the feedback energy
does not go into local HI motion. Most likely it disrupts molecular clouds and
dissipates rapidly at high gas density. Some could also be distributed over
larger regions, filling in spaces between the peaks of star formation and
contributing to other energy sources from self-gravity and spiral arm shocks.
