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We investigate the relationship between star formation activity and outflowproperties on kiloparsec scales in a sample of 28 star forming galaxies at$z\sim$ 2-2.6, using adaptive optics assisted integral field observations fromSINFONI on the VLT. The narrow and broad components of the H$\alpha$ emissionare used to simultaneously determine the local star formation rate surfacedensity ($\Sigma_{\rm SFR}$), and the outflow velocity $v_{\rm out}$ and massoutflow rate $\dot{M}_{\rm out}$, respectively. We find clear evidence forfaster outflows with larger mass loading factors at higher $\Sigma_{\rm SFR}$.The outflow velocities scale as $v_{\rm out}$ $\propto$ $\Sigma_{\rm SFR}^{0.34\pm 0.10}$, which suggests that the outflows may be driven by a combination ofmechanical energy released by supernova explosions and stellar winds, as wellas radiation pressure acting on dust grains. The majority of the outflowingmaterial does not have sufficient velocity to escape from the galaxy halos, butwill likely be re-accreted and contribute to the chemical enrichment of thegalaxies. In the highest $\Sigma_{\rm SFR}$ regions the outflow componentcontains an average of $\sim$45% of the H$\alpha$ flux, while in the lower$\Sigma_{\rm SFR}$ regions only $\sim$10% of the H$\alpha$ flux is associatedwith outflows. The mass loading factor, $\eta$ = $\dot{M}_{\rm out}$/SFR, ispositively correlated with $\Sigma_{\rm SFR}$ but is relatively low even at thehighest $\Sigma_{\rm SFR}$: $\eta \lesssim$ 0.5 $\times$ (380 cm$^{-3}$/n$_e$).This may be in tension with the $\eta$ $\gtrsim$ 1 required by cosmologicalsimulations, unless a significant fraction of the outflowing mass is in othergas phases and has sufficient velocity to escape the galaxy halos.

Kiloparsec Scale Properties of Star-Formation Driven Outflows at z~2.3 in the SINS/zC-SINF AO Survey