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We report the detection of the host galaxy of a damped Ly$\alpha$ system(DLA) with log N(HI) $ [\rm cm^{-2}]$ = $21.0 \pm 0.10$ at $z \approx 3.0091$towards the background quasar SDSS J011852+040644 using the Palomar Cosmic WebImager (PCWI) at the Hale (P200) telescope. We detect Ly$\alpha$ emission inthe dark core of the DLA trough at a 3.3$\sigma$ confidence level, withLy$\alpha$ luminosity of $L_{\rm Ly\alpha}$ $\rm = (3.8 \pm 0.8) \times10^{42}\ erg\ s^{-1}$, corresponding to a star formation rate of $\gtrsim 2\\rm M_{\odot}\ yr^{-1}$ (considering a lower limit on Ly$\alpha$ escapefraction $f_{esc}^{Ly{\alpha}} \sim 2\%$) as typical for Lyman break galaxiesat these redshifts. The Ly$\alpha$ emission is blueshifted with respect to thesystemic redshift derived from metal absorption lines by $281 \pm 43$ km/s. Theassociated galaxy is at very small impact parameter of $\lesssim 12 \rm\ kpc$from the background quasar, which is in line with the observed anticorrelationbetween column density and impact parameter in spectroscopic searches tracingthe large-scale environments of DLA host galaxies.

Discovery of a damped Ly$\alpha$ galaxy at z $\sim$ 3 towards the quasar SDSS J011852+040644