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Xavier Prochaska (4) ((1) Academia Sinica Institute of Astronomy, Nissim Kanekar (3), Taiwan, USA, USA), Wei-Hao Wang (1","submitted_at":"2015-01-23T18:14:40Z","abstract_excerpt":"We report on a sensitive search for redshifted H$\\alpha$ line-emission from three high-metallicity damped Ly$\\alpha$ absorbers (DLAs) at $z \\approx 2.4$ with the Near-infrared Integral Field Spectrometer (NIFS) on the Gemini-North telescope, assisted by the ALTtitude conjugate Adaptive optics for the InfraRed (ALTAIR) system with a laser guide star. Within the NIFS field-of-view, $\\approx 3.22\" \\times 2.92\"$ corresponding to $\\approx 25$ kpc $ \\times 23$ kpc at $z=2.4$, we detect no statistically significant line-emission at the expected redshifted H$\\alpha$ wavelengths. 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