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The recently claimed discovery of an ultra-diffuse galaxy lacking dark matterhas important implications for alternate theories to dark matter as well asmodels of galaxy formation within the $\Lambda$CDM context. In this letter, wepresent a deep Giant Metrewave Radio Telescope (GMRT) search for atomichydrogen in this ultra-diffuse galaxy, NGC1052-DF2. We report a non-detectionof the HI21cm transition from the galaxy and place a stringent upper-limit onthe HI mass of the galaxy - $M_{HI} < 3.15 \times 10^6 \ ({\Delta V}/20 \\textrm{km/s})^{1/2} \ M_\odot \ (3\sigma)$. This makes NGC1052-DF2 anextremely gas poor galaxy with an atomic gas to stellar mass fraction of$M_{HI}/M_* \ < \ 0.016 \ ({\Delta V}/20 \ \textrm{km/s})^{1/2} \ (3\sigma)$.Such low gas fractions are typical of dwarf ellipticals in dense environmentsand would be consistent with NGC1052-DF2 having undergone a tidal strippingevent which can also explain its apparent lack of dark matter.

A Dearth of Atomic Hydrogen in NGC1052-DF2