Early science with the Large Millimetre Telescope: An LMT/AzTEC 1.1 mm Survey of dense cores in the Monoceros R2 giant molecular cloud

We present a 1.1 mm census of dense cores in the Mon R2 giant molecular cloud with the AzTEC instrument on the Large Millimetre Telescope. We detect 295 cores (209 starless and 86 with protostars) in a two square degree shallow survey. We also carry out a deep followup survey of nine regions with low to intermediate (3 10 M are exclusively found in regions with high core number densities and that the CMF of the starless cores has an excess of low-mass cores (<5 M ) compared to the CMF of protostellar cores. We report a power-law correlation of index 1.99 0.03 between local core mass density and gas column density (as traced by Herschel) over a wide range of size scales (0.3-5 pc). This power law is consistent with that predicted for thermal fragmentation of a self-gravitating sheet. Finally, we find the global core formation efficiency increases with gas column density, reaching 43 per cent efficiency for gas with A V 30.