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 Millimeter Telescope (LMT). We detect
295 cores (209 starless, and 86 with protostars) in a two square degree shallow
survey. We also carry out a deep follow-up survey of 9 regions with low to
intermediate ($3<A_V<7$) gas column densities and detect 60 new cores in the
deeper survey which allows us to derive a completeness limit. After performing
corrections for low signal-to-noise cores, we find a median core mass of $\sim
2.1 \text{M}_{\odot}$ and a median size of $ 0.08$~pc. $46\%$ of the cores
(141) have masses exceeding the local Bonor-Ebert mass for cores with T=12K,
suggesting that in the absence of supporting non-thermal pressure, these
regions are unstable to gravitational collapse. We present the core mass
function (CMF) for various subdivisions of the core sample. We find that cores
with masses $>$10~$M_{\odot}$ 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_{\odot}$) compared to the CMF of protostellar cores. We
report a power law correlation of index $1.99 \pm 0.03$ 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.
