The JCMT Gould Belt Survey: Dense Core Clusters in Orion A
  The Orion A molecular cloud is one of the most well-studied nearby
star-forming regions, and includes regions of both highly clustered and more
dispersed star formation across its full extent. Here, we analyze dense,
star-forming cores identified in the 850 {\mu}m and 450 {\mu}m SCUBA-2 maps
from the JCMT Gould Belt Legacy Survey. We identify dense cores in a uniform
manner across the Orion A cloud and analyze their clustering properties. Using
two independent lines of analysis, we find evidence that clusters of dense
cores tend to be mass segregated, suggesting that stellar clusters may have
some amount of primordial mass segregation already imprinted in them at an
early stage. We also demonstrate that the dense core clusters have a tendency
to be elongated, perhaps indicating a formation mechanism linked to the
filamentary structure within molecular clouds.
