The VLA Nascent Disk and Multiplicity Survey: First Look at Resolved
  Candidate Disks around Class 0 and I Protostars in the Perseus Molecular
  Cloud
  We present the first dust emission results toward a sample of seven
protostellar disk candidates around Class 0 and I sources in the Perseus
molecular cloud from the VLA Nascent Disk and Multiplicity (VANDAM) survey with
~0.05'' or 12 AU resolution. To examine the surface brightness profiles of
these sources, we fit the Ka-band 8 mm dust-continuum data in the u,v-plane to
a simple, parametrized model based on the Shakura-Sunyaev disk model. The
candidate disks are well-fit by a model with a disk-shaped profile and have
masses consistent with known Class 0 and I disks. The inner-disk surface
densities of the VANDAM candidate disks have shallower density profiles
compared to disks around more evolved Class II systems. The best-fit model
radii of the seven early-result candidate disks are R_c > 10 AU; at 8 mm, the
radii reflect lower limits on the disk size since dust continuum emission is
tied to grain size and large grains radially drift inwards. These relatively
large disks, if confirmed kinematically, are inconsistent with theoretical
models where the disk size is limited by strong magnetic braking to < 10 AU at
early times.
