Targets: We are targeting the six Local Group galaxies that have high mass star formation and can be observed by the Karl G. Jansky Very Large Array:
M31 - we cover the disk of M31 using 49 VLA pointings.
M33 - we cover the disk of M33 using 13 VLA pointings.
NGC 6822 - we cover the disk of NGC 6822 using 3 VLA pointing.
IC10, IC 1613, WLM - for each of these dwarf galaxies we cover the galaxy with a 7 point hex of pointings in C and D configuration and a single pointing in A configuration.
The positions of our pointing centers are available on request and will be posted here soon. We will also make anticipated primary beam response maps at 1.4 GHz available as FITS files and ds9 region files shortly.
Correlator Set Up: We use a single correlator set up that simultaneously covers:
The 1-2 GHz polarized continuum (polarization measurements of the targets are a target of opportunity science goal) at 1 MHz resolution.
The 21-cm line at ~0.42 km/s resolution across 4096 channels, easily enough to cover the full velocity range of each target.
The four OH lines at 1612, 1665, 1667, and 1720 MHz at 1-2 km/s resolution. The OH lines are secondary science targets.
We allocate unused correlator resources to cover 1-2 GHz radio recombination lines as targets of opportunity.
More details of the correlator set up are available on request.
Configurations: We will observe with all four VLA configurations, using a time balance of 0.5:1:1:1 among D:C:B:A and aiming for a total effective integration time (after accounting for mosaicking) of 5.5h:11h:11h:11h per field.
This time balance may appear a bit unusual to veterans of VLA or ALMA imaging - it reflects our goal to simultaneously optimize for deep HI, diffuse continuum, high resolution continuum, and high resolution line imaging. Different weightings will be used to produce a suite of science products optimized for distinct applications.
Pipeline, Imaging, and Observations Team: We have an active pipeline, imaging, and observation management group that has prototyped our strategies on test and archival data and is continuously working to improve our strategies. This includes:
Laura Chomiuk, Preshanth Jagannathan, Amanda Kepley Eric Koch, Joshua Marvil, Erik Rosolowsky, Sumit Sarbadhicary, Snezana Stanimirovic, Jay Strader, Fabian Walter (the bold folks are incredibly hard-working postdocs who have worked for multiple years building our approach based on pilot and archival observations!)
We also gratefully acknowledge extensive consultation with the NRAO staff, especially Emmanuel Momjian and all of the member of the Technical Operation Readiness Review.
We welcome anyone interested to get in touch with us about details of the observations.