  WFIRST is NASA's first flagship mission with pre-defined core science
programs to study dark energy and perform a statistical census of wide orbit
exoplanets with a gravitational microlensing survey. Together, these programs
are expected to use more than half of the prime mission observing time.
Previously, only smaller, PI-led missions have had core programs that used such
a large fraction of the observing time, and in many cases, the data from these
PI-led missions was reserved for the PI's science team for a proprietary period
that allowed the PI's team to make most of the major discoveries from the data.
Such a procedure is not appropriate for a flagship mission, which should
provide science opportunities to the entire astronomy community. For this
reason, there will be no proprietary period for WFIRST data, but we argue that
a larger effort to make WFIRST science accessible to the astronomy community is
needed. We propose a plan to enhance community involvement in the WFIRST
exoplanet microlensing survey in two different ways. First, we propose a set of
high level data products that will enable astronomers without detailed
microlensing expertise access to the statistical implications of the WFIRST
exoplanet microlensing survey data. And second, we propose the formation of a
WFIRST Exoplanet Microlensing Community Science Team that will open up
participation in the development of the WFIRST exoplanet microlensing survey to
the general astronomy community in collaboration for the NASA selected science
team, which will have the responsibility to provide most of the high level data
products. This community science team will be open to volunteers, but members
should also have the opportunity to apply for funding.
