Abstract
The Large Synoptic Survey Telescope (LSST) will be a discovery machine for
the astronomy and physics communities, revealing astrophysical phenomena from
the Solar System to the outer reaches of the observable Universe. While many
discoveries will be made using LSST data alone, taking full scientific
advantage of LSST will require ground-based optical-infrared (OIR) supporting
capabilities, e.g., observing time on telescopes, instrumentation, computing
resources, and other infrastructure. This community-based study identifies,
from a science-driven perspective, capabilities that are needed to maximize
LSST science. Expanding on the initial steps taken in the 2015 OIR System
Report, the study takes a detailed, quantitative look at the capabilities
needed to accomplish six representative LSST-enabled science programs that
connect closely with scientific priorities from the 2010 decadal surveys. The
study prioritizes the resources needed to accomplish the science programs and
highlights ways that existing, planned, and future resources could be
positioned to accomplish the science goals.