A Gaia Survey for Young Stars Associated with the Lupus Clouds
  I have used high-precision photometry and astrometry from the second data
release of the Gaia mission to perform a survey for young stars associated with
the Lupus clouds, which have distances of ~160 pc and reside within the Sco-Cen
OB association. The Gaia data have made it possible to distinguish Lupus
members from most of the stars in other groups in Sco-Cen that overlap with the
Lupus clouds, which have contaminated previous surveys. The new catalog of
candidate Lupus members should be complete for spectral types earlier than M7
at A_K<0.2 within fields encompassing clouds 1--4. I have used that catalog to
characterize various aspects of the Lupus stellar population. For instance, the
sequence of low-mass stars in Lupus is ~0.4 mag brighter than the sequence for
Upper Sco, which implies an age of ~6 Myr based an adopted age of 10-12 Myr for
Upper Sco and the change in luminosity with age predicted by evolutionary
models. I also find that the initial mass function in Lupus is similar to that
in other nearby star-forming regions based on a comparison of their
distributions of spectral types.
