  We present results from a model of oxygen isotopic anomaly production through
selective photodissociation of CO within the collapsing proto-Solar cloud. Our
model produces a proto-Sun with a wide range of Delta_17O values depending on
the intensity of the ultraviolet radiation field. Dramatically different
results from two recent Solar wind oxygen isotope measurements indicate that a
variety of compositions remain possible for the solar oxygen isotope
composition. However, constrained by other measurements from comets and
meteorites, our models imply the birth of the Sun in a stellar cluster with an
enhanced radiation field and are therefore consistent with a supernova source
for 60Fe in meteorites.
