Cool Stars 14 - Submitted Abstract # 69
This version created on 05 October 2006

The Abundances of oxygen and carbon in the solar photosphere


Carlos Allende Prieto, University of Texas

The most recent estimates of the solar photospheric abundances of
oxygen and carbon are significantly smaller than the previously
accepted values.  These revised abundances are based on a
three-dimensional hydrodynamical model of the solar surface, which
reconciles estimates from multiple indicators available in the solar
spectrum.  Nonetheless, the updated abundances ruin the excellent
agreement between models of the interior of the Sun and helioseismic
measurements achieved with the older values.  This talk will focus on
what reasons we have to believe that the updated values are reliable,
and what fundamental tests are yet to be done.

----------------------------------