Interstellar Extinction Curve Variations Toward the Inner Milky Way: A Challenge to Observational Cosmology

David M. Nataf, Oscar A. Gonzalez, Luca Casagrande +18

We investigate interstellar extinction curve variations toward $\sim$4 deg${}^2$ of the inner Milky Way in $VIJ{K}_s$ photometry from the OGLE-III and $VVV$ surveys, with supportin…