Constraints on the dust extinction law of the Galaxy with Swift/UVOT, Gaia and 2MASS

I. Ferreras, M. Tress, G. Bruzual +6

We explore variations of the dust extinction law of the Milky Way by selecting stars from the Swift/UVOT Serendipitous Source Catalogue, cross-matched with Gaia DR2 and 2MASS to pr…