Searching for Dwarf Galaxies in $Gaia$ DR2 Phase-Space Data Using Wavelet Transforms

Elise Darragh-Ford, Ethan O. Nadler, Sean McLaughlin +1

We present a wavelet-based algorithm to identify dwarf galaxies in the Milky Way in $Gaia$ DR2 data. Our algorithm detects overdensities in 4D position--proper motion space,…