Program: GN-2019A-Q-303

The recent Gaia Data Release 2 has significantly increased the known white dwarf population. By cross-correlating the Gaia white dwarfs with different catalogs, we have identified 112 high confidence candidates with infrared excesses from dust disks. We propose to observe the final 21 targets suitable for 2019A to confirm the origin of the infrared excess. Combined with our on-going 2018B Gemini programs and existing near-infrared catalogs, we will have high quality JHK photometry for all 112 candidates. It is now widely accepted that dust disks around white dwarfs come from disintegrated asteroids. Our final sample will likely more the triple the current population of bright dusty white dwarfs and it will allow us to constrain the properties of extreme planetary systems.