TY - RPRT TI - Characterizing planetary material accreted by cool helium-atmosphere white dwarfs using an exponentially decaying disc model AU - Mairi W O’Brien AU - Pier-Emmanuel Tremblay AU - Beth L Klein AU - Carl Melis AU - Detlev Koester AU - Andrew M Buchan AU - Dimitri Veras AU - Alexandra E Doyle PY - 2025 UR - https://ntrs.nasa.gov/citations/20843664386301 ID - 20843664386301 ER -