A Machine-Learning Compositional Study of Exoplanetary Material Accreted Onto Five Helium-Atmosphere White Dwarfs with $\text{cecilia}$

Mariona Badenas-Agusti, Siyi Xu, Andrew Vanderburg +8

We present the first application of the Machine Learning (ML) pipeline $\text{cecilia}$ to determine the physical parameters and photospheric composition of five metal-polluted H…