A New Generation of Line Profile Calculations for Non-ideal Hydrogen Plasmas

We have recently developed Xenomorph, a new simulation-based line profile code. In addition to removing many approximations inherent in the analytical approach of Vidal, Cooper, and Smith (1970; VCS) on which the standard line profiles used in astronomy are based, Xenomorph is the first simulation-based code that accommodates a prescription for occupation probability/continuum lowering and a fully randomized particle re-injection scheme. Across a wide range of temperatures and densities, we find that the resulting line profiles are most sensitive to the treatments of screening and occupation probability. We show that this has consequences for spectral fits of both laboratory plasmas and white dwarf stars.