Alkaline broadening in Stars

TL;DR

This paper introduces a new line broadening theory for complex atoms in stars, using symbolic software and quantum defect corrections, revealing narrower profiles than hydrogen and highlighting ion and electron effects.

Contribution

It presents a novel approach to line broadening calculations for multi-electron atoms in stellar atmospheres, incorporating quantum defects and symbolic computation.

Findings

Profiles are narrower than hydrogen lines.

Ion and electron effects are more significant than neutral collisions.

Quantum defect corrections improve line profile accuracy.

Abstract

Giving new insight for line broadening theory for atoms with more structure than hydrogen in most stars. Using symbolic software to build precise wave functions corrected for ds;dp quantum defects. The profiles obtained with that approach, have peculiar trends, narrower than hydrogen, all quantum defects used are taken from atomic database topbase. Illustration of stronger effects of ions and electrons on the alkaline profiles, than neutral-neutral collision mechanism. Keywords : Stars: fundamental parameters - Atomic processes - Line: profiles.