Precise calculations of astrophysically important allowed and forbidden transitions of Xe VIII

TL;DR

This paper uses advanced relativistic calculations to determine precise transition parameters of Xe VIII, aiding astrophysical observations and density estimations in stellar environments.

Contribution

It provides highly accurate transition line parameters for Xe VIII using relativistic coupled-cluster methods, including oscillator strengths, transition probabilities, and lifetimes.

Findings

Calculated transition line parameters for Xe VIII

Provided data for astrophysical density estimations

Enhanced accuracy in modeling stellar spectra

Abstract

The present work reports transition line parameters for Xe VIII, which are potentially important for astrophysics in view of recent observations of multiply ionized xenon in hot white dwarfs. The relativistic coupled-cluster method is employed here to calculate the E1, E2, and M1 transition line parameters with high accuracy. The E1 oscillator strengths and probabilities of E2 and M1 transitions are determined using theoretical amplitudes and experimental energy values. The calculated branching ratios and the lifetimes are supplemented to the transition parameters. Accurate presentation of these calculated data is crucial for density estimation in several stellar and inter-stellar media.