A Theoretical Investigation of He i Line Profiles for the Spectroscopic Analysis of DB White Dwarfs
Abstract
Abstract We present a comprehensive investigation of He i line profile calculations used in the spectroscopic analyses of DB white dwarfs. Our study includes an in-depth photometric and spectroscopic analysis of all DB white dwarfs in Data Release 17 of the Sloan Digital Sky Survey, examining the effects of frequency sampling, Doppler broadening, line dissolution, broadening by neutral particles, and 3D hydrodynamical corrections on our results. More importantly, we compare the outcomes obtained from the semianalytical He i Stark profiles commonly used in DB white dwarf spectroscopic analyses with our recent calculations of Stark-broadened profiles derived from computer simulations.
Fields of Study & Subjects
Stellar
planetary
and galactic studies
Astronomy and Astrophysical Research
Astrophysics and Star Formation Studies
Publication details
- Journal / source
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Volume
- 1002
- Issue
- 1
- Pages
- 110–110
- Publication date
- 29 April 2026
- Language
- EN