ScholarLens Back to search
1990•The Astrophysical JournalRequires access

The determination of element abundances in the solar neighborhood from B-type stellar spectra. II - Non-LTE calculations for AR II

D. E. Holmgren, P. J. Brown, P. L. Dufton, F. P. Keenan

Open publisher page 16 citations

Abstract

Non-LTE radiative transfer calculations for argon are presented for models with effective temperatures in the range 17,500-30,000 K and a logarithmic argon abundance of 6.50 on the scale log (H) = 12. These are used to analyze high-resolution and signal-to-noise observations of weak Ar II lines in the spectra of B-type stars. A mean argon abundance of 6.50 + or - 0.05 dex is found, providing a reliable estimate of the current cosmic argon abundance in the solar neighborhood.

About this research paper

What this paper is about

Non-LTE radiative transfer calculations for argon are presented for models with effective temperatures in the range 17,500-30,000 K and a logarithmic argon abundance of 6.50 on the scale log (H) = 12. These are used to analyze high-resolution and signal-to-noise observations of weak Ar II lines in the spectra of B-type stars. A mean argon abundance of 6.50 + or - 0.05 dex is found, providing a reliable estimate of the current cosmic argon abundance in the solar neighborhood.

Why it matters

OpenAlex reports 16 citations for this work. Citation counts describe recorded attention and do not establish research quality.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

Non-LTE radiative transfer calculations for argon are presented for models with effective temperatures in the range 17,500-30,000 K and a logarithmic argon abundance of 6.50 on the scale log (H) = 12. These are used to analyze high-resolution and signal-to-noise observations of weak Ar II lines in the spectra of B-type stars. A mean argon abundance of 6.50 + or - 0.05 dex is found, providing a reliable estimate of the current cosmic argon abundance in the solar neighborhood.

Key concepts: Physics, Astrophysics, Stars, Spectral line, Argon, Radiative transfer, Stellar atmosphere, Abundance (ecology)

Related papers

Related paper 1Related paper 2Related paper 3
Back to paper searchBrowse research topicsOriginal source
The determination of element abundances in the solar neighborhood from B-type stellar spectra. II - Non-LTE calculations for AR II — Research Paper | ScholarLens