Chemical stratification in the atmosphere of Ap star HD 133792

2006/09/12 by O. Kochukhov, V. V. Tsymbal, V. Tsymbal +3 · 69 citations
Physics and Astronomy · #Astro and Planetary Science #Astrophysics #Astrophysics and Star Formation Studies #Atmosphere (unit) #Atmospheric sciences #Biology #Context (archaeology) #Geology #Meteorology #Optics #Physics #Radiative transfer #Settling #Stars #Stellar atmosphere #Stellar, planetary, and galactic studies #Stratification (seeds) #Thermodynamics #astro-ph

paper · pdf · doi:10.1051/0004-6361:20065607

published in Astronomy and Astrophysics 460(3), 831-842 (EDP Sciences) · Accepted by A&A; 12 pages, 9 figures

arxiv created 2006/09/12 · openalex publication_date 2006/09/13 · arxiv updated 2009/12/01 · openalex created_date 2022/08/01 · openalex updated_date 2026/08/01

Abstract

Context.High spectral resolution studies of cool Ap stars reveal conspicuous anomalies of the shape and strength of many absorption lines. This is a signature of large atmospheric chemical gradients (chemical stratification) produced by the selective radiative levitation and gravitational settling of chemical species.

Citations

• Hyperfine Structure Measurements of Neutral Manganese with Fourier Transform Spectroscopy

Cited by

• Modelling the light variability of the Ap starε Ursae Majoris
• The Paschen-Back effect in the Li I 6708 Å line and the presence of lithium in cool magnetic Ap stars
• Magnetic Doppler imaging ofα2Canum Venaticorum in all four Stokes parameters