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Chemical stratification in the atmosphere of Ap star HD 133792
- Source :
- Astronomy and Astrophysics; December 2006, Vol. 460 Issue: 3 p831-842, 12p
- Publication Year :
- 2006
-
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.
Details
- Language :
- English
- ISSN :
- 00046361 and 14320746
- Volume :
- 460
- Issue :
- 3
- Database :
- Supplemental Index
- Journal :
- Astronomy and Astrophysics
- Publication Type :
- Periodical
- Accession number :
- ejs53176285
- Full Text :
- https://doi.org/10.1051/0004-6361:20065607