CAOSP abstracts, Volume: 25, year: 1995
- Author(s): ZIZNOVSKY, J.; ZVERKO, J.
- Journal: Contributions of the Astronomical Observatory Skalnate Pleso,
vol. 25, p. 39-44.
- Date: 09/1995
- Title: Stratification of chromium abundance in CP-stars Alpha2 Canum Venaticorum, Epsilon Ursae Majoris, Sirius and Vega
- Keyword(s): STARS, CP-STARS, STARS ATMOSPHERES, INDIVIDUAL STARS: ALPHA2 CVN,
EPSILON UMA, SIRIUS AND VEGA, ELEMENTAL ABUNDANCES, VERTICAL STRATIFICATION,
SPECTRUM: SYNTHESIS
- Pages: 39 -- 44
Abstract:
High S/N Reticon spectra of Alpha2 CVn, Epsilon UMa, Sirius and Vega are
investigated to estimate the Cr-abundance and its possible depth distribution.
While three of the stars show practically normal (homogeneous) distribution of
the element, Alpha2 CVn was found to be anomalous: the abundance of chromium
decreases outwards of the atmosphere.
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