CAOSP abstracts, Volume: 27, No.: 3, year: 1998
- Author(s): YUSHCHENKO, A.V.; GOPKA, V.F.; KHOKHLOVA, V.L.; MUSAEV, F.A.;
BIKMAEV, I.F.
- Journal: Contributions of the Astronomical Observatory Skalnate Pleso,
vol. 27, no. 3, p. 365-367.
- Date: 04/1998
- Title: Atmospheric abundances of CP SB2 star components of equal masses.
II. 66 Eridani
- Keyword(s): STARS: ABUNDANCES, STARS: SPECTROSCOPIC BINARIES, STARS: CHEMICALLY
PECULIAR
- Pages: 365 -- 367
Abstract:
We report the results of abundance determination for the components
of the SB2 star 66 Eri (M(A)/M(B)=0.97) from high resolution CCD
echelle spectra with S/N > 100 taken with the 1-m telescope of Special
Astrophysical Observatory (Zelenchuck, Russia). The atmospheric parameters
of the components were determined using all available photometric,
spectrophotometric and spectral data. The abundances of 27 elements were
found. The abundances of components are different. The B component,
previously classified as an Hg-Mn star, does not show anomalies typical of this
group such as deficit of He, Al and excess of P, Ga but shows overabundances
of heavy elements which amount up to 4-5 dex. The A component also shows
moderate Mn and Ba excess. Lines of other heavy elements were not detected.
Estimates of upper limits to their abundances do not permit to exclude
completely the presence of fainter anomalies in the A component either.
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