The double-lined spectroscopic binary alpha Andromedae: orbital elements and elemental abundances
Abstract
We performed a spectroscopic study of the SB2 Mercury-Manganese star alpha And. Our measurements of the secondary's radial velocities result in improved orbital elements. The secondary shows abundances typical of the metallic-line stars: a Ca deficiency, small overabundances of the iron-peak elements, and 1.0 dex overabundances of Sr and Ba.
- Publication:
-
Contributions of the Astronomical Observatory Skalnate Pleso
- Pub Date:
- April 1998
- DOI:
- 10.48550/arXiv.astro-ph/9805205
- arXiv:
- arXiv:astro-ph/9805205
- Bibcode:
- 1998CoSka..27..356R
- Keywords:
-
- STARS: BINARIES: SPECTROSCOPIC;
- STARS: ATMOSPHERES;
- Astrophysics
- E-Print:
- 3 pages, 1 figure, to appear in: Proc. of the 26th workshop of the European Working Group on CP stars, eds. P. North, A. Schnell and J. Ziznovsky, Contrib. Astr. Obs. Skalnate Pleso Vol. 27, No 3