Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008iaus..252..425l&link_type=abstract
The Art of Modeling Stars in the 21st Century, Proceedings of the International Astronomical Union, IAU Symposium, Volume 252, p
Astronomy and Astrophysics
Astronomy
Stars: Abundances — Stars: Atmospheres — Stars: Chemically Peculiar — Stars: Evolution — Binaries: Spectroscopic
Scientific paper
We present an analysis of eight barium stars, providing their atmospheric parameters (Teff, log g, [Fe/H], ξt) and chemical abundances, based on the high signal-to-noise ratio and high resolution Echelle spectra. The s-process elements Y, Zr, Ba, La, Eu show obvious overabundance relative to the Sun. And Na, Mg, Al, Si, Ca, Sc, Ti, V, Cr, Mn, Ni show comparable abundances to the Solar ones. The results of theoretical model of wind accretion for binary systems can explain the observed abundance patterns of the neutron capture process elements in these Ba stars, which means that their overabundant heavy-elements could be caused by accreting the ejecta of AGB stars, the progenitors of the present white dwarf companions in the binary systems.
Deng Licai
Liang Ying-Chang
Liu Gang-Qin
No associations
LandOfFree
A Spectroscopic Study of Barium Stars does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A Spectroscopic Study of Barium Stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Spectroscopic Study of Barium Stars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-851916