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J/A+A/397/257 Chemical compositions of four barium stars (Liang+, 2003)
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table3.dat table5.dat
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Beginning of ReadMe :J/A+A/397/257 Chemical compositions of four barium stars (Liang+, 2003)
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Chemical compositions of four barium stars.
Liang Y.C., Zhao G., Chen Y.Q., Qiu H.M., Zhang B.
<Astron. Astrophys. 397, 257 (2003)>
=2003A&A...397..257L
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ADC_Keywords: Stars, barium ; Binaries, spectroscopic ; Equivalent widths ;
Abundances, peculiar
Keywords: stars: abundances - atmospheres - chemically peculiar - evolution -
binaries: spectroscopic
Abstract:
Chemical compositions of four barium stars are studied.
We obtain their alpha, iron peak and neutron-capture (n-capture)
process element abundances. The atomic data and measured equivalent
widths (EWs) of the related spectral lines are given. The abundance
errors caused by the combined effects of the uncertainties in
oscillator strengths loggf-values, equivalent widths (EWs) and stellar
atmospheric parameters (e.g. effective temperature Teff, surface
gravity logg, and microturbulent velocity xi_t_) are the total
abundance uncertainties. The individual and total abundance
uncertainties caused by these factors are given.
Objects:
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RA (2000) DE Designation(s)
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04 14 58.8 -00 59 51 HD 26886
04 18 33.8 +02 28 14 HD 27271
06 51 54.0 +06 36 25 HD 50082
11 22 49.6 +43 28 58 HD 98839
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