Title of article :
sr ratios in carbon-enhanced metal-poor stars
Author/Authors :
Dinah M. Allen، نويسنده , , Sean G. Ryan، نويسنده , , Silvia Rossi and Stelios A. Tsangarides، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2009
Abstract :
We present the results of [Ba/Eu] ratio determinations for a sample of Carbon-Enhanced Metal Poor (CEMP) stars, comparing them with other CEMP stars found in the literature for which abundances for both elements are available. The stellar spectra were observed at 4.2m William Herschel Telescope (WHT) on July/2003, using Utrecht Echelle Spectrograph (UES) with R ~ 52000 and S/N ~ 40. WHT covers a wavelength range of AA3700-5700.
Keywords :
stars: abundances , stars: chemically peculiar , Stars: carbon
Journal title :
Proceedings of the International Astronomical Union
Journal title :
Proceedings of the International Astronomical Union