s/r ratios in carbon-enhanced metal-poor stars

被引：0
|
作者：
Allen, Dinah M. [1 ]
Ryan, Sean G. [2 ,3 ]
Rossi, Silvia [1 ]
Tsangarides, Stelios A.
机构：
[1] Univ Sao Paulo, Inst Astron Geofis & Ciencias Atmosfer, Rua Matao 1226, BR-05508900 Sao Paulo, Brazil
[2] Univ Hertfordshire, STRI, Ctr Astrophys Res, Hatfield, Herts, England
[3] Univ Hertfordshire, Sch Phys Astron & Math, Hatfield, Herts, England
来源：
CHEMICAL ABUNDANCES IN THE UNIVERSE: CONNECTING FIRST STARS TO PLANETS | 2010年 / 265期
关键词：
stars: abundances; stars: carbon; stars: chemically peculiar;
D O I：
10.1017/S1743921310000335
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
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 similar to 52000 and S/N similar to 40. WHT covers a wavelength range of lambda lambda 3700-5700.
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页码：118 / +
页数：2
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