Chemical abundances in the galactic bulge:: Evidence for a fast enrichment

被引：0
|
作者：
Zoccali, M. [1 ]
Minniti, D. [1 ]
Barbuy, B. [1 ]
Hill, V. [1 ]
Lecureur, A. [1 ]
Renzini, A. [1 ]
Momany, Y. [1 ]
Gomez, A. [1 ]
Ortolani, S. [1 ]
机构：
[1] Pontificia Univ Catolica Chile, Dept Astron & Astrofis, Casilla 306, Santiago 22, Chile
来源：
XI IAU REGIONAL LATIN AMERICAN MEETING OF ASTRONOMY | 2006年 / 26卷
关键词：
galaxy : bulge; stars : abundances; stars : atmospheres;
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We derived oxygen abundances for 42 K giants in four fields towards the Galactic bulge. We present here the results for Oxygen, as measured from the forbidden line at 6300 angstrom. Oxygen shows a well defined trend with [Fe/H]. with [O/Fe] being higher in bulge stars than in thick disk ones, the latter already more oxygen enhanced than thin disk stars (Bensby, Feltzing, & Lundstrom 2004). This result supports the scenario that the bulge formed faster and probably earlier than the thick disk. http://www.astroscu.unam.mx/rmaa/RMxAC..26/PDF/RMxAC..26_mzoccali.pdf
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页码：88 / +
页数：2
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