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

引用

页码：88 / +

页数：2

共 50 条

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