Globular Clusters in the Galactic Bulge

被引：62

作者：

Bica, E. ^{[1
]}

Ortolani, S. ^{[2
,3
]}

Barbuy, B. ^{[4
]}

机构：

[1] Univ Fed Rio Grande do Sul, Dept Astron, Ave Bento Goncalves 9500, BR-91501970 Porto Alegre, RS, Brazil

[2] Univ Padua, Dipartimento Fis & Astron, I-35122 Padua, Italy

[3] INAF Osservatorio Astron Padova, Vicolo Osservatorio 5, I-35122 Padua, Italy

[4] Univ Sao Paulo, IAG, Rua Matao 1226,Cidade Univ, BR-05508900 Sao Paulo, Brazil

来源：

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA | 2016年 / 33卷

基金：

巴西圣保罗研究基金会;

关键词：

galaxy: bulge; galaxy: globular clusters; RESOLUTION INFRARED-SPECTRA; HORIZONTAL-BRANCH STARS; RR LYRAE STARS; SPACE VELOCITIES; MILKY-WAY; ABUNDANCE ANALYSIS; CHEMICAL EVOLUTION; METALLICITY DISTRIBUTION; STELLAR POPULATIONS; PROPER MOTIONS;

D O I：

10.1017/pasa.2015.47

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A view of the Galactic bulge by means of their globular clusters is fundamental for a deep understanding of its formation and evolution. Connections between the globular cluster and field star properties in terms of kinematics, orbits, chemical abundances, and ages should shed light on different stellar population components. Based on spatial distribution and metallicity, we define a probable best list of bulge clusters, containing 43 entries. Future work on newly discovered objects, mostly from the VVV survey, is suggested. These candidates might alleviate the issue of missing clusters on the far side of the bulge. We discuss the reddening law affecting the cluster distances towards the centre of the Galaxy, and conclude that the most suitable total-to-selective absorption value appears to be R-v=3.2, in agreement with recent analyses. An update of elemental abundances for bulge clusters is provided.

引用

页数：14

共 50 条

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