The star clusters of the Magellanic System

被引:0
|
作者
Santiago, Basilio X. [1 ]
机构
[1] Univ Fed Rio Grande do Sul, Inst Fis, Porto Alegre, RS, Brazil
来源
MAGELLANIC SYSTEM: STARS, GAS, AND GALAXIES | 2009年 / 256期
关键词
Magellanic Clouds; galaxies: star clusters; galaxles: stellar content; COLOR-MAGNITUDE DIAGRAMS; INITIAL MASS FUNCTION; RICH LMC CLUSTERS; PHYSICAL PARAMETERS; LENTICULAR GALAXIES; GLOBULAR-CLUSTERS; STELLAR CLUSTERS; CORE EXPANSION; CLOUD; AGE;
D O I
10.1017/S1743921308028287
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
More than 50 years have clapsed since the first studies of star clusters in the Magellanic Clouds. The wealth of data accumulated since then has not only revealed a large cluster system, but also a diversified one, filling loci in the age, mass and chemical abudance parameter space which are complementary to Galactic clusters. Catalogs and photometric samples currently available cover most of the cluster mass range. The expectations of relatively long cluster disruption timescales in the Clouds have been confirmed, allowing reliable assessments of the cluster initial mass function and of the cluster formation rate in the Clouds. Due to their proximity to the Galaxy, Magellanic clusters are also well resolved into stars. Analysis of colour-magnitude diagrams (CMDs) of clusters with different ages, masses and metallicities are useful tools to test dynamical effects such as mass loss due to stellar evolution, two-body relaxation, stellar evaporation, cluster interactions and tidal effects. The existence of massive and young Magellanic clusters has provided insight into the physics of cluster formation. The magnitudes and colours of different stellar types are confronted with stellar evolutionary tracks, thus constraining processes such as convective overshooting, stellar mass-loss, rotation and pre main-sequence evolution. Finally, the Magellanic cluster system may contribute with nearby and well studied counterparts of recently proposed types of extragalactic clusters, such as Faint Fuzzies and Diffuse Star Clusters.
引用
收藏
页码:69 / 80
页数:12
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