Constraining globular cluster formation through studies of young massive clusters - II. A single stellar population young massive cluster in NGC 34

被引：65
作者：
Cabrera-Ziri, I. [1 ]
Bastian, N. [1 ]
Davies, B. [1 ]
Magris, G. [2 ]
Bruzual, G. [3 ]
Schweizer, F. [4 ]
机构：
[1] Liverpool John Moores Univ, Astrophys Res Inst, Liverpool L3 5RF, Merseyside, England
[2] Ctr Invest Astron, Merida 5101A, Venezuela
[3] UNAM, CRyA, Morelos 58089, Michoacan, Mexico
[4] Carnegie Observ, Pasadena, CA 91101 USA
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2014年 / 441卷 / 03期
关键词：
globular clusters: general; galaxies: star clusters: general; galaxies: star clusters: individual: NGC 34 Cluster 1; DOUBLE MAIN-SEQUENCE; AGE STAR-CLUSTERS; EVOLUTIONARY SEQUENCES; RADIATIVE OPACITIES; MULTIPLE POPULATIONS; MODELS; I; PARAMETERS; RESOLUTION; ROTATION;
D O I：
10.1093/mnras/stu764
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Currently there are two competing scenarios to explain the origin of the stellar population in globular clusters (GCs). The main difference between them is whether or not multiple events of star formation took place within GCs. In this paper, we present the star formation history (SFH) of Cluster 1, a massive young cluster in NGC 34 (similar to 10(7)M(aS (TM))). We use DynBaS (Dynamical Basis Selection), a spectrum fitting algorithm, to retrieve the SFH and find that Cluster 1 is consistent with a single stellar population of solar metallicity with an age of 100 +/- 30 Myr and a mass of 1.9 +/- 0.4 x 10(7)M(aS (TM)). These results are in conflict with the expectations/predictions of the scenarios that invoke extended or multiple episodes within 30-100 Myr of the initial star formation burst in young massive clusters.
引用
收藏
页码：2754 / 2759
页数：6
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