INDICATORS FOR CLUSTER SURVIVABILITY IN A DISPERSING CLOUD

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/27836

Title:	INDICATORS FOR CLUSTER SURVIVABILITY IN A DISPERSING CLOUD
Authors:	Chen,HC;Ko,CM
Contributors:	天文研究所
Keywords:	GIANT MOLECULAR CLOUDS;N-BODY INTEGRATION;STAR-FORMATION;GAS EXPULSION;DYNAMICAL EVOLUTION;STELLAR CLUSTERS;MASS FUNCTION;DISRUPTION;MODELS;IMPACT
Date:	2009
Issue Date:	2010-06-29 19:34:36 (UTC+8)
Publisher:	中央大學
Abstract:	We use N-body simulations to survey the response of embedded star clusters to the dispersal of their parent molecular cloud. The final stages of the clusters can be divided into three classes: the cluster (1) is destroyed, (2) has a loose structure, and (3) has a compact core. We are interested in three of the governing parameters of the parent cloud: (1) the mass, (2) the size, and (3) the dispersing rate. It is known that the final stage of the cluster is well correlated with the star formation efficiency (SFE) for systems with the same cluster and cloud profile. We deem that the SFE alone is not enough to address systems with clouds of different sizes. Our result shows that the initial cluster-cloud mass ratio at a certain Lagrangian radius and the initial kinetic energy are better indicators for the survivability of embedded clusters.
Relation:	ASTROPHYSICAL JOURNAL
Appears in Collections:	[天文研究所] 期刊論文

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