INDICATORS FOR CLUSTER SURVIVABILITY IN A DISPERSING CLOUD

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題名:	INDICATORS FOR CLUSTER SURVIVABILITY IN A DISPERSING CLOUD
作者:	Chen,HC;Ko,CM
貢獻者:	天文研究所
關鍵詞:	GIANT MOLECULAR CLOUDS;N-BODY INTEGRATION;STAR-FORMATION;GAS EXPULSION;DYNAMICAL EVOLUTION;STELLAR CLUSTERS;MASS FUNCTION;DISRUPTION;MODELS;IMPACT
日期:	2009
上傳時間:	2010-06-29 19:34:36 (UTC+8)
出版者:	中央大學
摘要:	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.
關聯:	ASTROPHYSICAL JOURNAL
顯示於類別:	[天文研究所] 期刊論文

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