The possible origin of the faint fuzzy star clusters in NGC 1023

被引：27

作者：

Fellhauer, M ^{[1
]}

Kroupa, P ^{[1
]}

机构：

[1] Univ Kiel, Inst Theoret Phys & Astrophys, D-24098 Kiel, Germany

来源：

ASTRONOMICAL JOURNAL | 2002年 / 124卷 / 04期

关键词：

galaxies : individual (NGC 1023); galaxies : interactions; galaxies : star clusters; methods : n-body simulations;

D O I：

10.1086/342539

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In the lenticular galaxy NGC 1023 a new population of star clusters ("faint fuzzies") was recently discovered by Larsen & Brodie. These clusters are found inside the disk and are faint (23less than or equal toVless than or equal to24 mag) and extended, with effective radii of r(eff)approximate to7 to 15 pc. We present N-body calculations of a likely formation scenario through merging star clusters in clusters of star clusters (superclusters). Such superclusters are observed to form in interacting galaxies. The resulting merger objects have masses comparable to the faint fuzzies and show large effective radii (r(eff)>7 pc). Even though these objects are suffering from strong tidal forces they are able to survive and reach the estimated ages of the extended star clusters in NGC 1023.

引用

页码：2006 / 2011

页数：6

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