The Possible Origin of the Faint Fuzzy Star Clusters in NGC 1023 | Zendy

M. Fellhauer | Zendy; Pavel Kroupa | Zendy

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The Possible Origin of the Faint Fuzzy Star Clusters in NGC 1023

Author(s) -

M. Fellhauer,

Pavel Kroupa

Publication year - 2002

Publication title -

the astronomical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.61

H-Index - 271

eISSN - 1538-3881

pISSN - 0004-6256

DOI - 10.1086/342539

Subject(s) - astrophysics , physics , star cluster , galaxy , star formation , star (game theory) , astronomy , population , galaxy cluster , demography , sociology

In the lenticular galaxy NGC 1023 a new population of star clusters (``faintfuzzies'') was recently discovered by Larsen & Brodie. These clusters are foundinside the disc and are faint (23 < V < 24 mag) and extended with effectiveradii of r_eff approx. 7 to 15 pc. We present here N-body calculations of alikely formation-scenario through merging star clusters in clusters of starclusters (super-clusters). Such super-clusters are observed to form ininteracting galaxies. The resulting merger objects have masses comparable tothe ``faint fuzzies'' and show large effective radii (r_eff > 7 pc). Eventhough these objects are suffering from strong tidal forces they are able tosurvive and reach the estimated ages of the extended star clusters in NGC 1023.Comment: 19 pages, 12 figures, accepted by A

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