Surviving gas expulsion with substructure | Zendy

Paweł L. Lee | Zendy; S. P. Goodwin | Zendy

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Surviving gas expulsion with substructure

Author(s) -

Paweł L. Lee,

S. P. Goodwin

Publication year - 2016

Publication title -

monthly notices of the royal astronomical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.058

H-Index - 383

eISSN - 1365-8711

pISSN - 0035-8711

DOI - 10.1093/mnras/stw988

Subject(s) - substructure , physics , astrophysics , cluster (spacecraft) , virial theorem , galaxy , structural engineering , computer science , engineering , programming language

We investigate the reaction of clumpy stellar distributions to gas expulsion. We show that regions containing highly unbound substructures/subclusters after gas expulsion can produce a significant final bound cluster. The key quantity in determining if a region is able to form a bound cluster is the global virial ratio, and so regions must be looked at as a whole rather than by individual substructure/subclusters when determining if they might survive as a bound cluster.

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