Mergers of Globular Clusters | Zendy

Sidney van den Bergh | Zendy

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Mergers of Globular Clusters

Author(s) -

Sidney van den Bergh

Publication year - 1996

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/310331

Subject(s) - globular cluster , horizontal branch , astrophysics , physics , velocity dispersion , magnitude (astronomy) , galaxy , dwarf galaxy , dispersion (optics) , astronomy , geology , paleontology , optics

Globular clusters with composite color-magnitude diagrams, such as NGC 1851,NGC 2808 and Fornax No. 3, might have formed by mergers. It is suggested thateach of these objects had two parent clusters, one with a red horizontal branchand another with a blue horizontal branch. Such mergers could have occurred ifboth ancestral objects were originally members of a single dwarf spheroidalgalaxy in which the internal velocity dispersion was low.

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