A Merger Model and Globular Cluster Formation
1995; IOP Publishing; Volume: 449; Linguagem: Inglês
10.1086/176083
ISSN1538-4357
AutoresSangjin Lee, David N. Schramm, Grant J. Mathews,
Tópico(s)Galaxies: Formation, Evolution, Phenomena
Resumoview Abstract Citations (13) References (28) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS A Merger Model and Globular Cluster Formation Lee, Sangjin ; Schramm, David N. ; Mathews, Grant J. Abstract We propose a self-consistent model for globular cluster formation in, but not limited to, our Galaxy, based on the merger model of Mathews & Schramm (1993). Stars and star clusters form in bursts at the merging interfaces as protogalactic clouds collide. We describe the formation of those star clusters with a simple schematic Ansatz which takes into account the thermal and Kelvin-Helmholtz instabilities. It is shown that this model is consistent with many observational properties such as the age and metallicity distributions of globular clusters, the overall number of globular clusters, and the near constancy of the numbers of globular clusters in different size host galaxies. Most of the features of this merger model are insensitive to choices of parameters. However, the model does not produce as many high-metallicity clusters as observed. Possible explanations for this are presented. Publication: The Astrophysical Journal Pub Date: August 1995 DOI: 10.1086/176083 arXiv: arXiv:astro-ph/9408061 Bibcode: 1995ApJ...449..616L Keywords: GALAXY: GLOBULAR CLUSTERS: GENERAL; STARS: FORMATION; Astrophysics E-Print: 14 pages (10 figures available from sjlee@oddjob.uchicago.edu) full text sources arXiv | ADS |
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