Merging of globular clusters within inner galactic regions. II. The Nuclear Star Cluster formation
arXiv:0801.1072 · doi:10.1086/588017
Abstract
In this paper we present the results of two detailed N-body simulations of the interaction of a sample of four massive globular clusters in the inner region of a triaxial galaxy. A full merging of the clusters takes place, leading to a slowly evolving cluster which is quite similar to observed Nuclear Clusters. Actually, both the density and the velocity dispersion profiles match qualitatively, and quantitatively after scaling, with observed features of many nucleated galaxies. In the case of dense initial clusters, the merger remnant shows a density profile more concentrated than that of the progenitors, with a central density higher than the sum of the central progenitors central densities. These findings support the idea that a massive Nuclear Cluster may have formed in early phases of the mother galaxy evolution and lead to the formation of a nucleus, which, in many galaxies, has indeed a luminosity profile similar to that of an extended King model. A correlation with galactic nuclear activity is suggested.
18 pages, 10 figures, 3 tables. Submitted to ApJ, main journal
References in corpus (3)
Cited by in corpus (26)
- Large scale kinematics and dynamical modelling of the Milky Way nuclear star cluster
- On the distance of the globular cluster M4 (NGC 6121) using RR Lyrae stars: I. optical and near-infrared Period-Luminosity and Period-Wesenheit relations
- The Globular Cluster Migratory Origin of Nuclear Star Clusters
- KMOS view of the Galactic Centre - II. Metallicity distribution of late-type stars
- Henize 2-10: the ongoing formation of a nuclear star cluster around a massive black hole
- Effects of Intermediate Mass Black Holes on Nuclear Star Clusters
- Metal-poor nuclear star clusters in two dwarf galaxies near Centaurus A suggesting formation from the in-spiraling of globular clusters
- The inner two degrees of the Milky Way. Evidence of a chemical difference between the Galactic Center and the surrounding inner bulge stellar populations
- Nuclear star cluster formation in star-forming dwarf galaxies
- Lack of nuclear clusters in dwarf spheroidal galaxies: implications for massive black holes formation and the cusp/core problem
- Revealing the Formation of the Milky Way Nuclear Star Cluster via Chemo-Dynamical Modeling
- Disentangling the formation mechanisms of nuclear star clusters
- Caught in formation: the nuclear-cluster-to-be in NGC 2139
- AMUSE-Field II. Nucleation of early-type galaxies in the field vs. cluster environment
- Probing the nuclear star cluster of galaxies with ELTs
- A Deep View into the Nucleus of the Sagittarius Dwarf Spheroidal Galaxy with MUSE. III. Discrete multi-component population-dynamical models based on the Jeans equations
- The RR Lyrae projected density distribution from the Galactic centre to the halo
- The spatial distribution of globular clusters in dwarf spheroidal galaxies and the timing problem
- Are we observing a NSC in course of formation in the NGC 4654 galaxy?
- Evidence for globular cluster collapse after a dwarf-dwarf merger: A potential nuclear star cluster in formation
- Modeling the Vertical Structure of Nuclear Starburst Discs: A Possible Source of AGN Obscuration at
- Sculpting the Stellar Cusp in the Galactic Center
- Observational constraints on the formation and evolution of the Milky Way nuclear star cluster with Keck and Gemini
- Study of central light distribution in nearby early-type galaxies hosting nuclear star clusters
- Formation of A Nuclear Star Cluster Through A Merger Event In The Low Surface Brightness Galaxy AGC 223218
- Massive black hole formation in dense stellar environments: Enhanced X-ray detection rates in high velocity dispersion nuclear star clusters