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tests:collision:gc2_archive:challenge2

GC2: Challenge 2

Clusters with a mass function

PI: Miklos Peuten
Other participants: Mark Gieles, Adriano Agnello, Alice Zocchi, Antonio Sollima, Vincent Henault-Brunet, Anna Lisa Varri

Questions to address:

  1. Can the mass segregation be reproduced by multi-mass King models?
  2. How important is the effect of mass segregation?
  3. How correct is the assumption of energy equipartition?

Example of comparison between isotropic multi-mass model and N-body model with 100% retention fraction of stellar BHs:

Effect of metallicity

Density and velocity profiles of clusters with different mass function:

Importance for mass-to-light ratio: (Shanahan et al. to be submitted):

The relevant snapshots from simulations with a mass function are available in section B of the Mock data page.

The definition of the stellar types (KSTAR) used in the NBODY6 snapshots can be found in the Appendix section of the Mock data page.

Anisotropy in multi-mass models

Anisotropy profile of different components in multi-mass clusters. Left: N-body simulation with 10% retention fraction of black holes. Right: Three-component multi-mass Michie model.

Anisotropy profile of different mass components in Michie-King multi-mass model constructed with a dependence of the anisotropy radius on stellar mass.

Anisotropy profile of different components in multi-mass cluster, N-body simulation with 100% retention fraction of black holes.

tests/collision/gc2_archive/challenge2.txt · Last modified: 2015/08/31 13:25 by v.henault-brunet