Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Comparative study between N-body and Fokker-Planck simulations for
  rotating star clusters - II. 2-component models   To understand the effects of the initial rotation on the evolution of the
tidally limited clusters with mass spectrum, we have performed N-body
simulations of the clusters with different initial rotations and compared the
results with those of the Fokker-Planck (FP) simulations. We confirmed that the
cluster evolution is accelerated by not only the initial rotation but also the
mass spectrum. For the slowly rotating models, the time evolutions of mass,
energy and angular momentum show good agreements between N-body and FP
simulations. On the other hand, for the rapidly rotating models, there are
significant differences between these two approaches at the early stage of the
evolutions because of the development of bar instability in N-body simulations.
The shape of the cluster for N-body simulations becomes tri-axial or even
prolate, which cannot be produced by the 2-dimensional FP simulations. The
total angular momentum and the total mass of the cluster decrease rapidly while
bar-like structure persists. After the rotational energy becomes smaller than
the critical value for the bar instability, the shape of the cluster becomes
nearly axisymmetric again, and follows the evolutionary track predicted by the
FP equation. We have confirmed again that the energy equipartiton is not
completely achieved when M2/M1(m2>/m1)^(3/2) > 0.16. By examining the angular
momentum at each mass component, we found that the exchange of angular momentum
between different mass components occurs, similar to the energy exchange
leading to the equipartition.

2
The categories of this paper are: math
22
The categories of this paper are: chao-dyn
0
The categories of this paper are: hep-ph
8
The categories of this paper are: hep-ex
19
The categories of this paper are: eess
35
The categories of this paper are: mtrl-th
20
The categories of this paper are: acc-phys
7
The categories of this paper are: hep-th
31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
34
The categories of this paper are: chem-ph
30
The categories of this paper are: q-alg
4
The categories of this paper are: cond-mat
15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin