Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The evolution of two stellar populations in globular clusters I. The
  dynamical mixing timescale   We investigate the long-term dynamical evolution of two distinct stellar
populations of low-mass stars in globular clusters in order to study whether
the energy equipartition process can explain the high number of stars
harbouring abundance anomalies seen in globular clusters. We analyse N-body
models by artificially dividing the low-mass stars (m<0.9 Msun) into two
populations: a small number of stars (second generation) consistent with an
invariant IMF and with low specific energies initially concentrated towards the
cluster-centre mimic stars with abundance anomalies. These stars form from the
slow winds of fast-rotating massive stars. The main part of low-mass (first
generation) stars has the pristine composition of the cluster. We study in
detail how the two populations evolve under the influence of two-body elaxation
and the tidal forces due to the host galaxy.Stars with low specific energy
initially concentrated toward the cluster centre need about two relaxation
times to achieve a complete homogenisation throughout the cluster. For
realistic globular clusters, the number ratio between the two populations
increases only by a factor 2.5 due to the preferential evaporation of the
population of outlying first generation stars. We also find that the loss of
information on the stellar orbital angular momentum occurs on the same
timescale as spatial homogenisation.

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The categories of this paper are: cond-mat
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The categories of this paper are: plasm-ph
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The categories of this paper are: physics
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The categories of this paper are: acc-phys
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The categories of this paper are: nlin
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The categories of this paper are: nucl-th
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The categories of this paper are: chao-dyn
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The categories of this paper are: atom-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: math-ph
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The categories of this paper are: math
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The categories of this paper are: comp-gas
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The categories of this paper are: gr-qc
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The categories of this paper are: mtrl-th
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The categories of this paper are: q-fin
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The categories of this paper are: patt-sol