Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The contribution of primordial binaries to the blue straggler population
  in 47 Tucanae   The recent observation (Ferraro et al. 2003b) of the blue straggler
population in 47 Tucanae gives the first detailed characterization of their
spatial distribution in the cluster over its entire volume. Relative to the
light distribution, blue stragglers appear to be overabundant in the core and
at large radii. The observed surface density profile shows a central peak, a
zone of avoidance and a rise beyond twenty core radii. In light of these
findings we explored the evolution of blue stragglers mimicking their dynamics
in a multi-mass King model for 47 Tucanae. We find that the observed spatial
distribution can not be explained within a purely collisional scenario in which
blue stragglers are generated exclusively in the core through direct mergers.
An excellent fit is obtained if we require that a sizable fraction of blue
stragglers is generated in the peripheral regions of the cluster inside
primordial binaries that evolve in isolation experiencing mass-transfer.

3
The categories of this paper are: physics
37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
7
The categories of this paper are: hep-th
21
The categories of this paper are: adap-org
14
The categories of this paper are: math-ph
2
The categories of this paper are: math
19
The categories of this paper are: eess
18
The categories of this paper are: econ
13
The categories of this paper are: quant-ph
9
The categories of this paper are: nlin
20
The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg
36
The categories of this paper are: cmp-lg
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The categories of this paper are: atom-ph
11
The categories of this paper are: hep-lat