Strong evidences for a nonextensive behavior of the rotation period in open clusters

@article{deFreitas2014StrongEF,
  title={Strong evidences for a nonextensive behavior of the rotation period in open clusters},
  author={Daniel B. de Freitas and M. M. F. Nepomuceno and Br'aulio B. Soares and J. R. P. Silva},
  journal={Europhysics Letters},
  year={2014},
  volume={108}
}
Time-dependent nonextensivity in a stellar astrophysical scenario combines nonextensive entropic indices qK derived from the modified Kawaler's parametrization, and q, obtained from rotational velocity distribution. These q's are related through a heuristic single relation given by , where t is the cluster age. In a nonextensive scenario, these indices are quantities that measure the degree of nonextensivity present in the system. Recent studies reveal that the index q is correlated to the… 
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