Volume 84, Number 5, December 2008
Article Number 59001
Number of page(s) 6
Section Geophysics, Astronomy and Astrophysics
Published online 12 December 2008
EPL, 84 (2008) 59001
DOI: 10.1209/0295-5075/84/59001

Power law statistics and stellar rotational velocities in the Pleiades

J. C. Carvalho1, R. Silva1, 2, J. D. do Nascimento jr.1 and J. R. De Medeiros1

1   Universidade Federal do Rio Grande do Norte, UFRN, Departamento de Física - C. P. 1641, Natal, RN, 59072-970, Brazil
2   Universidade do Estado do Rio Grande do Norte - 59610-210, Mossoró, RN, Brasil

received 24 September 2008; accepted in final form 23 October 2008; published December 2008
published online 12 December 2008

In this paper we will show that, the non-Gaussian statistics framework based on the Kaniadakis statistics is more appropriate to fit the observed distributions of projected rotational velocity measurements of stars in the Pleiades open cluster. To this end, we compare the results from the $\kappa $ and q-distributions with the Maxwellian.

97.10.Kc - Stellar rotation.
05.10.Gg - Stochastic analysis methods (Fokker-Planck, Langevin, etc.).
05.90.+m - Other topics in statistical physics, thermodynamics, and nonlinear dynamical systems.

© EPLA 2008