Volume 96, Number 1, October 2011
|Number of page(s)||6|
|Section||Geophysics, Astronomy and Astrophysics|
|Published online||12 September 2011|
On the rotation of ONC stars in the Tsallis formalism context
Departamento de Física, Universidade do Estado do Rio Grande do Norte - Mossoró, Brazil
Accepted: 10 August 2011
The theoretical distribution function of projected stellar rotational velocities is derived in the context of the Tsallis formalism. The distribution is used to estimate the average ⟨sin i⟩ for a stellar sample from the Orion Nebula Cloud (ONC), producing an excellent result when compared with observational data. In addition, the value of the parameter q obtained from the distribution of the projected rotational velocities reinforces the idea that there is a relation between this parameter and the age of the cluster.
PACS: 97.10.Kc – Stellar rotation / 97.10.Yp – Star counts, distribution, and statistics / 98.20.-d – Stellar clusters and associations
© EPLA, 2011
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