A nonextensive approach for the angular momentum loss rate in low-mass stars

de Freitas Daniel Brito, danielbrito@dfte.ufrn.br, DFTE/UFRN
De Medeiros Jose Renan DFTE/UFRN

Abstract
A pioneering study by Schatzman showed that angular momentum loss from single stars is due to a well-known mechanism called magnetic braking. Several authors have subsequently studied the association between stellar rotation and magnetic activity. The behavior of these parameters as a function of stellar age suggests that rotational velocity decreases with time, {\it t}, as $t^{\alpha}$. The present study demonstrates that this behavior is consistent using Tsallis' nonextensive formalism, resulting in a new approach to understanding the stellar rotational scenario.