Volume 125, Number 6, March 2019
|Number of page(s)||5|
|Section||Geophysics, Astronomy and Astrophysics|
|Published online||06 May 2019|
A nonextensive insight into the stellar initial mass function
1 Departamento de Física, Universidade Federal do Ceará - Caixa Postal 6030, Campus do Pici, 60455-900 Fortaleza, Ceará, Brasil
2 Department of Physics, University of Arkansas - 226 Physics Building, 825 West Dickson Street, Fayetteville, AR 72701, USA
3 NASA Goddard Space Flight Center - Greenbelt, MD 20771, USA
4 Departamento de Ciência e Tecnologia, Universidade Federal Rural do Semi- Árido - Campus Caraúbas, Rio Grande do Norte, Brasil
5 Departamento de Física, Universidade do Estado do Rio Grande do Norte - Mossoró, Brasil
Received: 11 February 2019
Accepted: 27 March 2019
In the present paper, we propose that the stellar initial mass distributions known as IMF are best fitted by q-Weibull distributions that emerge within nonextensive statistical mechanics. As a result, we show that Salpeter's slope of ∼2.35 is replaced when a q-Weibull distribution is used. Our results point out that the nonextensive entropic index q represents a new approach for understanding the process of the star-forming and evolution of massive stars.
PACS: 97.10.Bt – Star formation / 98.35.Ce – Mass and mass distribution / 05.90.+m – Other topics in statistical physics, thermodynamics, and nonlinear dynamical systems (restricted to new topics in section 05)
© EPLA, 2019
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