The effects on a core collapse of changes in the number and size of turbulent modes of velocity

Guillermo Arreaga-García*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


We consider 28 particle-based simulations aimed at comparing the gravitational collapse of a spherically symmetric, uniform gas core in which two extreme types of turbulent spectra of velocity have been initially induced, so that ∇· ∼v = 0 (14 simulations) and ∇×∼v = 0 (14 simulations). For all the simulations, the ratios of the kinetic energy and thermal energy to the gravitational energy were fixed at β=0.21 and α=0.24, respectively. Most of the simulations finish by forming a single protostar, except for two simulations that form a binary system of protostars. In order to quantify the differences (or similarities) between the two types of simulations, we calculate some integral properties of the resulting protostars, such as the mass Mf and the ratios αf and βf .

Original languageEnglish
Pages (from-to)361-384
Number of pages24
JournalRevista Mexicana de Astronomia y Astrofisica
Issue number2
StatePublished - Oct 2017

Bibliographical note

Funding Information:
The author gratefully acknowledges the computer resources, technical expertise, and support provided by the Laboratorio Nacional de Su-percómputo del Sureste de México through grant number O-2016/047.


  • Hydrodynamics
  • Methods: numerical
  • Stars: formation
  • Turbulence


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