Abstract

CASTELLANOS, Diego F.  and  CASAS-MIRANDA, Rigoberto A.. LOOKING FOR POSSIBLE DARK MATTER FREE PROGENITORS OF THE CARINA DWARF SPHEROIDAL GALAXY USING N-BODY SIMULATIONS. Momento [online]. 2018, n.56, pp.1-16. ISSN 0121-4470.  https://doi.org/10.15446/mo.n56.69820.

We present a study of the evolution of several different dark matter free possible progenitors of the Carina dSph galaxy, one of the satellites of the Milky Way, using Newtonian numerical N-body simulations. It was not possible to reproduce all the observed properties of Carina, therefore a possible dark matter free progenitor of it was not found; nevertheless, progenitors with initial mass 1 χ 107Μʘ and Plummer radii 0.5 and 0.6 kpc reproduced the observational values of Carina for three of the five studied variables (half light radius, line-of-sight velocity dispersion and galactocentric distance). Thus, those satellites could be the starting point for further work about the origin of the Carina dwarf galaxy.

Keywords : Galaxies: Carina; Galaxies: dwarf; Galaxies: formation; Dark matter.

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