Star clusters as building blocks for dSph galaxies formation
P. Assmann (1), M. Fellhauer (1), M.I. Wilkinson (2) ((1) Departamento, de Astronomia, Universidad de Concepcion, Chile, (2) Department of Physics, and Astronomy, University of Leicester, UK)
TL;DR
This paper demonstrates through numerical simulations that the evolution of star cluster complexes within dark matter haloes can account for the formation of the luminous components of dwarf spheroidal galaxies, shedding light on their origins.
Contribution
It introduces a numerical model showing how star cluster complexes evolve in dark matter haloes to form dSph galaxy components, a novel explanation for their formation.
Findings
Star cluster complexes can merge and evolve into dSph galaxy components.
Dark matter haloes influence the dynamical evolution of star clusters.
Simulations reproduce observed properties of dSph galaxies.
Abstract
We study numerically the formation of dSph galaxies. Intense star bursts, e.g. in gas-rich environments, typically produce a few to a few hundred young star clusters, within a region of just a few hundred pc. The dynamical evolution of these star clusters may explain the formation of the luminous component of dwarf spheroidal galaxies (dSph). Here we perform a numerical experiment to show that the evolution of star clusters complexes in dark matter haloes can explain the formation of the luminous components of dSph galaxies.
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