articleMonthly Notices of the Royal Astronomical SocietyFeb 5, 2016BRONZE OA

The APOSTLE simulations: solutions to the Local Group's cosmic puzzles

TSTill SawalaCSCarlos S. FrenkAFAzadeh FattahiJFJulio F. NavarroRGR. G. Bower

University of Helsinki · Durham University · +8 more institutions

Indexed inarxivcrossrefdoaj

Abstract

The Local Group galaxies offer some of the most discriminating tests of models of cosmic structure formation. For example, observations of the Milky Way (MW) and Andromeda satellite populations appear to be in disagreement with N-body simulations of the ‘lambda cold dark matter’ (ΛCDM) model: there are far fewer satellite galaxies than substructures in CDM haloes (the ‘missing satellites’ problem); dwarf galaxies seem to avoid the most massive substructures (the ‘too-big-to-fail’ problem); and the brightest satellites appear to orbit their host galaxies on a thin plane (the ‘planes of satellites’ problem). Here we present results from apostle (A Project Of Simulating The Local Environment), a suite of…

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Topics & keywords

Topics
Keywords
  • Physics
  • Local Group
  • Astrophysics
  • Dark matter
  • Dwarf galaxy problem
  • Satellite galaxy
  • Galaxy
  • Dwarf spheroidal galaxy
UN Sustainable Development Goals
  • Reduced inequalities
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