Milky way satellite properties in a ΛcDM universe

Research output: Chapter in Book/Report/Conference proceedingConference contribution


We revisit the issue of whether the basic properties of satellite galaxies around the Milky Way, such as their number density, radial distribution, and central mass, can be reproduced within current cosmological ΛCDM-based models. For this purpose we combine merger trees extracted from very high resolution N-body simulations with three different semi-analytic model (SAM) codes. These merger trees describe the hierarchical assembly of a Milky Way-like halo, while the SAMs are used to predict the relationship between the dark matter (sub)haloes and observable galaxy properties, allowing us to make a direct and detailed comparison with observational data. We conclude that both the luminosity function and the observed relation between luminosity and central mass can be naturally accounted for within the (Λ) Cold Dark Matter paradigm.

Original languageEnglish (US)
Title of host publicationHunting for the Dark
Subtitle of host publicationThe Hidden Side of Galaxy Formation - Proceedings of the International Conference
Number of pages4
StatePublished - 2010
EventInternational Conference "Hunting for the Dark: The Hidden Side of Galaxy Formation" - Qawra, Malta
Duration: Oct 19 2009Oct 23 2009

Publication series

NameAIP Conference Proceedings
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


OtherInternational Conference "Hunting for the Dark: The Hidden Side of Galaxy Formation"

ASJC Scopus subject areas

  • General Physics and Astronomy


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