This is the astro-ph blog of the Theoretical Modelling of Cosmic Structures group (TMoX) at the Max-Planck-Institute for Extraterrestrial Physics. We are an independent Max-Planck Research Group focusing on the various aspects in the formation and evolution of galaxies. Part of our focus is on the formation and evolution of early-type galaxies, super-massive black holes, the formation of the first structures in the universe and the enrichment history of the Universe. We are theoreticians using analytic modelling as well as numerical simulations in our work.

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19 October 2010

Dwarf archaeology

This paper examines two scenarios for the formation of ultra-faint dwarf galaxies (UFDs), representing the formation processes of the first galaxies. It is claimed that the first galaxies are chemical "one-shot" events, where only one (long-lived) stellar generation forms after the first, Population III, SN explosions. This conclusion is established using a comparison between the stellar abundance signatures as observed in the present-day UDFs, and the results of high-resolution hydro simulations.

Dwarf archaeology: Probing the first enrichment events with low-luminosity galaxies. Authors: Anna Frebel & Volker Bromm

1 comment:

  1. Chemical abundances are potentially important to teach us about galaxy formation. However, we need more observational data in order to reach the level of accuracy discussed here...