Thousands of milky ways: Galaxy satellites and building blocks

Padilla N.; Lagos C.; Cora S.

Keywords: body simulations, Galaxies: evolution Galaxies: formation Galaxy: evolution Galaxy: formation Galaxy: halo Methods: N

Abstract

A semi-analytic model of galaxy formation with and without active galactic nuclei feedback is used to study the nature of possible building blocks (BBs) of z = 0 galaxies, including those of Milky-Way types. We find that BBs can show an important range of properties arising from environmental variables such as host halo mass, and whether a galaxy is a satellite within its host halo; the stellar formation histories are comparatively faster and the chemical enrichment is more efficient in BBs than in surviving satellites, in accordance with recent metallicity measurements for the Milky Way. These results can be used in combination with observational constraints to continue probing the ability of the cold dark-matter scenario to reproduce the history of galaxy demography in the Universe. © International Astronomical Union 2010.

Más información

Título según WOS: Thousands of Milky Ways: galaxy satellites and building blocks
Título según SCOPUS: Thousands of milky ways: Galaxy satellites and building blocks
Título de la Revista: Proceedings of the International Astronomical Union
Volumen: 5
Número: S262
Editorial: Cambridge University Press
Fecha de publicación: 2009
Página de inicio: 240
Página final: 243
Idioma: eng
DOI:

10.1017/S174392131000284X

Notas: ISI, SCOPUS