Downsizing of galaxies vs upsizing of dark-halos in a Lambda-CDM cosmology
Cosmology and Nongalactic Astrophysics
2013-09-05 v1
Abstract
The mass assembly of a whole population of sub-Milky Way galaxies is studied by means of hydrodynamical simulations within the -CDM cosmology. Our results show that while dark halos assemble hierarchically, in stellar mass this trend is inverted in the sense that the smaller the galaxy, the later is its stellar mass assembly on average. Our star formation and supernovae feedback implementation in a multi-phase interstellar medium seems to play a key role on this process. However, the obtained downsizing trend is not yet as strong as observations show.
Cite
@article{arxiv.1309.0919,
title = {Downsizing of galaxies vs upsizing of dark-halos in a Lambda-CDM cosmology},
author = {Maria E. De Rossi and Vladimir Avila-Reese and Alejandro Gonzalez-Samaniego and Susana Pedrosa},
journal= {arXiv preprint arXiv:1309.0919},
year = {2013}
}
Comments
Accepted for publication in BAAA, Vol. 55, 2012. 4 pages, 1 figure, baaa.sty. More detailed results about this project can be found in the accompanying paper: arXiv 1308.2727