Analysis of the Luminosity-Stellar Mass-Metallicity Relation in cosmological simulations
Abstract
We study the Luminosity-Metallicity Relation and the Stellar Mass-Metallicity Relation by performing chemo-dynamical simulations in a cosmological scenario. Our results predict a tight linear correlation between oxygen chemical abundance and luminosity for galactic systems up to z=3. The Luminosity-Metallicity Relation evolves with redshift in such a way that systems at a given oxygen abundance were ~3 dex brighter at z=3 compared to local ones, in good agreement with observations. We determin also a characteristic stellar mass M_c~10^(10.2) M_sun/h above which the Stellar Mass-Metallicity Relation starts to flatten. We encounter that this mass arises as a consequence of the hierarchical aggregation of structure in a LCDM universe and segregates two galactic populations with different astophysical properties.
Keywords
Cite
@article{arxiv.astro-ph/0603726,
title = {Analysis of the Luminosity-Stellar Mass-Metallicity Relation in cosmological simulations},
author = {Maria Emilia De Rossi and Patricia Beatriz Tissera and Cecilia Scannapieco},
journal= {arXiv preprint arXiv:astro-ph/0603726},
year = {2007}
}
Comments
To appear in the proceedings of the 11th Latin-American Regional IAU Meeting, (Dec 2005) Pucon, Chile