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Analysis of the Luminosity-Stellar Mass-Metallicity Relation in cosmological simulations

Maria Emilia De Rossi·Patricia Beatriz Tissera·Cecilia Scannapieco
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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.

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Maria Emilia De Rossi, Patricia Beatriz Tissera, Cecilia Scannapieco. 2006-03-30. Analysis of the Luminosity-Stellar Mass-Metallicity Relation in cosmological simulations. https://arxiv.org/abs/astro-ph/0603726

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