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Evolution of the Luminosity-Metallicity-Stellar Mass correlation in a hierarchical scenario

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

We study the evolution of the Stellar Mass-Metallicity Relation and the Luminosity-Metallicity Relation by performing numerical simulations in a cosmological framework. We find that the slope and the zero point of the Luminosity-Metallicity Relation evolve in such a way that, at a given metallicity, systems were ~3 mag brighter at z=3 compared to galaxies in the local universe, which is consistent with the observational trend. The local Stellar Mass-Metallicity Relation shows also a good agreement with recent observations. We identify a characteristic stellar mass M_c ~ 10^(10.2) M_sun/h at which the slope of the Stellar Mass-Metallicity Relation decreases for larger stellar masses. Our results indicate that M_c arises naturally as a consequence of the hierarchical building up of the structure.

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Maria Emilia De Rossi, Patricia Beatriz Tissera, Cecilia Scannapieco. 2006-03-02. Evolution of the Luminosity-Metallicity-Stellar Mass correlation in a hierarchical scenario. https://arxiv.org/abs/astro-ph/0603059

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