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AGN feedback and the origin of the enhancement in early type galaxies - insights from the GAEA model
Gabriella De Lucia, Fabio Fontanot, Michaela Hirschmann
We take advantage of our recently published model for Galaxy Evolution and Assembly (GAEA) to study the origin of the observed correlation between [/Fe] and galaxy stellar mass.…
HI-selected Galaxies in Hierarchical Models of Galaxy Formation and Evolution
Anna Zoldan, Gabriella De Lucia, Lizhi Xie +2
In this work, we study the basic statistical properties of HI-selected galaxies extracted from six different semi-analytic models, all run on the same cosmological N-body simulatio…
H-based star formation laws in hierarchical models of galaxy formation
Lizhi Xie, Gabriella De Lucia, Michaela Hirschmann +2
We update our recently published model for GAlaxy Evolution and Assembly (GAEA), to include a self-consistent treatment of the partition of cold gas in atomic and molecular hydroge…
Physics of Galactic Metals: Evolutionary Effects due to Production, Distribution, Feedback & Interaction with Black Holes
Ena Choi, Jeremiah P. Ostriker, Thorsten Naab +5
We ask how the inclusion of various physical heating processes due to the metal content of gas affect the evolution of massive galaxies and compute a suite of cosmological hydrodyn…
Variations of the initial mass function in semi-analytical models: implications for the mass assembly and the chemical enrichment of galaxies in the GAEA model
Fabio Fontanot, Gabriella De Lucia, Michaela Hirschmann +3
In this work, we investigate the implications of the Integrated Galaxy-wide stellar Initial Mass Function (IGIMF) approach in the framework of the semi-analytic model GAEA (GAlaxy…
The Co-Evolution of Total Density Profiles and Central Dark Matter Fractions in Simulated Early-Type Galaxies
Rhea-Silvia Remus, Klaus Dolag, Thorsten Naab +4
We present evidence from cosmological hydrodynamical simulations for a co-evolution of the slope of the total (dark and stellar) mass density profile, gamma_tot, and the dark matte…