6 papers · 1 filter
Confronting Hierarchical Clustering Models with Observations of Galaxy Pairs
Josefa Perez, Patricia Tissera, Diego G. Lambas +2
We investigate the star formation activity in galaxy pairs in chemical hydrodynamical simulations consistent with a Lambda-CDM scenario. A statistical analysis of the effects of ga…
Triggering star formation by galaxy-galaxy interactions
Patricia B. Tissera, Diego G. Lambas, M. Sol Alonso +1
We analyzed the effects of having a close companion on the star formation activity of galaxies in 8K galaxy pair catalog selected from the 2dFGRS. We found that, statistically, gal…
Redshift-Space Distortions of Group and Galaxy Correlations
Nelson D. Padilla, Manuel E. Merchán, Carlos A. Valotto +2
The two-point correlation function is computed for galaxies and groups of galaxies selected using 3-dimensional information from the Updated Zwicky Galaxy Catalog - (UZC). The reds…
Chemical Evolution of the Stellar and Gaseous Components of Galaxies in Hydrodynamical Cosmological Simulations
S. A. Cora, P. B. Tissera, D. G. Lambas +1
We present preliminary results on the effects of mergers on the chemical properties of galactic objects in hierarchical clustering scenarios. We adopt a hydrodynamical chemical cod…
Galaxy Formation and Chemical Evolution in Hierarchical Hydrodynamical Simulations
S. A. Cora, M. B. Mosconi, P. B. Tissera +1
We report first results of an implementation of a chemical model in a cosmological code, based on the Smoothed Particle Hydrodynamics (SPH) technique. We show that chemical SPH sim…
Analysis of metallicity effects in SPH cosmological simulations
P. B. Tissera, A. Mosconi, D. G. Lambas
We report preliminar results on a chemical model implemented in a hydrodynamical cosmological code. We compute the metallicity of the gaseous component in galactic halos at differe…