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19 papers · 1 filter
Cluster infall in the concordance LCDM model
Maximiliano C. Pivato, Nelson D. Padilla, Diego G. Lambas
We perform statistical analyses of the infall of dark-matter onto clusters in numerical simulations within the concordance LCDM model. By studying the infall profile around cluster…
Spectral evolution of star clusters in the Large Magellanic Cloud: I. Blue concentrated clusters in the age range 40-300 Myr
J. F. C. Santos, J. J. Claria, A. V. Ahumada +3
Integrated spectroscopy of a sample of 17 blue concentrated Large Magellanic Cloud (LMC) clusters is presented and its spectral evolution studied. The spectra span the range ~3600-…
Metallicity and colours in galaxy pairs in chemical hydrodynamical simulations
Josefa Perez, Patricia Tissera, Diego Garcia Lambas +2
Using chemical hydrodynamical simulations consistent with a Lambda-CDM model, we study the role played by mergers and interactions in the regulation of the star formation activity,…
Galaxy Pairs in cosmological simulations: Effects of interactions on star formation
M. Josefa Perez, Patricia B. Tissera, Diego G. Lambas +1
We carried out a statistical analysis of galaxy pairs in hydrodynamical Lambda-CDM simulations. We focused on the triggering of star formation by interactions and analysed the enha…
Effects of galaxy interactions in different environments
M. Sol Alonso, Diego G. Lambas, Patricia B. Tissera +1
We analyse star formation rates derived from photometric and spectroscopic data of galaxies in pairs in different environments using the 2dF Galaxy Redshift Survey (2dFGRS) and the…
Tidal dwarf galaxies candidates in a sample of minor merger of galaxies
D. L. Ferreiro, M. G. Pastoriza, M. C. Rickes
We present in this paper a list of candidates tidal dwarf galaxies selected among a sample of 117 HII region observed in 11 minor mergers. The classification of the HII regions was…