IAFE   05512
INSTITUTO DE ASTRONOMIA Y FISICA DEL ESPACIO
Unidad Ejecutora - UE
artículos
Título:
Close galaxy interactions: Pre-processing galaxies at intermediate densities.
Autor/es:
PEREZ J.; TISSERA P.; PADILLA N.; ALONSO S.; LAMBAS, D. G.
Revista:
Boletín de la Asociación Argentina de Astronomía
Editorial:
Asociación Argentina de Astronomía
Referencias:
Año: 2009 vol. 52 p. 225 - 227
ISSN:
1669-9521
Resumen:
Recently, several observational works have provided evidence in favor of a pre-processing of galaxies at moderate environments.These evidences show that the transition of galaxies onto thered-sequence could take place in galaxy groups in the outskirt of clusters or in the infalling populations. Based on the evidence that interacting and merging systems are priviledged found  at intermediate densities,  we use the SDSS-DR4 data to analyse the role of mergers and close galaxy interactions as  environmental processes to  lead to evolutionary transformations.We explore the properties of galaxy pairs and merging systems  at different local and global density environments,comparing them with those of isolated galaxies in an unbiased control sample.