It is well known that environment has an important influence on galaxy formation and evolution including mass assembly, star formation, morphological evolution and the presence of nuclear activity. In order to study the influence of the environment in galaxy properties while testing for the presence of nuclear (AGN or star formation) activity, we look for systems with high galaxy density and low velocity dispersion to maximize the number of galaxy encounters. Compact Groups of Galaxies satisfy these two conditions as well as to be located in low density environments, this means that galaxy influences come only from the interactions with galaxies of the group. To carry out this study we have selected a sample of compact groups from the UZC catalogue (UZC-CGs) with all spectra available.
Nuclear activity in UZC Compact Groups / Martinez M.A.; Del Olmo A.; Focardi P. ;Perea J.. - STAMPA. - (2007), pp. 321-324. (Intervento presentato al convegno VII SCIENTIFIC MEETING OF THE SPANISH ASTRONOMICAL SOCIETY (SEA) tenutosi a Barcelona (Spain) nel 12-15 september 2006).
Nuclear activity in UZC Compact Groups.
FOCARDI, PAOLA;
2007
Abstract
It is well known that environment has an important influence on galaxy formation and evolution including mass assembly, star formation, morphological evolution and the presence of nuclear activity. In order to study the influence of the environment in galaxy properties while testing for the presence of nuclear (AGN or star formation) activity, we look for systems with high galaxy density and low velocity dispersion to maximize the number of galaxy encounters. Compact Groups of Galaxies satisfy these two conditions as well as to be located in low density environments, this means that galaxy influences come only from the interactions with galaxies of the group. To carry out this study we have selected a sample of compact groups from the UZC catalogue (UZC-CGs) with all spectra available.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
