Other
Scientific paper
Jun 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011fvc..confp..50s&link_type=abstract
Fornax, Virgo, Coma et al., Stellar Systems in High Density Environments, Posters from the Conference held 27 June - 1 July, 201
Other
Scientific paper
The influence of the environment in the formation of the galaxies we see today is still a key question. The mechanisms involved an the moment at which they occur in the field or in clusters and groups of galaxies have not been clearly identified yet. In this context the study of stellar systems belonging to high and low density environments becomes relevant to provide clues about these important issues.
In particular, the study of compact groups is interesting as their galaxy space density is similar to that found in the central regions of rich clusters. In addition, they show low velocity dispersions which allow to observe gravitational interactions in progress.
The idea that globular clusters (GCs) harbour important clues in relation with the early stages of galaxy formation is a widely accepted concept. GCS are used today to trace the early history of galaxy formation processes. But, on the other hand, Hickson groups are excellent laboratories to test the influence of the environment on the GCs formation itself and how the continuous gravitational encounters modify their characteristics.
In this context we present preliminary results of the first study of the globular cluster population of galaxies in the Hickson compact group HCG 44, in order to investigate the effect of this high-density environment on the formation and evolution of globular cluster systems. This work is based on high quality multi-band photometry performed by psf fitting on deep g', r', i' and z' images obtained with Gemini+GMOS. In this poster we analyze the total globular cluster population and we investigate wether in our fields there are dwarf galaxy candidates to be members of the group.
Escudero Carlos
Faifer Favio
Gomes Jean Michel
Gonzalez Nelida
Smith Castelli Analia Viviana
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