Pixel color-magnitude diagrams of galaxies in the Fornax cluster using S-PLUS images

FAIFER, F. R.; MENDES DE OLIVEIRA, C.; ESCUDERO, C. G.; SESTO, L. A.; HERPICH, F.; SMITH CASTELLI, A. V.; MESTRE, M.; BARBOSA, C E

Rosario

Congreso; 62 Reunión Anual de la AAA; 2020

Universidad Nacional de Rosario

Galaxy clusters are the largest gravitationally bound systems in the universe and, as such, play an important role in cosmological studies. According to the hierarchical clustering scenario, galaxy clusters continuously grow by accreting individual galaxies, as well as entire galaxy groups. Therefore, they have been regarded as powerful laboratories for studying the physical processes that might have influenced galaxies evolution, such as strong galaxy-galaxy interaction, ram pressure stripping, among others. All these environmental mechanisms result in different morphological properties for cluster and field galaxies. An important resource for studying these properties in a statistical manner are homogeneous and large image datasets covering diverse environments. In this sense, the wide-field images (1.4 deg2) obtained by the Southern Photometric Local Universe Survey (S-PLUS) in 12 optical bands, constitute a valuable tool for that type of study. In this work, we present an analysi s of pixel color-magnitude diagrams (pCMDs) for a sample of 17 galaxies located in the Fornax cluster. From S-PLUS images, we construct individual pCMDs for the galaxies such that each point corresponds to one pixel of a galaxy image. A pixel-by-pixel analysis provides a novel way of looking at the inner structures of galaxies and reveals information that an analysis of integrated light may not. In addition, pixel color-color diagrams (pCCDs) might provide information about the stellar population content.