Pixel Colour-Magnitude Diagram Analysis of the Fornax Cluster using S-PLUS images (Part II)

ESCUDERO, C. G.; SMITH CASTELLI, A. V.; FAIFER, F. R.; SESTO, L. A.

La Plata

Otro; IX La Plata International School (LAPIS) on Astronomy and Geophysics; 2020

Facultad de Ciencias Astronómicas y Geofísicas, UNLP.

Galaxy clusters are the largest gravitationally bound systems in the universe and therefore play an important role in cosmological studies. They contain a wide variety of stellarsystems, ranging from the cluster central galaxy, all kinds of early- and late-type galaxies from the giant to the dwarf scale; to very small stellar systems like compact ellipticalgalaxies, ultra-compact dwarf galaxies, and globular clusters. According to the hierarchical clustering scenario, galaxy clusters continuously grow by accreting individualgalaxies, as well as entire galaxy groups. Therefore, they have been regarded as powerful laboratories for studying the evolution of galaxies in a dense environment where thephysical properties of these galaxies might have been influenced by many different mechanisms, such as strong galaxy-galaxy interaction, harassment, ram pressure stripping,and starvation. All these cluster environmental processes result in different properties for cluster and field galaxies. An important resource for studying galaxy evolution is theavailability of homogeneous and complete samples of galaxy observations that can be used statistically to investigate the properties of the galaxies in these environments. Inthis sense, the images (1.4 deg2) obtained by the Southern Photometric Local Universe Survey (S-PLUS; Mendes de Oliveira et al. 2019) in 12 optical bands are a valuabletool for this type of study.