Smith Castelli Analía
Argentina – Instituto de Astrofísica de La Plata
A large-scale study of the Sérsic Index using S-PLUS
The secular evolution of the galaxies remains an intriguing and unresolved question in the field of extragalactic research, particularly regarding the interplay between the galaxy’s internal processes and its environment. One approach to studying the secular stage of a galaxy involves quantifying its light distribution using the Sersic profile. Thanks to the advent of photometric surveys covering vast sky areas, it is now possible to conduct research with robust statistical analyses on this topic. The Southern Photometric Local Universe Survey (S-PLUS) stands out as a comprehensive 12-band optical survey conducted using an 80-cm robotic telescope at Cerro Tololo Interamerican Observatory. This survey offers a unique opportunity to undertake a project that explores the distribution of light and various photometric relations based on the Sersic index in three prominent southern galaxy clusters: Fornax, Antlia and Hydra. Additionally, a similar analysis will be carried out for the background (up to z < 0.5) and foreground galaxies found in those cluster fields. Our aim is to analyse the variation of the Sersic index with cluster centric distance, to constrain the morphology-environment realtion out to 6 virial radii, identifying possible substructures within the cluster. We will also study the multiwavelengths behaviour of the Sersic index, which can allow us to identify transitional objects. We will discuss possible implications of the galaxy cluster evolutionary stage, the morphologies of galaxies within it and the influence of the environment on the Sersic index of galaxies. Furthermore, the study intends to shed light on how the secular stage of galaxies may be influenced by their surrounding environment in the context of galaxy clusters.