Studying the star formation history of the dwarf galaxy CGCG014-074

GUEVARA, NATALIA; ESCUDERO, CARLOS; FAIFER, FAVIO

Seúl

Workshop; Gemini Observatory Science Meeting 2022; 2022

Gemini Observatory

Early-type dwarf galaxies (dE, dS0) are the most common galaxy type in nearby galaxy clusters and groups. According to the hierarchical theory of formation and evolution of the large-scale structures in the Universe, dwarf galaxies would be the building blocks of those bright galaxies we observe today. In particular, the formation scenarios for dE and dS0 focus mainly on the transformation of late-type to early-type galaxies through different processes (e.g., interactions, mergers), including environmental effects in high-density environments (e.g., ram-pressure stripping, harassment, suffocation). However, it is not yet clear whether these processes would be relevant in low-density environments such as poor groups and the field. In this sense, analyzing the morphology of dwarf galaxies turns out to be one of the fundamental elements to understand their underlying dynamics as well as their assembly histories. In this work, we present a preliminary photometric and spectroscopic study of the dS0 galaxy CGCG014-074 that forms a small group with NGC 4546, an S0 galaxy located in a low-density environment. The analysis presented here is part of a larger study carried out by the SEECC research group and shows the first results obtained from the dS0 galaxy.