Unlocking the Secrets of CGCG014-074: Spectroscopic Analysis of a Lenticular Dwarf Galaxy

ESCUDERO, CARLOS; GUEVARA, NATALIA; FAIFER, FAVIO

Córdoba

Congreso; XII Friends of Friends Meeting; 2023

Observatorio de Córdoba

Dwarf galaxies are most abundant in the local Universe. According to the current Λ cold dark matter model, low-mass dwarf galaxies are the first to form. These semi-pressure-supported systems are the building blocks of massive galaxies in a hierarchically assembled Universe. In the case of early-type dwarf galaxies (dE, dS0), it is suggested that their formation is due to the transformation of late-type to early-type galaxies through different processes, such as interactions and mergers, where environmental effects in high-density environments (e.g., ram-pressure stripping, harassment, suffocation) are also important. However, in the case of isolated galaxies, if they did not escape from a high-density environment, the transformative processes mentioned above cannot be the source of this galaxy population. In other words, these galaxies cannot be spirals transformed by the environment, and therefore an alternative formation process is required. In this context, we present a follow-up to the work presented at the XI FoF meeting on the lenticular dwarf galaxy CGCG014-074 located in a low-density environment. On this occasion, we focus on the spectroscopic analysis of the galaxy, analyzing its kinematics and its star formation history. Through this analysis, we seek to gain a deeper understanding of its possible origin and evolution.