Blue Elliptical galaxies in the Fornax cluster through S-PLUS

CORTESI, A.; ET AL.; LOPES, AMANDA R; SMITH CASTELLI, A. V.

Buenos Aires

Congreso; 64 Reunión Anual de la Asociación Argentina de Astronomía; 2022

IAFE

Elliptical (E) galaxies present a smooth ellipsoidal morphology, reflecting the random and often very elongated orbits of their constituent stars. Generally, E galaxies live in the densest regions of the Universe, i.e. in the centre of clusters and groups, and are characterised by an old stellar population, rendering their integrated colour red. Yet, blue E galaxies have been discovered and their formation is still unknown. At the same time, they are a precious piece to compose the puzzle of galaxy formation and evolution. In fact, they might be the result of recent star formation, induced either from the environment the galaxy live in, or accretion. Of particular interest is studying their location in galaxy clusters, as the Fornax cluster.