Star formation history of young globular clusters

SESTO, L.; ESCUDERO, C.; FAIFER, F.; SMITH CASTELLI, A.; FORTE, J. C.; BARBOSA, C.

Antofagasta

Congreso; LARIM; 2019

IAU

In Sesto et al. (2016, 2018) we confirmed the existence of a complex and unusual GC system associated with the merger remnant NGC 1316. Using photometric and spectroscopic data, we found the presence of two principal GC subpopulations: one old (8−10 Gyr), metal-poor and other younger (2−4 Gyr) and metal-rich. In addition, several objects in our sample seem to show similarities with some nuclei of early-type dwarf galaxies. Some of these objects could actually be stripped nuclei, possibly accreted during minor merger events. In this conference, we will present an exhaustive analysis of those objects with high signal-to-noise ratio spectra (S/N>30). We will show the analysis of its most relevant physical properties and their star formation history, which we have obtained through the full spectral fitting technique. In this new approach, we propose to obtain a definitive picture of the recent past of this galaxy, and its different fusion events, which have given rise to a complex family of star clusters.