Star clusters as tracers of the chemical evolution in different SMC structural components

San Miguel de Tucumán

Congreso; Cuartas Jornadas de Astrofísica Estelar; 2022

Asociación Argentina de Astronomía

We analyze the chemical evolution of the Small Magellanic Cloud adding 12 additional clusters toour existing sample having accurate and homogeneous CaII Triplet metallicities. The separate chemical analysis of clusters in the six components (Main Body, Counter-Bridge, West Halo, Wing/Bridge, Northern Bridge and Southern Bridge) shows that only clusters belonging to the Northern Bridge appear to trace a V-Shape, showing a clear inversion of the metallicity gradient in the outer regions. There is a suggestion of a metallicity gradient in the West Halo, similar to that previously found for eld stars. It presents, however, a very large uncertainty. Also, clusters belonging to theWest Halo, Wing/Bridge and Southern Bridge exhibit a well-dened age-metallicity relation with relatively little scatter in abundance at xed age compared to other regions.