Astrophysical proper ties of star clusters in the Mag ellanic Clouds homog eneously estimated by ASteCA

R.A. VÁZQUEZ; A. PIATTI; G. I. PERREN

ASTRONOMY AND ASTROPHYSICS

EDP SCIENCES S A

Lugar: Paris; Año: 2017

0004-6361

Aims. To produce an homogeneous catalog of astrophysical parameters of 239 resolved star clusters located in the Small and LargeMagellanic Clouds, observed in the Washington photometric system.Methods. The cluster sample was processed with the recently introduced Automated Stellar Cluster Analysis ( ASteCA) package,which ensures both an automatized and a fully reproducible treatment, together with a statistically based analysis of their fundamentalparameters and associated uncertainties. The fundamental parameters determined with this tool for each cluster, via a color-magnitudediagram (CMD) analysis, are: metallicity, age, reddening, distance modulus, and total mass.Results. We generated an homogeneous catalog of structural and fundamental parameters for the studied cluster sample, and performed a detailed internal error analysis along with a thorough comparison with values taken from twenty-six published articles. Westudied the distribution of cluster fundamental parameters in both Clouds, and obtained their age-metallicity relationships.Conclusions. The ASteCA package can be applied to an unsupervised determination of fundamental cluster parameters; a task ofincreasing relevance as more data becomes available through upcoming surveys.