Astrophysical properties of star clusters in the Magellanic Clouds homogeneously estimated by ASteCA⋆
1 Facultad de Ciencias Astronómicas y Geofísicas (UNLP), IALP-CONICET, 1900 La Plata, Argentina
2 Observatorio Astronómico, Universidad Nacional de Córdoba, 5000 Córdoba, Argentina
3 Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), 1917 Buenos Aires, Argentina
Received: 12 August 2016
Accepted: 20 January 2017
Aims. We seek to produce a homogeneous catalog of astrophysical parameters of 239 resolved star clusters, located in the Small and Large Magellanic 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 fundamental parameters and associated uncertainties. The fundamental parameters determined for each cluster with this tool, via a color-magnitude diagram (CMD) analysis, are metallicity, age, reddening, distance modulus, and total mass.
Results. We generated a 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 26 published articles. We studied 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, which is a task of increasing relevance as more data becomes available through upcoming surveys.
Key words: galaxies: fundamental parameters / galaxies: star clusters: general / Magellanic Clouds / methods: statistical / catalogs / techniques: photometric
A table with the estimated fundamental parameters for the 239 clusters analyzed is only available at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (184.108.40.206) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/602/A89
© ESO, 2017