Fotometría de Washington de 6 cúmulos abiertos ubicados a bajas latitudes galácticas

M.C. PARISI; J.J. CLARIÁ; T. PALMA; A.V. AHUMADA; C. OVIEDO

Malargüe

Congreso; 60 Reunión Anual de la Asociación Argentina de Astronomía; 2017

As part of a systematic program of photometric observations in the Washington system, we present preliminary results for six poorly studied open clusters located at low galactic latitudes. Four of them (ESO313-SC03, Ruprecht87, ESO129-SC32 and Ruprecht144) have not been previously studied in the optical range. The observations were made using the 0.9 m telescope of the Cerro Tololo Inter-American Observatory (Chile). Our results suggest that Ruprecht 87 is probably not a physical system. The resulting values, heliocentric distances and ages vary between 0.10 and 1.30 magnitudes, 1.0 and 5.0 kpc and 30 and 40 Myr, respectively. Although our results show in general terms a fairly good agreement with previous studies in the near-infrared region, we find considerable discrepancies in some cases in one or more astrophysical parameters.