Astrometric and photometric study of Dias 4, Dias 6 and other five open clusters using ground based and Gaia DR2 data

Wilton S. Dias, Hektor Monteiro, Jacques R. D. Lépine +3

We present a study of 7 southern open clusters based on UBVRI CCD photomety (Johnsons-Cousins system) and Gaia DR2 data. Dias 4, Dias 6 and four other clusters had UBVRI photometri…