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Membership of stars in open clusters using random forest with gaia data

Hasan, S. N.; Hasan, Priya; Raja, Mudasir +1 more

Membership of stars in open clusters is one of the most crucial parameters in studies of star clusters. Gaia opened a new window in the estimation of membership because of its unprecedented 6-D data. In the present study, we used published membership data of nine open star clusters as a training set to find new members from Gaia DR2 data using a s…

Approximate analytical description of the high latitude extinction

Malkov, Oleg; Kovaleva, Dana; Nekrasov, Alexei +1 more

The distribution of visual interstellar extinction A_V has been mapped in selected areas over the Northern sky, using available LAMOST DR5 and Gaia DR2/EDR3 data. A_V was modelled as a barometric function of galactic latitude and distance. The function parameters were then approximated by spherical harmonics. The resulting anal…