Vol 16, No 7

Improved proper motion determinations for 15 open clusters based on the UCAC4 catalog

Alexander Kurtenkov, Nadezhda Dimitrova, Alexander Atanasov, Teodor D. Aleksiev

Abstract

Abstract The proper motions of 15 nearby (d < 1 kpc) open clusters (OCs) were recalculated using data from the UCAC4 catalog. Only evolved or main sequence stars inside a certain radius from the center of the cluster were used. The results significantly differ from the ones presented by Dias et al. (2014). This could be explained by a different approach in which we take the field star contamination into account. The present work aims to emphasize the importance of applying photometric criteria for the calculation of OC proper motions.

Keywords

Keywords proper motions — Galaxy: open clusters and associations: general

Full Text
Refbacks

  • There are currently no refbacks.