Mass of Open Cluster NGC 7789
Abstract
Mass of open cluster NGC 7789 in the Galaxy is determined by three methods: the photometric method based on mass-luminosity relations of stars in the cluster Mpho = 7712.5Modot; the dynamical method based on virial theorem Mvir = 6996.1Modot; and the tidal radius method based on the interaction between the cluster and the Galaxy Mtid = 5152.5Modot. The mean mass of this cluster is estimated to be Mc = 6620.4 ± 762.5Modot.
- Publication:
-
Chinese Physics Letters
- Pub Date:
- February 2009
- DOI:
- 10.1088/0256-307X/26/2/029701
- Bibcode:
- 2009ChPhL..26b9701W