Relative Proper-Motions in the Region of the Open Cluster M67
Abstract
In order to identify member stars of the open cluster M67, the relative proper motions of 1067 stars in the region of M67 have been determined from four pairs of photographic plates. The epoch intervals of these plate pairs range from 64 to 69 years, and the limiting magnitude is about 15m.5. The results obtained by means of a least square solution show that the mean error of proper motion per century for each pair of plates is about ±0arcsec.266.
- Publication:
-
Shanghai Observatory Annals
- Pub Date:
- 1982
- Bibcode:
- 1982AnShO...4...17T