The old open cluster NGC 7142.
Abstract
The Hale 5.08 m and the Kitt Peak 2.15 m telescopes have been used to obtain a colour-magnitude diagram for the open cluster NGC 7142. The data indicate that this cluster is probably older than NGC 7789 but younger than M 67. The observations yield (m-M) = 13.7, = 0.41 and R = 3.2 kpc.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- December 1970
- Bibcode:
- 1970A&A.....9..209V