The Red Star in the Open Cluster Trumpler 27
Abstract
The spectrum of a peculiar red star in the cluster Tr 27 is described and its relationship to other spectral classes is discussed. The star is most likely a G or K supergiant. The intrinsic properties of the star, derived under the assumption of membership in the cluster, are Mv = -6.2, (B - V)0 = 1.25, and (U - B)0 = 2.30. Subject headings: luminous stars - open clusters
- Publication:
-
The Astrophysical Journal
- Pub Date:
- June 1973
- DOI:
- 10.1086/152185
- Bibcode:
- 1973ApJ...182..817A