Supergiant binaries in the h and chi Persei association.
Abstract
A study of 23 supergiants in Per OB1 showed the existence of three spectroscopic binaries for which orbital elements are derived and three possible additional binaries. The resultant binary frequency of at least 15 percent is similar to that of field supergiants and Cepheids. No binaries with periods less than 32 days in length were found, implying that the known supergiant X-ray sources of much shorter periods are probably rarely found systems. Subject headings: associations - binaries - luminous stars
- Publication:
-
The Astrophysical Journal
- Pub Date:
- August 1973
- DOI:
- 10.1086/152314
- Bibcode:
- 1973ApJ...184..167A