Main sequence of NGC 6231
New MK spectral classifications (30 stars) and UBV photoelectric photometry (27 stars) are presented for stars in the central region of the rich, young cluster NGC 6231, which is the nucleus of the association I Sco. A distance modulus of 11.6 is derived by comparison with the main sequences of II Sco, the ..cap alpha.. Persei cluster, and the Hyades, assuming a distance modulus of 3.3 for the Hyades.
- Research Organization:
- David Dunlap Observatory, University of Toronto, Richmond Hill, Ontario, Canada L4C 4Y6
- OSTI ID:
- 6250301
- Journal Information:
- Astron. J.; (United States), Journal Name: Astron. J.; (United States) Vol. 84:7; ISSN ANJOA
- Country of Publication:
- United States
- Language:
- English
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