STUDY OF LUMINOSITIES OF LONG-PERIOD VARIABLES.
Abstract
A two-dimensional calssification was extended to more than 50 Mira variables. The need for some independent calibration of the classification in luminosity led to the study of the interstellar D-lines in the variables of high velocity. Individual absolute magnitudes are available for only 2 Mira variables (X Oph and X Mon) in the northern sky, but the agreement of their values with statistical means lends support to the conclusion that the majority of these stars have visual absolute magnitudes near -0.5 to -1.0 at maximum light. The classification suggests that there are a few of higher luminosity that could be termed supergiant variables. Work is reviewed on the absolute magnitude of the Mira variable X monocerotis. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1960
- Accession Number
- AD0236460
Entities
People
- Philip C. Keenan
Organizations
- Ohio State University