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Vector space methods of photometric analysis - Applications to O stars and interstellar reddeningA multivariate vector-space formulation of photometry is developed which accounts for error propagation. An analysis of uvby and H-beta photometry of O stars is presented, with attention given to observational errors, reddening, general uvby photometry, early stars, and models of O stars. The number of observable parameters in O-star continua is investigated, the way these quantities compare with model-atmosphere predictions is considered, and an interstellar reddening law is derived. It is suggested that photospheric expansion affects the formation of the continuum in at least some O stars.
Document ID
19780050031
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Massa, D. (Colorado Univ. Boulder, CO, United States)
Lillie, C. F. (Colorado, University Boulder, Colo., United States)
Date Acquired
August 9, 2013
Publication Date
May 1, 1978
Publication Information
Publication: Astrophysical Journal
Subject Category
ASTROPHYSICS
Funding Number(s)
CONTRACT_GRANT: NGR-06-003-179
Distribution Limits
Public
Copyright
Other