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The occultation of beta Scorpii by Jupiter. VII - The angular diameters of beta Scorpii A1 and A2A new technique for measuring angular diameters of stars, which makes use of stellar images formed by planetary atmospheres during occultations, is described. This method has been applied to light curves of the 1971 May 13 occultation of beta Sco by Jupiter, yielding the angular diameters of the two early B stars comprising the spectroscopic binary beta Sco A. An angular diameter of about .000422 arcsec for beta Sco A1 and about .000264 arcsec is found for beta Sco A2. These angular diameters are in good agreement with that obtained with the intensity interferometer for beta Sco, a star of nearly the same magnitude and spectral type as beta Sco A1. If the distance to beta Sco A were precisely known, beta Sco A1 and A2 would become fundamental standards of mass, luminosity, and radius for early B stars. Present constraints on the distance and methods by which it could be accurately determined are discussed.
Document ID
19760057964
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Elliot, J. L.
(Cornell Univ. Ithaca, NY, United States)
Rages, K.
(Cornell University Ithaca, N.Y., United States)
Veverka, J.
(Cornell Univ. Ithaca, NY, United States)
Date Acquired
August 8, 2013
Publication Date
August 1, 1976
Publication Information
Publication: Astrophysical Journal
Volume: 207
Subject Category
Lunar And Planetary Exploration
Accession Number
76A40930
Funding Number(s)
CONTRACT_GRANT: NGR-33-010-082
Distribution Limits
Public
Copyright
Other

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