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Measuring Stars with High Angular Resolution: Results from Narrabri Observatory

Published online by Cambridge University Press:  04 August 2017

R. Hanbury Brown*
Affiliation:
Chatterton Astronomy Department University of Sydney

Abstract

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The stellar intensity interferometer at Narrabri Observatory was used to measure the angular diameters of 32 stars in the spectral range 05f to F8 and brighter than about V = +2.6. The results were combined with measurements of absolute flux and, in a few cases parallax, to find the emergent flux, effective temperature, radius and luminosity of the stars. The methods used to calibrate these measurements and their uncertainties are discussed. It is shown that in measuring emergent flux and effective temperature the major uncertainties were most frequently in the measurements of angular size.