New determination of the angular diameter of Sirius

Details New determination of the angular diameter of Sirius New determination of the angular diameter of Sirius

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986natur.323..234d&link_type=abstract

Nature (ISSN 0028-0836), vol. 323, Sept. 18, 1986, p. 234, 235. Research supported by the University of Sydney and Durack Trust

Astronomy and Astrophysics

Astronomy

31

Angular Correlation, Astrometry, Astronomical Observatories, Diameters, Interferometry, Calibrating, Errors, Prototypes, Stellar Atmospheres, Stellar Parallax

Scientific paper

The present determination of the angular size of Sirius, which has yielded a uniform disk diameter of 5.63 + or - 0.08 arcmin, represents the first measurement of a main sequence star by amplitude interferometry with a small aperture (100-mm diameter) instrument through the turbulent atmosphere. This is also the first independent confirmation of a Narrabri stellar intensity interferometer-obtained angular diameter.The new result is in excellent agreement with the earlier value, and was obtained with only about 2 percent of the observing time required for the intensity interferometer.

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