Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981pasp...93..777g&link_type=abstract
Astronomical Society of the Pacific, Publications, vol. 93, Dec. 1981, p. 777-782.
Astronomy and Astrophysics
Astronomy
1
Astrometry, Binary Stars, Light Speed, Solar System, Stellar Spectra, Stellar Spectrophotometry, Standard Deviation, Star Distribution, Stellar Parallax, Stellar Rotation, Visible Spectrum
Scientific paper
The constancy of the speed of light outside the solar system is checked by a technique combining parallax, visual binary, and spectroscopic binary data. A total of ten binary systems are uncovered with parallax errors small enough to correct for systematic errors in distance estimates, which are used to check directly for the speed of light within one standard deviation. The speed is found to be constant to within 10% for distances up to 25 parsecs.
Gruber Rainer
Koo David
Middleditch John
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