Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986lastr.100...17b&link_type=abstract
L'Astronomie (ISSN 0004-6302), vol. 100, Jan. 1986, p. 17-22. In French.
Astronomy and Astrophysics
Astronomy
Astronomy, Binary Stars, Astrometry, Astronomical Catalogs, Interferometry, Stellar Orbits, Visual Observation
Scientific paper
The cataloging of binary stars, the developments in methodology that have improved their measurement, and the increase in the number of known orbits of these systems are discussed. Adding more recent identifications to the present IDS catalog (Jeffers and Van den Bos, 1963) of 64,247 binaries, a total binary population comprising at least 70 percent of the first ten magnitude stars is postulated. The most important recent methodological innovations for the study of these systems include the use of speckle interferometry (Labeyrie, 1970) which can achieve precision with an angular distance of two or three hundredths of a second of degree, and photometric occultation recording. Visual orbital observations of binary stars presently exceed 900 binaries, but only a small percentage of these are considered definitive. Binary visual orbital determinations numbered 978 in 1978, but these can provide only a minimum value of stellar mass except in exceptional cases.
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