Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987aj.....93..183m&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 93, Jan. 1987, p. 183-194. Research supported by the Space Telescope Science Institu
Astronomy and Astrophysics
Astronomy
87
Astronomical Catalogs, Charge Coupled Devices, Eclipsing Binary Stars, Hubble Space Telescope, Speckle Interferometry, Stellar Magnitude, Radial Velocity, Spectroscopic Telescopes
Scientific paper
A survey of a sample of 672 stars from the Yale Bright Star Catalog (Hoffleit, 1982) has been carried out using speckle interferometry on the 3.6-cm Canada-France-Hawaii Telescope in order to establish the binary star frequency within the sample. This effort was motivated by the need for a more observationally determined basis for predicting the frequency of failure of the Hubble Space Telescope (HST) fine-guidance sensors to achieve guide-star lock due to duplicity. This survey of 426 dwarfs and 246 evolved stars yielded measurements of 52 newly discovered binaries and 60 previously known binary systems. It is shown that the frequency of close visual binaries in the separation range 0.04-0.25 arcsec is 11 percent, or nearly 3.5 times that previously known.
Franz Otto G.
Hartkopf William I.
Hutter Donald J.
McAlister Harold A.
Shara Michael M.
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