Photographic astrometry of binary and proper-motion stars.

Details Photographic astrometry of binary and proper-motion stars. Photographic astrometry of binary and proper-motion stars.

Jan 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990aj.....99..420h&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 99, Jan. 1990, p. 420-423. Research supported by the Charles A. Dana Foundation, Inc

Astronomy and Astrophysics

Astronomy

21

Astrometry, Astronomical Photography, Binary Stars, Dwarf Stars, Stellar Mass, Stellar Motions, Photographic Plates, Reference Stars, Stellar Magnitude, Stellar Orbits

Scientific paper

In the study of dwarf star distances and of binary-star masses at the
61-cm Swarthmore refractor, parallaxes of 69 stars and systems were
obtained by processing some 5000 astrometric plates from April 1988 to
July 1989. These results are listed along with 11 binary-star mass
ratios and three unresolved pairs.

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