First detection of the astrometric orbit of the single-lined spectroscopic binary epsilon Librae

Details First detection of the astrometric orbit of the single-lined spectroscopic binary epsilon Librae First detection of the astrometric orbit of the single-lined spectroscopic binary epsilon Librae

Apr 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989aj.....97.1184c&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 97, April 1989, p. 1184-1188.

Astronomy and Astrophysics

Astronomy

2

Astrometry, Binary Stars, Orbital Elements, Stellar Orbits, Interstellar Extinction, Stellar Evolution, Stellar Magnitude

Scientific paper

The Multichannel Astrometric Photometer of the University of Pittsburgh's Allegheny Observatory was used to successfully measure for the first time the astrometric orbit of the single-lined spectroscopic binary epsilon Lib. Solution of the orbit indicates that the secondary component is a 0.5-solar-mass star, assuming that the F5 IV primary is 1.3 solar mass. If the secondary is on the main sequence, then it is later than a K5 star, but earlier than an M2 star. In addition to detection of the astrometric orbit of epsilon Lib, two references stars used in the observations, AO 754 and AO 755, are found to be a common-proper-motion pair.

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