The triple system ADS 9167

Details The triple system ADS 9167 The triple system ADS 9167

Nov 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998astl...24..753k&link_type=abstract

Astronomy Letters, Volume 24, Issue 6, November 1998, pp.753-757; Pis'ma v Astronomicheskii Zhurnal, Vol. 24, p. 868

Astronomy and Astrophysics

Astronomy

14

Scientific paper

Based on correlation radial-velocity measurements, we found the primary component in the visual binary system ADS 9167 = HD 124640 to be a single-lined spectroscopic binary with a 2.87-yr period and 0.75 eccentricity. The visual components are of spectral type K2 V, while the secondary component of the spectroscopic pair is probably a red K6 V dwarf. Using the 26-year-long series of Pulkovo photographic relative-position observations, we compute a new visual orbit of AB with a period of about 1000 years by the method of apparent-motion parameters. The errors in its elements are estimated. The accuracy of the photographic measurements turns out to be not enough to construct an astrometric orbit of the 2.87-yr subsystem with a semimajor axis of ~ 0.024''. ADS 9167 shows a moderately high space velocity and a slightly reduced metallicity.

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