Publications
of the
MPIfR
Optical & Infrared
Interferometry Group
I.I. Balega, Y.Y. Balega, K.-H.
Hofmann, A.F. Maksimov, E.A. Pluzhnik, D. Schertl, Z.U. Shkhagosheva,
and G. Weigelt:
Speckle interferometry of nearby multiple
stars
Astronomy & Astrophysics 385, 87-93 (2002)
Abstract.
We present the results of diffraction-limited optical speckle
interferometry and infrared bispectrum speckle interferometry of 111
double and 10
triple systems performed in 1998-1999 with the 6-m telescope of the
Special Astrophysical Observatory in Zelenchuk. The observations
concentrated on nearby close binaries discovered during the Hipparcos
mission. Many nearby fast-orbiting low-mass binaries known before
Hipparcos were also included in the program. New companions were first
resolved in 4 systems: HIP 5245, ADS 3179, Kui 99, and ADS 16138. In
addition to accurate relative positions, magnitude differences were
measured for most of the pairs. We combined our results with the
Hipparcos
parallaxes to derive absolute magnitudes and spectral types for 63
binaries and 4 triples. Preliminary orbital elements and the mass-sum
are
derived for HIP 689, and improved orbits are presented for HIP 16602
(CHR 117) and HIP 21280 (CHR 17).
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