A& A Supplement series, Vol. 121, January 1997, 71 - 76
Received March 5; accepted May 20, 1996
A. A. Tokovinin
Sternberg Astronomical Institute , 13 Universitetsky prosp., 119899 Moscow, Russia.
New close sub-systems are discovered in wide physical
multiple stars. Elements of spectroscopic orbits are given for
the components of quadruple systems ADS 1315C, 3608C, 3824C, 3991A
and for the components of triple systems ADS 1849A, 6646A, 8861A.
Physical parameters (magnitudes, spectral types,
masses of individual components, distances to the systems,
angular separations) are estimated by combining all available
data. The nearby M dwarf ADS 8861A = Gliese 507A is a good
candidate for speckle resolution. The very hot
white dwarf discovered by Hodgkin et al. (1993) is likely to be
an additional visual component to ADS 3824C,
so this system may be quintuple; however, a search of 
photometric periodicity possibly caused by the hot close companion is
highly desirable.
keywords: binaries: spectroscopic -- binaries: visual