Orbits of new spectroscopic components in 7 multiple systems

Details Orbits of new spectroscopic components in 7 multiple systems Orbits of new spectroscopic components in 7 multiple systems

Jan 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997a%26as..121...71t&link_type=abstract

A & A Supplement series, Vol. 121, January 1997, 71-76.

Astronomy and Astrophysics

Astronomy

23

Binaries: Spectroscopic, Binaries: Visual

Scientific paper

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)]{ref12} is likely to be an additional visual component to ADS 3824C, so this system may be quintuple; however, a search of 2fd 993 photometric periodicity possibly caused by the hot close companion is highly desirable. Table 4 and Appendix are only available in electronic form at the CDS via anonymous ftp to: cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/Abstract.html

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