========================================================================== J/A+A/450/681 Companions to close spectroscopic binaries (Tokovinin+, 2006) The following files can be converted to FITS (extension .fit .fgz or .fiZ) table2.dat table5.dat notes.dat ========================================================================== Query from: http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=J/A+A/450/681 ==========================================================================
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Beginning of ReadMe : J/A+A/450/681 Companions to close spectroscopic binaries (Tokovinin+, 2006) ================================================================================ Tertiary companions to close spectroscopic binaries. Tokovinin A., Thomas S., Sterzik M., Udry S. <Astron. Astrophys. 450, 681 (2006)> =2006A&A...450..681T ================================================================================ ADC_Keywords: Binaries, spectroscopic ; Proper motions ; Parallaxes, trigonometric ; Stars, masses Keywords: stars: binaries: visual - stars: binaries: spectroscopic - stars: formation Abstract: We have surveyed a sample of 165 solar-type spectroscopic binaries (SB) with periods from 1 to 30 days for higher-order multiplicity. 62 targets have been observed with the NACO adaptive optics system and 13 new physical tertiary companions were detected. Another 12 new wide companions (5 still tentative) were retrieved from the 2MASS (II/246) sky survey. Our binaries belong to 161 stellar systems; of these 64 are triple, 11 quadruple and 7 quintuple. After correction for incomplete detection, the fraction of SBs with additional companions is 63+/-5%. We find that this fraction is a strong function of the SB period P, reaching 96% for P<3d and dropping to 36% for P>12d. Period distributions of SBs with and without tertiaries are significantly different, but their mass ratio distributions are identical. New statistical data on the multiplicity of close SBs indicate that their periods and mass ratios were established very early, but periods of SBs within triples were further shortened by angular momentum exchange with companions. Description: Table 2 gives the sample of 161 multiple systems containing our 165 SBs, identified by the HIP numbers of their primaries. Table 5 lists the orbital and physical parameters of each sub-system, combining known information with the new discoveries reported in the paper. The systems are linked together by their common HIP identifiers and the codes describing the hierarchy, as detailed in the article. Notes to Table 5 are given in the free-text format, referenced by the same HIP numbers of primary components.