Spectroscopic Orbits of Subsystems in Multiple Stars. VIII.

Periods, eccentricities, and masses in hierarchical stellar systems inform us on the formation early evolution of these fascinating objects. To complement multiplicity statistics nearby solar-type stars, 19 new spectroscopic orbits inner subsystems 15 hierarchies (10 triples 5 quadruples) are determined based high-resolution echelle spectra collected during several years. While previous papers this series contained mostly short-period orbits, here most periods order a year. The main components HIP 7852, 9148, 12548, 21079, 24320, 27970, 34212, 56282, 57860, 76400, 76816, 81394, 96284, 100420, HD 108938. Noteworthy 12548 24230 (hierarchies 2+2 architecture with low-mass secondaries), 56282 (a planetary-type 3+1 hierarchy), 27970 compact triple 1049 days).