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Fig. 4.


Spectroscopic binary status (SBS) diagrams and systems that belong to each category. Blue circles are used to represent components: filled if they are significantly detected in the spectrum, empty otherwise. Lines connecting the components represent orbits: dashed if they do not induce detected radial velocity variations in the observed lines, single-solid if they do, and double-solid if they do and also produce eclipses. Empty green circles identify the observed astrometric components. Red rectangles identify the components included in the GOSSS long-slit spectra, note that if two red rectangles are shown in a diagram because GOSSS spatially separates components then the secondary spectrum is listed in parenthesis in the list below. Components outside the high-resolution aperture or low-mass components that do not induce detected radial velocity variations in the observed lines are not included. This subfigure shows systems with two components and the next subfigure those with three or four.

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