e − P diagrams for all SB1 (left panel: unfiltered; adequately filtered e − P diagrams for SB1 with an RGB and AGB primary are presented in Fig. 24) and astrometric (right panel) solutions falling along the RGB and AGB according to criterion (5), and with a radius available from radius_flame. We highlight the restricted period scale of the astrometric binaries as compared to the SB1, and the lack of binaries with periods close to 1 yr among astrometric binaries.