[α/Fe] versus [M/H] (from GSP-Spec) for ellipsoidal candidates. In the top panel, the points are color coded according to their orbital period. Solar values are marked with dotted gray lines. In the bottom panel is the same sample, but the color bar corresponds to the spectroscopic mass of the primary. The YAR stars from Jofré et al. (2023) based on APOGEE observations are included as squares; those with a red cross mark are spectroscopic binaries.