Comparison between |E_bin| within an aEMS of 1000 M_⊙ and the orbital energy $|E_{\mathrm{orb}}^{\mathrm{rel}}|$ of a 30 M_⊙ inspiraling star (blue full and orange dotted lines respectively), for models computed with MLT and [Fe/H] = −2.00 dex, with the abscissa in mass and radius in the left and right panels, respectively. The red-dotted lines show the coordinates where $|E_{\mathrm{orb}}^{\mathrm{rel}}|$ is higher than |E_bin|. The green-dotted lines represent the points where the local temperature of the aEMS exceeds the virial temperature of the inspiraling star. The dotted-purple lines represent the points where the radius of the inspiraling star fills the Roche lobe.