Universal depletion of metal-poor globular clusters in inner galaxy regions: Fossil record of black hole retention

Open Access

Fig. 2

Ratio of metal-poor (Z = 0.0002) to metal-rich (Z = 0.02) cluster mass-loss rates, ${\dot{M}}_{MP} / {\dot{M}}_{MR}$ ${{\dot M}_{{\rm{MP}}}}/{{\dot M}_{{\rm{MR}}}}$ , as a function of the fractional mass loss, f_Mloss. The modeled clusters follow the initial conditions of Paper I, except for a half-mass radius of r_h,0 = 1.2 pc, and are located at $R_{g}^{3D} = 2$ $R_{\rm{g}}^{{\rm{3D}}} = 2$ and 8 kpc, covering BH retention from complete ejection (η = 0) to full retention (η = 1).

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