Fig. 4
Pebble accretion radius of an embryo bset (Eq. (18); solid curve) as a function of the pebble radius a. The upper and lower solid curves show bset for embryos of masses Me = 10-1 M⊕ and 10-2 M⊕, respectively. The dashed and dotted lines indicate the Hill radii RH (Eq. (20)) and geometric radii Rgeo = (3 Me/ 4πρe)1 / 3 of the embryos, respectively, where we take ρe = 3 g cm-3.
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