Accretion of primordial H–He atmospheres in mini-Neptunes: The importance of envelope enrichment

Open Access

Table 1

Assumed initial solid surface density and initial gas surface density in the heavy, medium, and light disk.

		Rapid accretion Oligarchic accretion	Pebble accretion

		∑_Z,0 (g cm⁻²)	∑_g,0 (g cm⁻²)	t_{0, peb} (kyr)
Heavy disk	3 au	17.33	250	34.4

	5 au	10.4	150	38.7

Medium disk	3 au	13	167	49.2

	5 au	7.8	100	56.5

Light disk	3 au	8.67	83	101

	5 au	5.2	50	119

Notes. ∑_Z,0 is used for the planetesimal accretion, while Σ_g,0 and t_0,peb are used for the pebble accretion.

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