X-ray radiative transfer in protoplanetary disks - The role of dust and X-ray background fields

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Table 2

Dust models.

Name	Parameters	A_V = 1 ^a	Surface ^b
		(cm^-2)	(cm²)

Small grains	single size
SG	a = 0.1 μm	1.4(21) ^c	2.8(−21)
	no settling

Medium grains	a_min = 0.005 μm
MG	a_max = 1000 μm	1.9(22)	7.6(−22)
	a_pow = 3.7

Large grains	a_min = 0.05 μm
LG, reference	a_max = 3000 μm	1.2(23)	2.7(−23)
	a_pow = 3.5

Notes.

^(a)

Hydrogen column density N_{⟨ H ⟩} where the visual extinction A_V is unity.

^(b)

Total dust surface per hydrogen nucleus (unsettled value).

^(c)

a(b) means a × 10^b.

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