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Table B.1.

List of notations.

Symbol Description
Φ Disk flaring angle
Σc Surface density in carbon grains
Σc, l Surface density of large carbon grains
Σc, s Surface density of small carbon grains
Σtot Total dust surface density
Σ* Dust surface density in exposed layer (oxidation)
Σph* Dust surface density in exposed layer (photolysis)
Ω Keplerian frequency
α Turbulence parameter
ϵ Oxygen to gas ratio at z1
κ Grain opacity
κ0 Fixed grain opacity at z1
λ Wavelength
μ Mean molecular weight of neutral hydrogen
νt Turbulent viscosity
ρc Specific carbon grain density
ρd Disk dust density
ρg Disk gas density
ρs Specific grain density
ρtot Total disk grain density
σ Grain cross section
τr Radial optical depth at 0.55 μm
τr, ph Radial optical depth at 0.55 μm at z1, ph
τz Vertical optical depth at 0.55 μm
A Parameter for calculation of Yox
B Parameter for calculation of Yox
Dg Gas diffusivity
Di Diffusivity of species i
Dl Diffusivity of large grains
Di Diffusivity of small grains
FUV UV flux
H Disk gas scale height
L* Stellar luminosity
LUV Stellar luminosity in the UV
M* Stellar mass
P Gas pressure
Tg Gas temperature at z1
Ti Gas temperature at z1 at 1 au
St Stokes number
Stmid Stokes number in midplane
Yox Oxidation yield at z1
Yph Photolysis yield
cs Isothermal sound speed
fc Carbon mass fraction in solids
fd Calibration factor for drift limit
ff Calibration factor for fragmentation limit
fl Surface density fraction of large grains
f≤s Mass fraction of grains with radius up to s
f≤s1 Mass fraction of grains with radius up to s1
fz Fraction of total surface density above z
kB Boltzmann’s constant
hgr Dust scale height
kox Carbon oxidation rate at z1
mgr Mass of grain with s1
mc Mass of a carbon atom
mox Mass of an oxygen atom
ng Gas number density at z1

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