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Table 3.

Molecular surface density at 250 au derived with DiskFit.

Molecules Surface density Molecules Surface density
(cm−2) (cm−2)
13CO D 1.10 × 1016(*) CS D (2.6 ± 0.03)×1013
C18O D 2.42 × 1015(*) 13CS D (2.6 ± 0.7)×1011
13C17O U < 1.2 × 1013 CCS D (1.5 ± 0.2)×1012
CN D (7.7 ± 0.1)×1013 OCS M (4.5 ± 2.3)×1010
13CN D (2.8 ± 1.1)×1012 p/o-H2CS U < 8.2 × 1013/5.3 × 1012
CCH D (6.8 ± 0.1)×1013 SO U < 4.5 × 1012
N2H+ D (1.2 ± 0.1)×1012 SO2 U < 5.0 × 1012
N2D+ U < 1.3 × 1011 SiO U < 4.5 × 1011
HCN D (6.70 ± 0.04)×1012 DCN M (1.9 ± 1.2)×1011
H13CN U < 1.6 × 1011 CCD U < 1.0 × 1014
HC15N U < 2.9 × 1011 HDO U < 1.9 × 1010
HNC D (3.4 ± 0.03)×1012 DNC D (2.7 ± 0.7)×1011
HN13C U < 1.7 × 1011 D2CO U < 1.6 × 1010
HCO+ D (1.50 ± 0.01)×1013 DCO+ M (2.2 ± 0.7)×1011
H13CO+ D (4.0 ± 0.2)×1011 p-H2CO D (3.6 ± 0.2)×1012
HOC+ U < 3.2 × 1010 c-C3H2 U < 1.0 × 1012
HCNH+ U < 2.2 × 1013 HC3N D (5.4 ± 1.1)×1011
HCCCHO U < 1.4 × 1017 CH3CN U < 2.5 × 1011
C34S D (1.0 ± 0.1)×1012

Notes. The temperature uncertainty only affects the derived densities by factors smaller than 2. D = detected, U = undetected, and M = marginal detected T0 = 15 K for S-bearing species, and T0 = 25 K for all other molecules. (*)The values are taken from Phuong et al. (2020).

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