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Table B.1.

Molecular surface density at 250 au assuming p = 1.

Molecules Surface density Molecules Surface density
(cm−2) (cm−2)
13CO D 1.10 × 1016* CS D (1.97 ± 0.02) 1013
C18O D 2.42 × 1015* 13CS D (2.0 ± 0.5) 1011
13C17O U < 2.1 1013 CCS D (9.0 ± 0.5) 1011
CN D (7.0 ± 0.2) 1013 OCS M (1.3 ± 0.4) 1011
13CN D (2.1 ± 0.8) 1012 p/o-H2CS U < 7.3 1013/3.7 1012
CCH D (5.0 ± 0.1) 1013 SO U < 2.8 1012
N2H+ D (8.4 ± 0.7) 1011 SO2 U < 1.9 1012
N2D+ U < 2.0 1010 SiO U < 3.3 1011
HCN D (4.89 ± 0.03) 1012 DCN M (1.2 ± 0.8) 1011
H13CN U < 1.1 1011 CCD U < 7.35 1013
HC15N U < 2.0 1011 HDO U < 2.2 1011
HNC D (2.47 ± 0.02) 1012 DNC D (2.0 ± 0.5) 1011
s HN13C U < 1.3 1011 D2CO U < 2.5 109
HCO+ D (1.10 ± 0.03) 1013 DCO+ M (1.6 ± 0.5) 1011
H13CO+ D (2.8 ± 0.2) 1011 p-H2CO D (2.6 ± 0.1) 1012
HOC+ U < 1.9 1010 c-C3H2 U < 9.7 1011
HCNH+ U < 1.5 1013 HC3N D (3.5 ± 1.2) 1011
HCCCHO U < 1.3 1017 CH3CN U < 2.2 1011
C34S D (7.7 ± 0.8) 1011

Notes. 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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