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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