Table D.3
Column densities and specific ratios in Class 0/I protostars in Perseus.
| Source | N(H2S) |  |
Calculated H2S(a) | N(OCS) | N(OC33S) | N(OC34S) | Calculated OCS(b) | N(SO)(c) | N(SO2)(c) | 34S/33S | H2Sl33/H2S(d) | OCSI34/OCS(d) | H2S/OCS |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (cm–2)×l013 | (cm–2)×l013 | (cm–2)×l013 | (cm–2)×l013 | (cm–2)×l013 | (cm–2)×l013 | (cm–2)×l013 | (cm–2)×l013 | (cm–2)×l013 | |||||
| BlbN | 0.0 | 2.890 | (N(H2S)=154.0) | 0.0 | 0.0 | 0.0 | <7 | <28 | − | − | − | − | |
| BlbS | 18.45 | 6.055 | (N(H2S)=2659) | 13.37 | 5.099 | 12.83 | (N(OCS)=288.8) | <7 | <28 | 2.52 | 144.1 | 21.6 | 9.21 |
| B5-IRS1 | 50.40 | 0.0 | <7.154 | 0.0 | 0.0 | [41.3-61.2] | <38 | − | − | − | >7.05 | ||
| HH211MMS | 21.01 | 0.0 | 9.871 | 1.831 | 7.095 | (N(OCS)=159.6) | [48.3-71.6] | [50-200] | 3.88 | − | 16.2 | 0.13 | |
| IC348MMS | 33.96 | 4.092 | (N(H2S)=2936) | 17.01 | 1.738 | 8.735 | (N(OCS)=196.5) | >40.9 | [20-60] | 5.02 | 86.5 | 11.6 | 14.9 |
| IRAS 2 A | 446.3 | >20.05 | (N(H2S)>5687) | 565.7 | 13.59 | 81.98 | (N(OCS)=1845) | >188.1 | >300 | 6.03 | >12.7 | 3.26 | >3.08 |
| IRAS2B | 10.29 | 0.0 | 10.58 | 0.0 | 0.0 | >52.7 | [10-40] | − | − | − | 0.97 | ||
| IRAS4B | 266.6 | 31.93 | (N(H2S)=20600) | 145.9 | 15.20 | 63.89 | (N(OCS)=1437) | >11.9 | [20-70] | 4.20 | 77.3 | 9.85 | 14.3 |
| IRAS4C | 11.54 | 0.0 | 3.886 | 0.0 | 0.0 | [33.2-49.2] | <18 | − | − | − | 2.97 | ||
| L1448-IRS3A | 21.83 | 0.0 | 37.36 | 2.360 | 9.640 | (N(OCS)=216.9) | >35.5 | [20-60] | 4.08 | − | 5.81 | 0.10 | |
| L1448-IRS3B | 27.05 | 0.0 | 11.00 | 0.804 | 7.152 | (N(OCS)=160.9) | [10.8-16.0] | <15 | 8.90 | − | 14.6 | 0.17 | |
| L1448C | 130.9 | 0.0 | 222.0 | 2.965 | 16.99 | (N(OCS)=382.3) | >59.0 | [60-400] | 5.73 | − | 1.70 | 0.34 | |
| L1448NW | 9.612 | 0.0 | <3.426 | 0.0 | 0.0 | >33.4 | [10-50] | − | − | − | >2.81 | ||
| Per-emb-02 | 30.04 | 0.0 | 2.785 | 0.0 | 0.0 | [19.4-28.8] | <49 | − | − | − | 10.8 | ||
| Per-emb-05 | 14.83 | 0.0 | 12.84 | 0.695 | 8.509 | (N(OCS)=191.5) | [13.7-20.2] | <20 | 12.2 | − | 14.9 | 0.08 | |
| Per-emb-08 | 11.64 | 0.0 | <2.923 | 0.0 | 0.0 | [17.6-26.1] | <40 | − | − | − | >3.98 | ||
| Per-emb-18 | 27.68 | 0.0 | 74.03 | 2.348 | 16.20 | (N(OCS)=364.5) | >65.2 | [30-100] | 6.90 | − | 4.92 | 0.08 | |
| Per-emb-22 | 37.87 | 0.0 | 23.66 | 0.0 | 0.0 | [16.8-51.8] | [10-40] | − | − | − | 1.60 | ||
| Per-emb-29 | 98.54 | 4.68 | (N(H2S)=5364) | 36.83 | 5.763 | 20.04 | (N(OCS)=451.0) | >56.3 | [30-100] | 3.48 | 54.4 | 12.2 | 11.9 |
| Per-emb-30 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | − | − | − | − | − | − | ||
| Per-emb-50 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | >127.6 | [50-300] | − | − | − | − | ||
| Per-emb-62 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | − | − | − | − | − | − | ||
| SVS13A | 974.7 | >67.76 | (N(H2S)>14820) | 946.6 | 39.10 | 192.4 | (N(OCS)=4329) | >210.5 | >300 | 4.92 | >15.2 | 4.57 | >3.42 |
| SVS13B | 26.76 | 0.0 | 31.59 | 1.964 | 6.163 | (N(OCS)=138.7) | [5.0-7.4] | <18 | 3.14 | − | 4.39 | 0.19 |
Notes. (a) Calculated using the solar isotopic ratio, 32S/33S=126 (Anders & Grevesse 1989).(b) Calculated using the solar isotopic ratio, 32S/34S=22.5 (Anders & Grevesse 1989).(c) Retrieved from Artur de la Villarmois et al. (2023); no data from Per-emb-30 and Per-emb-62 (not observed). (d) Alx/A notation stands for the ratio between the A species column density calculated with the corresponding xS isotopologue, and the column density of A estimated without the isotopologue.
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