Critical Densities for Typical Interstellar Molecules
| CO |
|---|
| Composition | Rotation Const | Dipole Moment |
|---|
| 5.000E-05 | 5.764E+10 | 1.120E-19 |
|---|
| T=10.00K | nu (GHz) | ncr (cm-3) |
| 1-->0 | 115.2712018 | 4.243E+03 |
| 2-->1 | 230.5380000 | 2.040E+04 |
| 3-->2 | 345.7959899 | 6.996E+04 |
| 4-->3 | 461.0407682 | 1.708E+05 |
| 5-->4 | 576.2679305 | 4.885E+05 |
| CS |
|---|
| Composition | Rotation Const | Dipole Moment |
|---|
| 4.000E-09 | 2.450E+10 | 2.000E-18 |
|---|
| T=10.00K | nu (GHz) | ncr (cm-3) |
| 1-->0 | 48.9909549 | 1.014E+05 |
| 2-->1 | 97.9809533 | 6.041E+05 |
| 3-->2 | 146.9690287 | 1.377E+06 |
| 4-->3 | 195.9542109 | 3.385E+06 |
| 5-->4 | 244.9355565 | 9.426E+06 |
| 6-->5 | 293.9120865 | 1.331E+07 |
| 7-->6 | 342.8828503 | 3.022E+07 |
| 8-->7 | 391.8468898 | 3.997E+07 |
| 9-->8 | 440.8032320 | 5.729E+07 |
| 10-->9 | 489.7509210 | 7.046E+07 |
| HCO+ |
|---|
| Composition | Rotation Const | Dipole Moment |
|---|
| 7.840E-09 | 4.459E+10 | 3.937E-18 |
|---|
| T=10.00K | nu (GHz) | ncr (cm-3) |
| 1-->0 | 89.1885230 | 1.640E+05 |
| 2-->1 | 178.3750650 | 1.078E+06 |
| 3-->2 | 267.5576190 | 3.443E+06 |
| 4-->3 | 356.7342880 | 9.099E+06 |
| 5-->4 | 445.9029960 | 1.731E+07 |
| 6-->5 | 535.0617755 | 3.357E+07 |
| 7-->6 | 624.2086733 | 6.207E+07 |
| 8-->7 | 713.3420900 | 9.945E+07 |
| 9-->8 | 802.4583290 | 1.578E+08 |
| 10-->9 | 891.5579242 | 2.176E+08 |
| HCN |
|---|
| Composition | Rotation Const | Dipole Moment |
|---|
| 2x10-8 | 4.430E+10 | 2.992E-18 |
|---|
| T=10.00K | nu (GHz) | ncr (cm-3) |
| 1-->0 | 88.6316023 | 2.196E+06 |
| 2-->1 | 177.2611115 | 1.449E+07 |
| 3-->2 | 265.8864343 | 5.591E+07 |
| 4-->3 | 354.5054779 | 1.213E+08 |
| 5-->4 | 443.1161493 | 2.422E+08 |
| 6-->5 | 531.7163479 | 4.014E+08 |
| 7-->6 | 620.3040022 | 6.824E+08 |
| 8-->7 | 708.8770051 | 2.210E+09 |
| 9-->8 | 797.4332623 | 3.850E+09 |
| 10-->9 | 885.9706949 | 6.511E+09 |
2x10-8(CB17 Turner et al 97; TMC1 Ohishi et al.92),
4x10-9(L183 Ohishi et al.92) from B.E.Turner et al. 2001 |
|---|
Kohji Tomisaka