Table 4
Rotational diagram parameters for H2CO in the survey of CrA sources.
| Source name | T Ju = 3 a | T Ju = 5 b | T av c | n | N d |
| [K] | [K] | [K] | [cm-3] | [cm-2] | |
|
|
|||||
| IRS7B | 48.8 ± 6.2 | 43.8 ± 2.7 | 45.3 ± 3.4 | 7.7 × 105 | 1.0 × 1014 |
| Haas4 | < 24.3 | ... | ... | ... | ... |
| IRS2 | 18.9 ± 1.3 | ... | 18.9 ± 1.3 | ... | ... |
| IRS5A | 29.8 ± 2.4 | ... | 29.8 ± 2.4 | 4.0 × 105 | 3.7 × 1013 |
| IRS5N | 28.4 ± 2.1 | ... | 28.4 ± 2.1 | 3.9 × 105 | 3.9 × 1013 |
| IRS1 | 29.5 ± 2.4 | ... | 29.5 ± 2.4 | 4.6 × 105 | 2.8 × 1013 |
| IRS7A | ... | 43.6 ± 3.1 | 43.6 ± 3.1 | ... | ... |
| CrA-24 source | 40.3 ± 4.3 | 28.0 ± 3.1 | 33.2 ± 2.7 | 1.3 × 106 | 2.6 × 1013 |
| CrA-24 outflow | 68.6 ± 12.9 | 103.7 ± 68.1 | 74.2 ± 34.7 | ...e | ...e |
| SMM 2 source | 40.4 ± 5.3 | ... | 40.4 ± 5.3 | 6.3 × 105 | 6.6 × 1012 |
| SMM 2 outflow | 52.6 ± 7.3 | ... | 52.6 ± 7.3 | < 2 × 105 e | > 6 × 1013 e |
| CXO42 | < 87.5 | ... | ... | ... | ... |
| CrA-44 | < 21.2 | ... | ... | ... | ... |
| CrA-33 | < 54.5 | ... | ... | ... | ... |
| VV CrA | 32.7 ± 3.7 | ... | 32.7 ± 3.7 | ... | ... |
Notes. Sources where the fit could not be performed are excluded. The H2 densities n and column densities N were measured by the method described in Appendix F, which can only be made for the sources where both the 303 → 202 and the 505 → 404 lines have been detected. To facilitate comparison between IRS7B and the other sources, only the lines covered by the source survey are included, which explains why IRS7B shows different values here and in Table 3.
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