Table 2
Derived column densities.
| Molecule | Tex (K) | Next (cm−2) | Npeak (cm−2) |
|---|---|---|---|
| NO (north) | 40 | <3.0 × 1014 | |
| NO (north) | 100 | <5.0 × 1014 | |
| NO (south) | 40 | ~6.7 × 1014 | 7.7 × 1014 |
| NO (south) | 100 | ~1.1 × 1015 | 1.3 × 1015 |
| N2O | 40 | <1.8 × 1015 | <1.7 × 1015 |
| N2O | 100 | <6.6 × 1014 | <6.4 × 1014 |
| NO2 | 40 | <2.1 × 1015 | <2.0 × 1015 |
| NO2 | 100 | <5.6 × 1015 | <5.2 × 1015 |
| NH2OH | 40 | <1.3 × 1014 | <1.4 × 1014 |
| NH2OH | 100 | <1.7 × 1014 | <1.8 × 1014 |
| CN | 40 | <2.7 × 1012 | <4.1 × 1013 |
| CN | 100 | <4.1 × 1012 | <6.2 × 1013 |
| C2H | 40 | <1.5 × 1012 | <1.1 × 1013 |
| C2H | 100 | <2.1 × 1012 | <1.5 × 1013 |
| OH | <100 | no constraint | |
| OH | 150 | ≲ 6 × 1014 | |
| OH | > 200 | ≲ 1014 | |
| H2O | <100 | no constraint | |
| H2O | 150 | ≲ 1 × 1014 | |
| H2O | > 200 | ≲ 1014 |
Notes. The upper limits on the column densities of N2O, NH2OH, OH, and H2O derived in the extended region covered by the Keplerian mask Next are derived assuming an emitting region of 1 .4 × 10−11 sr, similar to NO. This is because these species are expected to be closely related to the emitting region of NO. The emitting regions of CN and C2H are assumed to be 8.0 × 10−11 sr (3.4 square arcseconds) and 1.6 × 10−10 sr (7.0 square arcseconds), respectively, using the area covered in the Keplerian mask. The peak column densities Npeak are derived using a spectrum within one beam at the location where the emission is brightest.
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