Table 8
NH3(10 → 00), CO(6 → 5), o-H2O(11,0 → 10,1) and HCN(13 → 12) line intensity ratios for W Aql and the M and C stars in HIFISTARS for which NH3 was detected (except IRC+10216).
| Classification | Star | I NH3 | I CO | I o−H2O | I HCN | I NH3/I CO | I o−H2O/I CO | I HCN/I CO | Ref. |
| [K km s-1] | [K km s-1] | [K km s-1] | [K km s-1] | ||||||
|
|
|||||||||
| S stars | W Aql | 0.85 | 14.1 | 2.0 | 3.5 | 0.06 | 0.14 | 0.25 | This work |
| χ Cyg | < 0.07 | 14.3 | 2.91 | 1.49 | < 0.004 | 0.20 | 0.10 | 3 | |
|
|
|||||||||
| M stars | IRC+10011 | 2.2 | 4.4 | 7.1 | ... | 0.50 | 1.61 | ... | 1 |
| IK Tau | 4.7 | 11.6 | 9.4 | ... | 0.41 | 0.81 | ... | 1 | |
| R Dor | 0.5 | 14.9 | 10.2 | 1.9 | 0.03 | 0.68 | 0.13 | 1 | |
| TX Cam | 1.5 | 14.2 | 5.8 | ... | 0.11 | 0.41 | ... | 1 | |
| W Hya | 0.5 | 9.6 | 5.4 | 1.4 | 0.05 | 0.56 | 0.15 | 1 | |
| AFGL 5379 | 1.7 | 7.8 | 9.7 | ... | 0.22 | 1.24 | ... | 1 | |
| OH 26.5 | 0.8 | 1.7 | 3.1 | ... | 0.47 | 1.82 | ... | 1 | |
| R Cas | 0.3 | 14.7 | 6.9 | ... | 0.02 | 0.47 | ... | 1 | |
|
|
|||||||||
| C stars | V Hya | 0.03 | 13.9 | 0.6 | 5.6 | 0.002 | 0.04 | 0.4 | 2 |
| RW LMi | 2.1 | 34.1 | 2.9 | 13.3 | 0.06 | 0.08 | 0.4 | 2 | |
| II Lup | 3.0 | 16.4 | 1.4 | 7.2 | 0.2 | 0.09 | 0.4 | 2 | |
| LP And | 0.7 | 9.0 | 0.4 | 4.2 | 0.08 | 0.04 | 0.5 | 2 | |
| V Cyg | 0.6 | 9.1 | 1.4 | 4.3 | 0.07 | 0.15 | 0.5 | 2 | |
| V384 Per | 0.8 | 6.0 | 0.8 | ... | 0.13 | 0.13 | ... | 2 | |
Reference. (1) Intensity values taken from Justtanont et al. (2012); (2) intensities from M Schmidt, private correspondence; (3) intensities from Schöier et al. (2011).
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