Table C.1
Peak fractional abundances used in Fig. 8.
| Molecule | R Dor | IK Tau | M-type | χ Cyg | W Aql | S-type | V Aql | IRC +10 216 | C-type |
|---|---|---|---|---|---|---|---|---|---|
| HCN | 9.0(−8)(1) | 2.2(−7)(2) | 1.2(−7)(1) | 5.0(−6)(3) | 3.1 ± 0.1(−6)(4) | 7.0(−7)(1) | 1.3(−5)(1) | 2.0(−5)(5) | 2.5(−5)(1) |
| CS | – | 4.0(−8) (2) | 8.0(−8)(6) | 1.0(−7)(3) | 1.2 ± 0.05(−6)(7) | 5.0(−7) (6) | 1.0(−5)(8) | 4.0(−6)(5) | 7.0(−6) (8) |
| SiS | – | 5.5(−6) (2) | 1.1(−6) (6) | 1.8(−7) (3) | 1.5 ± 0.05(−6)(7) | 6.0(−7) (6) | 2.3(−6)(8)(†) | 3.0(−6)(5) | 1.0(−5)(8) |
| SiO | 2.0(−5)(9) | 2.0(−7)(2) | 5.0(−6)(10) | 1.3(−5)(3) | 2.9 ± 0.7(−6)(4) | 6.0(−6)(11) | 2.5(−6)(8) | 1.8(−7)(5) | 3.8(−6)(12) |
| H2O | 2.5(−4)(13) | 4.2(−4) (13) | – | 1.2(−5)(3) | 1.5 ± 0.5(−5)(4) | – | – | 1.0(−7)(5) | – |
| NH3 | – | 6.0(−7)(14) | – | 1.8(−8) (3)(†) | 1.7 ± 1.0(−5)(4) | – | – | 6.0(−8)(15) | – |
| CN | – | 3.0(−8) (2) | – | 1.9(−5) (3) | 5.7(−6)(4) | – | – | 1.7(−6)(16) | – |
| SiC2 | – | – | – | – | 5.0 ± 2.0(−7) | – | 2.0(−5)(17) | 3.7(−7)(17) | 6.3(−6)(17) |
| C2H | – | – | – | – | 1.0(−5)(‡) | – | – | 2.0(−5)(18) | – |
| HNC | – | 8.0(−9)(19) | – | – | 3.1(−8) (‡) (*) | – | – | 7.0(−8)(20) | – |
| HC3N | – | – | – | – | 8.4(−7) (†) | – | – | 1.4(−6)(16) | – |
| SiN | – | – | – | – | 4.0(−8)(‡) | – | – | 8.0(−9)(16) | – |
| H2S | – | 1.6(−6)(21) | – | – | 5.0(−7)(†) | – | – | 4.0(−9)(5) | – |
| PN | – | 3.0(−7)(22) | – | – | 3.0(−7)(†) | – | – | 1.0(−9)(16) | – |
| HCO+ | – | 1.0(−8) (19) | – | – | 7.0(−8) (†) | – | – | 4.1(−9)(23) | – |
| NaCl | – | 3.1(−7) (19) | – | – | 3.1(−8) (†) | – | – | 1.8(−9)(5) | – |
| SO | 6.7(−6)(24) | 1.0(−6)(24) | – | – | 1.0(−6) (†) | – | – | – | – |
| SO2 | 5.0(−6)(24) | 8.6(−7) (24) | – | – | 5.0(−6)(†) | – | – | – | – |
Notes. Fractional abundances a × 10b are listed as a(b), (a ± e) × 10b as a ± e(b). Where no reference is given, the abundance is estimated in this work. (†) Upper limit. (‡)We propose an order of magnitude uncertainty, based on the uncertainties described in our analysis. (*) The HNC abundance was derived assuming HNC/H2 = 0.01 ×HCN/H2.
References. (1) Schöier et al. (2013), (2) Decin et al. (2010), (3) Schöier et al. (2011), (4) Danilovich et al. (2014), (5) Agúndez et al. (2012), (6) Danilovich et al. (2018), (7) Brunner et al. (2018), (8) Massalkhi et al. (2019), (9) De Beck & Olofsson (2018), (10) González Delgado et al. (2003), (11)Ramstedt et al. (2009), (12)Schöier et al. (2006), (13)Maercker et al. (2016), (14)Wong et al. (2018), (15)Schmidt et al. (2016), (16)Agúndez (2009), (17) Massalkhi et al. (2018), (18) De Beck et al. (2012), (19) Velilla Prieto et al. (2017), (20)Daniel et al. (2012), (21)Danilovich et al. (2017), (22)De Beck et al. (2013), (23)Pulliam et al. (2011), (24)Danilovich et al. (2016).
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