Table A.1
Observed C3H2c/l ratios toward various objects, and the associated physical conditions (visual extinction AV, medium density n, (rotational) temperature T) when available in the literature.
| Source | AV [ mag ] | n [ cm-3 ] | T rot a [ K ] | c/l ratio | Reference |
|
|
|||||
| Prestellar cores | |||||
| TMC-1(CPb) | 3 × 104 | 7 | 70 | Cernicharo et al. (1991) | |
| TMC-1(CP) | 3 × 104 | 7 | 25 | Turner et al. (2000) | |
| TMC-1(CP) | 3 × 104 | 7 | 20−40 | Kawaguchi et al. (1991) | |
| TMC-1(CP) | 3 × 104 | 7 | 28 | Fossé et al. (2001) | |
| TMC-1(edgec) | 3 × 104 | 7 | 10 | Fossé et al. (2001) | |
| L183 | 50 | Turner et al. (2000) | |||
| TMC-1C | 7 (c), 4 (l) | 67 | Spezzano et al. (2016) | ||
| L1544 | 6 (c), 4 (l) | 32 | Spezzano et al. (2016) | ||
| Protostellar cores | |||||
| L1527 | 7 × 105 | 12 | 12 | Sakai & Yamamoto (2013) | |
| Translucent clouds | |||||
| CB17, CB24, CB228 | 17(average) | Turner et al. (2000) | |||
| Circumstellar envelopes | |||||
| IRC+10216 | 25 | 30 | Cernicharo et al. (1991) | ||
| Diffuse clouds | |||||
| W49N | T CMB d | 4 | Kulczak-Jastrzȩbska et al. (2012) | ||
| W51 | T CMB | 13 | Kulczak-Jastrzȩbska et al. (2012) | ||
| B0355+508, B0415+379, | T CMB | 15−40 | Liszt et al. (2012) | ||
| B2200+420, B2251+158 | |||||
| PDRs | |||||
| Horsehead Nebula (edgee) | < 104 f | 3−5 | Teyssier et al. (2005) | ||
| Horsehead Nebula (dense cloude) | 10-20 | 2 × 105 f | 15 | Teyssier et al. (2005) | |
| Orion Bar | 17 (c), 26 (l) | 34 | Cuadrado et al. (2015) | ||
Notes.
The rotational temperature of c and/or lC3H2, which may not be equal to the kinetic temperature.
The edge position is (−40, 0) offset from the CP position α2000 = 4h 41m 42.5s, δ2000 = 25° 41′ 27′′ (Kawaguchi et al. 1991).
The edge and cloud positions are (by estimation) (−20, −15) and (−72, −62) offset from the (0, 0) position (Teyssier et al. 2005).
Density corresponds to the model presented by Pety et al. (2012).
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