Table 7
Calculated and observed column densities (cm-2) for a carbon-rich CSE.
| Species | Calculated | Observed | Agree? | Ref. | Species | Calculated | Observed | Agree? | Ref. |
|
|
|||||||||
| C | 1.9(16)1 | 1.1(16) | Y | 1 | C2 | 4.2(15) | 7.9(14) | Y | 2 |
| C2H | 9.7(15) | 3–5(15) | Y | 1 | CN | 4.1(15) | 1.1(15) | Y | 2 |
| CN− | 7.0(11) | 5(12) | Y | 3 | HCO+ | 1.2(12) | 3–4(12) | Y | 1, 23 |
| CH2NH | 2.3(11) | 9(12) | 21 | C3 | 1.8(14) | 1(15) | Y | 1 | |
| C3H | 1.4(14) | 3–7(13) | Y | 1, 4 | l-C3H2 | 1.1(13) | 3(12) | Y | 24 |
| c-C3H2 | 5.8(13) | 2(13) | Y | 1 | CH2CN | 4.1(12) | 8.4(12) | Y | 5 |
| CH3CCH | 4.9(11) | 1.6(13) | 5 | CH3CN | 5.4(12) | 6–30(12) | Y | 1, 5 | |
| C4H | 6.5(14) | 2–9(15) | Y | 1 | C4H− | 1.3(13) | 7(11) | 6 | |
| C3N | 5.1(14) | 2–4(14) | Y | 1 | C3N− | 1.0(12) | 2(12) | Y | 8 |
| HC3N | 4.8(14) | 1–2(15) | Y | 1 | CH2CHCN | 3.6(10) | 5(12) | 5 | |
| C2S | 1.4(13) | 9–15(13) | Y | 9, 10 | C5 | 1.5(14) | 1(14) | Y | 1 |
| C5H | 4.0(13) | 2–50(13) | Y | 1 | C3S | 1.3(13) | 6–11(13) | Y | 9, 10 |
| C6H | 5.7(14) | 7(13) | Y | 5 | C6H− | 8.3(13) | 4(12) | 5 | |
| C5N | 3.5(13) | 3–6(12) | Y | 1, 4 | C5N− | 7.8(12) | 3(12) | Y | 7 |
| HC5N | 1.4(14) | 2–3(14) | Y | 1 | C7H | 7.3(13) | 1–2(12) | 1, 4 | |
| C8H | 1.2(14) | 5(12) | 1 | C8H− | 2.9(12) | 2(12) | Y | 11 | |
| HC7N | 4.7(13) | 1(14) | Y | 1 | HC9N | 1.3(13) | 3(13) | Y | 1 |
| CP | 2.1(12) | 1(14) | 12 | PN | 5.5(09) | 1(13) | 12 | ||
| C2P | 8.0(09) | 1(12) | 13 | SiC | 9.8(12) | 6(13) | Y | 14 | |
| SiC2 | 1.3(15) | 2(14) | Y | 15 | SiC3 | 1.6(12) | 4(12) | Y | 16 |
| SiC4 | 6.8(10) | 7(12) | 17 | SiN | 2.4(12) | 4(13) | 18 | ||
| SiNC | 1.2(09) | 2(12) | 19 | C3O | 6.0(11) | 1(12) | Y | 20 | |
| H2CS | 3.5(11) | 1(13) | 5 | H2CO | 1.5(11) | 5(12) | 22 | ||
Notes. Of the 46 species below, 31 agree, to within an order of magnitude, with observations. The “Ref.” column gives references for the observed values.
References. (1) See references in Table 5 of Millar et al. (2000); (2) Bakker et al. (1997); (3) Agúndez et al. (2010); (4) Cernicharo et al. (2000); (5) Agúndez et al. (2008); (6) Cernicharo et al. (2007); (7) Cernicharo et al. (2008) ; (8) Thaddeus et al. (2008); (9) Cernicharo et al. (1987); (10) Bell et al. (1993); (11) Remijan et al. (2007); (12) Milam et al. (2008); (13) Halfen et al. (2008); (14) Cernicharo et al. (1989); (15) Thaddeus et al. (1984); (16) Apponi et al. (1999); (17) Ohishi et al. (1989); (18) Turner (1992); (19) Guélin et al. (2004); (20) Tenenbaum et al. (2006); (21) Tenenbaum et al. (2010); (22) Ford et al. (2004); (23) Pulliam et al. (2011); (24) Cernicharo et al. (1991).
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