Table 2
LTE and non-LTE analysis results for core 869.
| Species | Tex | Tk |  |
N | X (a) | |
|---|---|---|---|---|---|---|
| (K) | (K) | (cm−3) | (cm−2) | |||
| LTE | ||||||
| H2CCO | 13–14 | 5–6 × 1011 | 3.2–3.8 × 10−11 | |||
| HNO | 10–14 (b) | 8–16 × 1011 | 5.1–10.2 × 10−11 | |||
| CCS | 10–14 (b) | 10–15 × 1010 | 6.4–9.5 × 10−12 | |||
| o-c-C3H2 | 10–14 (b) | 3–5 × 1011 | 1.9–3.2 × 10−11 | |||
| p-c-C3H2 | 10–14 (b) | 10–14 × 1010 | 6.4–8.9 × 10−12 | |||
| CH3O | 10–14 (b) | 4–6 × 1011 | 2.6–3.8 × 10−11 | |||
| OCS | 10–14 (b) | 2.5–3.5 × 1012 | 1.6–2.2 × 10−10 | |||
| C4H | 10–14 (b) | 9–13 × 1011 | 5.7–8.3 × 10−11 | |||
| E-CH3CHO | 10–14 (b) | 6–11 × 1010 | 3.8-7.0 × 10−12 | |||
| A-CH3CHO | 10–14 (b) | 6–11 × 1010 | 3.8–7.0 × 10−12 | |||
| NS+ | 10–14 (b) | 1.5–2.2 × 1010 | 9.6–14.1 × 10−13 | |||
| CH3SH | 10–14 (b) | 1.5–3.5 × 1011 | 1.0–2.2 × 10−11 | |||
| o-H2CS | 10–14 (b) | 5–7 × 1011 | 3.2–4.5 × 10−11 | |||
| Non-LTE | ||||||
| A/E-CH3OH | 10–14 | 6–30 × 103 | 7–20 × 1012 | 5.1–12.7 × 10−10 | ||
| HC18O+ | 10–14 (b) | 6–30 × 103 | 1.2–6.5 × 1010 | 7.6–41.4 × 10−13 | ||
| HCS+ | 10–14 (b) | 6–30 × 103 | 7–14 × 1010 | 4.5–8.3 × 10−12 | ||
| CS | 10–14 (b) | 6–30 × 103 | 4–26 × 1012 | 2.5–16.6 × 10−10 | ||
| C34S | 10–14 (b) | 6–30 × 103 | 3–4.8 × 1011 | 1.9–3.1 × 10−11 | ||
| C34S ×32S∕34S(c) | 8.1–17.8 × 1012 | 5.2–11.3 × 10−10 | ||||
| SO | 10–14(b) | 6–30 × 103 | 8–30 × 1012 | 4.5–19.1 × 10−10 | ||
| 34SO | 10–14(b) | 6–30 × 103 | 5–9 × 1011 | 3.2–5.7 × 10−11 | ||
| 34SO ×32S∕34S(c) | 13.5–33.3 × 1012 | 8.6–21.2 × 10−10 | ||||
| OCS | 10–14(b) | 6–30 × 103 | 2.5–4.0 × 1012 | 1.6–2.6 × 10−10 | ||
Notes. The quoted error is the 3σ (statistical and calibration) error from the fitting. (a)Abundances derived using the H2 column density N(H2) = 1.57 × 1022 cm−2, adopted from Montillaud et al. (2015). The value is the average of the source (reff = 36′′). (b)The temperature (and the volume density) was fixed to results derived from methanol. (c)32S∕34S = (3.3 ± 0.5) (DGC/kpc) + 4.1 ± 3.1(~32 ± 5 for our cores), adopted from Chin et al. (1996).
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