Table 3
Column densities resulting from the multi-component analysis.
| B1-c | S68N | |||||||
|---|---|---|---|---|---|---|---|---|
| Component 1: warm/hot | Component 2: cold | Component 1: warm/hot | Component 2: cold | |||||
| Species | N (cm−2) | X/CH3OH (%) | N (cm−2) | X/CH3OH (%) | N (cm−2) | X/CH3OH (%) | N (cm−2) | X/CH3OH (%) |
| CH3OH | (1.9 ± 0.6) × 1018 | ≡100 | (1.2 ± 0.7) × 1016 | ≡100 | (1.4 ± 0.6) × 1018 | ≡100 | <4.8 × 1014 | ≡100 |
| 13CH3OH | (1.8 ± 0.2) × 1016 | 1.0 ± 0.3 | (1.7 ± 1.0) × 1014 | ≡1.43 | (1.0 ± 0.1) × 1016 | 0.7 ± 0.3 | <1.0 × 1014 | ≡1.43 |
CH OH |
(3.4 ± 1.1) × 1015 | ≡0.18 | <7.0 × 1015 | <62 | (2.5 ± 1.1) × 1015 | ≡0.18 | <1.6 × 1015 | –(1) |
| CH2DOH | (1.6 ± 0.1) × 1017 | 8.4 ± 2.8 | <1.6 × 1014 | <15 | (6.0 ± 0.7) × 1016 | 4.3 ± 1.9 | <1.0 × 1014 | –(1) |
| CH3CH2OH | (1.5 ± 0.3) × 1016 | 0.8 ± 0.3 | (1.2 ± 0.2) × 1015 | 9.8 ± 6.1 | (3.0 ± 0.2) × 1015 | 0.22 ± 0.09 | <1.0 × 1014 | –(1) |
| CH3CHO | (4.6 ± 1.0) × 1015 | 0.24 ± 0.10 | (1.8 ± 0.2) × 1014 | 1.5 ± 0.9 | (1.0 ± 0.1) × 1015 | 0.07 ± 0.03 | <1.0 × 1014 | –(1) |
| CH3OCHO | (1.9 ± 0.1) × 1016 | 1.0 ± 0.3 | (4.7 ± 0.3) × 1014 | 3.8 ± 2.3 | (1.6 ± 0.2) × 1016 | 1.1 ± 0.5 | (1.0 ± 0.5) × 1014 | >1(2) |
| CH3OCH3 | (2.4 ± 0.1) × 1016 | 1.3 ± 0.4 | <1.0 × 1014 | <0.22 | (1.2 ± 0.1) × 1016 | 0.9 ± 0.4 | <1.0 × 1014 | –(1) |
| t-HCOOH | (7.0 ± 2.0) × 1014 | 0.04 ± 0.02 | (2.2 ± 0.2) × 1014 | 1.8 ± 1.1 | (9.1 ± 2.1) × 1014 | 0.07 ± 0.03 | <1.0 × 1014 | –(1) |
Notes. The values of the warm/hot Component 1 are the same as derived for Band 6 in a 0.45″ beam and are fixed during the fitting (typical Tex ~ 200 K). Component 2 represents cold (typicalTex = 60 K), more extended material in a 2.0″ beam. The column density of CH3 OH is determined by scaling from
13CH3OH for Band 3 and CH
OH for Band 6 using 12C∕13C = 70 and 16O∕18O = 560. Abundance ratio’s which are set to their respective isotope ratio are indicated with a ≡ symbol. (1) No abundance is computed since the column densities of both this species and CH3 OH are upper limits. (2) Lower limit to the abundance due to an upper limit of the CH3OH column density.
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