Table 6
Column densities, excitation temperatures, FWHM and vpeak derived at thepeak positions of CH3OH (position 2 inFig. 12).
| Molecule | Column density | Tex | FWHM | vpeak | Peak position (a) |
|---|---|---|---|---|---|
| (cm−2) | (K) | (km s−1) | (km s−1) | ||
| COMs and O-bearing species | |||||
| CH3OH (b) | 1.0 (0.2) × 1019 | 120 (25) | 4.5 | 9.0 | 2 |
| 13CH3OH | 1.3(0.2) × 1017 | 120 (25) | 4.5 | 9.0 | 1/2 |
| CH3 18OH (c) | <3.0 × 1016 | 100 | 4.5 | 9.0 | – |
| CH2DOH (c) | <4.0 × 1016 | 100 | 4.5 | 9.0 | – |
| C2H5OH | 6.7(2.0) × 1016 | 130 (60) | 5.0 | 9.5 | 1 |
| CH3OCHO | 1.4(0.2) × 1017 | 110 (20) | 4.5 | 9.0 | 1 |
| CH3OCH3 | 2.4(0.2) × 1017 | 110 (20) | 5.0 | 9.0 | 1 |
| H2CO (b) | 5.9(1.5) × 1017 | 160 (40) | 8.0 | 9.0 | 1 |
| H2 13CO | 7.6(2.0) × 1015 | 160 (40) | 8.0 | 9.0 | 1 |
| t-HCOOH | 4.0(0.5) × 1016 | 190 (50) | 7.0 | 11.0 | 3 |
| c-HCOOH (c) | <3.3 × 1015 | 190 | 7.0 | 11.0 | - |
| HDO (d) | 6.8(2.0) × 1016 | 120 (25) | 4.0 | 10.5 | – |
| S-bearing species | |||||
| H2CS | 3.3(0.5) × 1016 | 140 (50) | 5.5 | 9.0 | 1 |
| 33SO (e) | 5.4(2.0) × 1015 | 130 (40) | 6.5 | 10.0 | 3 |
| SO2 (b) | 7.3(0.2) × 1017 | 130 (40) | 6.0 | 10.0 | 3 |
| 33SO2 (c) | <8.1 × 1015 | 130 (40) | 6.0 | 10.0 | – |
| 34SO2 | 3.3(1.0) × 1016 | 130 (40) | 6.0 | 10.0 | 3 |
| OCS (a) | 2.4(0.4) × 1017 | 170 (50) | 5.0 | 10.0 | 2 |
| OC34S | 1.1(0.2) × 1016 | 170 (50) | 5.0 | 10.0 | 1 |
| N-bearing species | |||||
| HNCO | 5.0(1.0) × 1016 | 150 (20) | 6.5 | 10.5 | 3 |
| HC3N | 4.0(1.0) × 1015 | 210 (40) | 7.0 | 10.0 | 3 |
| CH3CN, v8=1 (f) | 5.5(2.0) × 1016 | 140 (10) | 7.0 | 10.5 | 2/3 |
| 13CH3CN (c) | < 9.1 × 1014 | 140 | 7.0 | 10.5 | – |
Notes. Values are derived from synthetic spectrum fitting with CASSIS, with the assumption of LTE. (a)Positions of peak molecular emission are as represented in Fig. 12. (b)Column densities for optically thick lines derived using ISM ratios from Wilson & Rood (1994). (c)Upper limits were determined by setting Tex, FWHM, and vpeak, equal to that of a detected isotopologue. (d)To estimate a column density for HDO, the excitation temperature of methanol was assumed. (e)Both SO and 34SO had optically thick lines, so only the column density of 33SO could be derived, using Tex of 34SO2. (f)CH3CN, v8 =1, was used for the model fit of CH3CN because it is optically thick, and 13CH3CN was not detected.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.