Table 3
Column density ratios with CH3OH as reference.
CH3NH2/CH3OH | NH2CHO/CH3OH | CH3CN/CH3OH | References | ||||||
---|---|---|---|---|---|---|---|---|---|
13CH3CN | CH3C15N | ||||||||
CH3OH reference | 13C | 18O | 13C | 18O | 13C | 18O | 13C | 18O | |
MM1 II | 5.9 × 10−3 | 2.5 × 10−3 | 1.5 × 10−4 | 6.5 × 10−5 | 4.6 × 10−3 | 2.0 × 10−3 | 3.0 × 10−3 | 1.3 × 10−3 | This work |
MM2 I | 1.5 × 10−3 | 9.2 × 10−4 | 1.9 × 10−4 | 1.1 × 10−4 | 2.1 × 10−3 | 1.3 × 10−3 | 1.9 × 10−3 | 1.1 × 10−3 | This work |
MM3 I | 5.4 × 10−4 | 4.8 × 10−4 | ≤9.0 × 10−6 | ≤7.9 × 10−6 | 1.0 × 10−3 | 8.9 × 10−4 | 1.7 × 10−3 | 1.5 × 10−3 | This work |
Model F | 7.3 × 10−3 | 0.04 | 4.5 × 10−4 | 1 | |||||
Model M | 4.0 × 10−3 | 0.02 | 2.3 × 10−4 | 1 | |||||
Model S | 1.8 × 10−3 | 0.76 | 3.4 × 10−4 | 1 | |||||
Sgr B2(M) | 8.0 × 10−3 | 2.5 × 10−3 | 0.03 | 2 | |||||
Sgr B2(N) | 0.03 | 0.07 | 0.11 | 2 | |||||
Sgr B2(N) | 0.10 | 0.04 | 2.8 × 10−3 | 3 | |||||
Sgr B2(N2–5)(a) | – | 8.3 × 10−3 – 0.09(b) | 0.06 – 0.13 | 4 | |||||
Orion KL Compact Ridge | – | 1.7 × 10−3 | 0.01 | 5 | |||||
IRAS 16293–2422B | ≤5.3 × 10−5 | 10−3 | 4 × 10−3 | 6, 7, 8, 9 |
Notes. The uncertainty on the column density ratios derived towards NGC 6334 I is estimated to be 40% (see Sect. 2). (a) Range of values derived for the cores N2, N3, N4, and N5. (b)Excluding the upper limit on NH2CHO for N4.
References. (1) Garrod (2013); (2) Belloche et al. (2013); (3) Neill et al. (2014); (4) Bonfand et al. (2017); (5) Crockett et al. (2014); (6) Coutens et al. (2016); (7) Ligterink et al. (2018); (8) Jørgensen et al. (2018); (9) Calcutt et al. (2018).
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.