Table 4
Peak abundances and abundance ratios for NO-related species obtained from our model and a comparison of peak abundance ratios with the available observation.
| Species | Dark cloud | Hot core | Observation |
|---|---|---|---|
| HONO | 7.7 × 10−13(g)/2.3 × 10−9(s) | 1.5 × 10−11(g)/3.8 × 10−8(s) | – |
| NO | 8.6 × 10−8(g)/8.6 × 10−8(s) | 3.2 × 10−7g/3.2 × 10−8(s) | − |
| N2O | 4.2 × 10−9(g)/4.7 × 10−9(s) | 4.4 × 10−6(g)/8.3 × 10−8(s) | – |
| HNO | 5.8 × 10−9(g)/5.6 × 10−9(s) | 1.5 × 10−10(g)/7.1 × 10−12(s) | – |
| NO2 | 1.2 × 10−10(g)/3.8 × 10−10(s) | 2.5 × 10−13(g)/2.3 × 10−13(s) | – |
| NH2OH | 3.6 × 10−12(g)/2.2 × 10−14(s) | 5.0 × 10−6(g)/2.1 × 10−10(s) | – |
| CH3OH | 9.2 × 10−9(g)/9.2 × 10−9(s) | 3.1 × 10−5(g)/3.3 × 10−5(s) | – |
| HONO/NO | 8.9 × 10−6(g)/0.03(s) | 4.7 × 10−5(g)/1.2(s) | 4.5 × 10−2(c) |
| HONO/N2O | 0.0002(g)/0.5(s) | 3.4 × 10−6(g)/0.4(s) | ≤2.3 × 10−2(c) |
| HONO/HNO | 0.0001(g)/0.4(s) | 0.08(g)/3781(s) | ≥3(c) |
| HONO/NO2 | 0.006(g)/6.1(s) | 56(g)/9.8 × 104(s) | ≥4.5 × 10−2(c) |
| HONO/NH2OH | 0.22(g)/1.0 × 105(s) | 2.9 × 10−6(g)/143(s) | ≥2.3(c) |
| HONO/CH3OH | 8.4 × 10−5g/0.25(s) | 4.8 × 10−7(g)/0.001(s) | 9 × 10−5(c) |
Notes. (c)Coutens et al. (2019) in the low−mass protostellar source IRAS 16293–2422 B.(g) When the BEs from Garrod (2013) are used.(s) When the BEs calculated here are used (otherwise those from Garrod 2013 are used).
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.