Table B.3
Line parameters for the HCO+, H13CO+ and N2H+ transitions observed towards VLA1623.
| Frequency (MHz) | Eup (K) | Sμ2 (D2) | v (km s-1) | Δv1 / 2 (km s-1) | TMB (K) |  dV (K km s-1) |
Comments |
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8)) |
|
|
|||||||
| HCO+ | |||||||
|
|
|||||||
| 535 061.581 | 89.9 | 90.7 | 3.82(0.04) | 1.2(0.1) | 1.7(0.1) | 2.2(0.4) | D |
| 713 341.228 | 154.1 | 120.9 | 3.6(0.1) | 0.9(0.3) | 0.8(0.4) | 0.7(0.2) | D |
| 980 636.494 | 282.4 | 166.2 | – | – | ≤0.5 | ≤0.5 | ND |
| 1 069 693.891 | 333.8 | 181.3 | – | – | ≤0.3 | ≤0.3 | ND |
|
|
|||||||
| H13CO+ | |||||||
|
|
|||||||
| 520 459.884 | 87.4 | 90.7 | 3.7(0.2) | 0.5(0.5) | 0.2(0.1) | 0.10(0.06) | D |
| 607 174.646 | 116.6 | 105.8 | – | – | ≤0.2 | ≤0.2 | ND |
| 780 562.812 | 187.3 | 136.1 | – | – | ≤0.3 | ≤0.3 | ND |
|
|
|||||||
| N2H+ | |||||||
|
|
|||||||
| 558 966.503 | 93.9 | 669.5 | 3.7(0.1) | 0.7(0.2) | 0.2(0.1) | 0.16(0.06) | D |
| 745 209.868 | 161.0 | 891.6 | – | – | ≤0.3 | ≤0.3 | ND |
| 1 024 443.025 | 295.1 | 1223.1 | – | – | ≤0.2 | ≤0.2 | ND |
Notes. (1)–(3) Spectroscopic line parameters (see references listed in Table 2) of the observed transitions. (4)–(7) Observed line parameters: velocity, linewidth, peak temperature and integrated intensities. The 3σ uncertainties that result from Gaussian fits performed with the CLASS software are given in brackets. (8) D: detected above the 3σ level and dV ≥ 5σ, ND: not-detected lines (TMB< 3σ and dV< 5σ).
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.