Open Access
Table 1
Characteristics of the studied molecular lines.
| Species | Transition | Frequency | Vel. Res. | Ang. Res. | σb(a) |
|---|---|---|---|---|---|
| (GHz) | (km s−1) | (″) | (mK) | ||
| 12CO | (1 − 0) | 115.271202 | 0.5 | 31 | 91 |
| 13CO | (1 − 0) | 110.201354 | 0.1 | 31 | 74 |
| (2 − 1) | 220.398684 | 0.1 | 31 | 155 | |
| C18O | (1 − 0) | 109.782173 | 0.1 | 31 | 72 |
| (2 − 1) | 219.560354 | 0.1 | 31 | 121 | |
| HCO+ | (1 − 0) | 89.188525 | 0.1 | 31 | 318 |
| H13CO+ | (1 − 0) | 86.754288 | 0.5 | 31 | 45 |
Notes. (a)Median of standard deviations of signal-free channels, after resampling and smoothing (see Sect. 3.4). This corresponds to the typical baseline noise level at the angular and spectral resolutions listed in the table.
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.