Table 3
Spectral line transitions employed in the present study.
| Transition | ν | HPBW |  (a) |
Reference | ||
|---|---|---|---|---|---|---|
| [MHz] | [′′ ] | [pc] | [′′] | [pc] | ||
| o-H2D+ (11, 0 − 11, 1) | 372 421.35580 | 16.8 | 0.034 | 0 | 0 | This work |
| N2H+ (4− 3) | 372 672.526 | 16.7 | 0.034 | 0 | 0 | This work |
| DCO+ (5− 4) | 360 169.7771 | 17.3 | 0.035 | 0 | 0 | This work |
| C18O(2− 1) | 219 560.3568 | 28.4 | 0.058 | 2.2 | 0.004 | Miettinen (2016) (b) |
| C17O(2− 1) | 224 714.199 | 27.8 | 0.057 | 0 | 0 | Miettinen & Offner (2013b) (c) |
| … | … | … | 6.0–18.7 | 0.012–0.038 | Miettinen et al. (2012) | |
| N2D+ (3− 2) | 231 321.912 | 27.0 | 0.055 | 0 | 0 | Miettinen & Offner (2013b) (c) |
| … | … | … | 6.0–18.7 | 0.012–0.038 | Miettinen et al. (2012) | |
| p-NH3 (1, 1) | 23 694.4955 | 40 | 0.081 | 6.0–18.7 | 0.012–0.038 | Miettinen et al. (2010) |
| p-NH3 (2, 2) | 23 722.6333 | 40 | 0.081 | 6.0–18.7 | 0.012–0.038 | Miettinen et al. (2010) |
Notes. (a) Offset with respect to the present o-H2D+ target positions. When this offset is different for different target source, a range of values is quoted (cf. Table 1). (b) The C18O(2−1) line was observed only towards SMM 3. (c)Miettinen & Offner (2013b) studied the prestellar core SMM 6 (their source SMM 6a corresponds to the present target position).
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.