Table 2
Observation parameters.
| Transition | Frequencya | Feff |  |
HPBW |  |
rms in Tmb | Tsys | Modej | Dates |
|---|---|---|---|---|---|---|---|---|---|
| (GHz) | (′′) | (km s−1) | (K) | (K) | |||||
| N2H+(1–0) | 93.1737637b | 0.95 | 0.80 | 26.5 | 0.063 | 0.075–0.140 | 155–176 | OTF | 09–14.07.2014 |
| N2D+(2–1) | 154.2171805c | 0.93 | 0.72 | 16.3 | 0.038 | 0.040–0.100 | 203–627 | OTF | 09–14.07.2014 |
| H13CO+(1–0) | 86.7542884d | 0.95 | 0.81 | 28.5 | 0.068 | 0.110–0.190 | 102–129 | OTF | 02–08.12.2014 |
| 0.140–0.190 | 122–126 | OTF | 03–04.06.2015 | ||||||
| DCO+(2–1) | 144.0772804e | 0.93 | 0.73 | 17.2 | 0.041 | 0.150–0.250 | 115–155 | OTF | 02–08.12.2014 |
| 0.310–0.500 | 198–220 | OTF | 03–04.06.2015 | ||||||
| HC18O+(1–0) | 85.1622231f | 0.95 | 0.81 | 28.5 | 0.069 | 0.026–0.039 | 96–105 | SP | 08.12.2014 |
| 0.020–0.038 | 99–109 | SP | 04.06.2015 | ||||||
| D13CO+(2–1) | 141.4651331g | 0.93 | 0.74 | 17.5 | 0.041 | 0.028–0.039 | 90–96 | SP | 08.12.2014 |
| 0.029–0.059 | 142–164 | SP | 04.06.2015 |
Notes. (a) Frequency of the main hyperfine component; (b)from Pagani et al. (2009); (c) from Pagani et al. (2009) and Dore, priv. comm.; (d)from Schmid-Burgk et al. (2004); (e)from Caselli& Dore (2005); (f)from Schmid-Burgk et al. (2004); (g)from Caselli& Dore (2005); (h)Beff and Feff values are available at the 30 m antenna efficiencies web page http://www.iram.es/IRAMES/mainWiki/Iram30mEfficiencies; (i) Δvres is the velocity resolution; (j)observational mode: OTFis an on-the-fly map, SP is a single-pointing on-off observation towards the DCO+(2–1) emission peak.
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.