Table 1
Observed lines, beam sizes, and efficiencies.
| Line | Frequency (MHz)(a) | θbeam(′′)(b) | Feff/Beff |
|---|---|---|---|
| 13CS 2 → 1 | 92 494.28 | 27 | 0.95/0.81 |
| C34S 3 → 2 | 144 617.10 | 17 | 0.93/0.74 |
| CS 3 → 2 | 146 969.03 | 17 | 0.93/0.73 |
| DN13C 1 → 0 | 73 367.75 | 34 | 0.95/0.83 |
| DN13C 2 → 1 | 146 734.00 | 17 | 0.93/0.73 |
| DNC 1 → 0 | 76 305.68 | 32 | 0.95/0.83 |
| DNC 2 → 1 | 152 609.74 | 16 | 0.93/0.72 |
| DCN 1 → 0 | 72 414.93 | 34 | 0.95/0.83 |
| DCN 2 → 1 | 144 828.11 | 17 | 0.93/0.74 |
| N2H+ 1 → 0 | 93 173.38 | 26 | 0.95/0.81 |
| N2D+ 1 → 0 | 77 109.61 | 32 | 0.95/0.83 |
Notes. (a) When hyperfine splitting is present, the frequency shown here is that of the main component. The frequencies are taken from the CDMS catalog except those of the DN13 C lines, taken from SLAIM catalog. (b)The HPBW(′′) is computedas 2460/Freq(GHz), see IRAM 30m Efficiencies.
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