Table 2
Post-CE PNe detected at mm wavelengths.
| Nebula | PN G | Telescope | Transition | HPBW | Δv resol. | Intensity | Notes |
|---|---|---|---|---|---|---|---|
| (arcsec) | (km s−1) | (K km s−1) | |||||
| Observed sub-sample | |||||||
| NGC 6778 | 034.5–06.7 | IRAM 30m | 12CO J = 1–0 + H(38)α | 21.3 | 1.0 | 0.58 | 1 |
| 12CO J = 2–1 | 10.7 | 1.0 | 1.4 | 1 | |||
| 13CO J = 2–1 | 11.2 | 1.0 | 0.5 | 1 | |||
| CN v = 0, J = 3∕2–1/2 | 21.7 | 1.0 | 0.18 | 1 | |||
| CN v = 0, J = 1∕2–1/2 | 21.7 | 1.0 | 0.14 | 1 | |||
| H(30)α | 10.6 | 1.0 | 0.3 | 1 | |||
| H(48)β | 22.0 | 1.0 | 0.07 | 1 | |||
| CO+ N = 2–1 | 10.4 | 1.0 | 0.29 | Tentative, 3-line stack | |||
| Sub-sample from the literature | |||||||
| NGC 7293 | 036.1−57.1 | NRAO 12m | 12CO J = 2–1 | 31 | 0.65 | 13.2 | 2 |
| NGC 2346 | 215.6+03.6 | IRAM 30m | 12CO J = 2–1 | 12 | 1.3 | 21 | 3 |
Notes. (1) Additional positions offset 10 arcsec to the east and west along the nebula equator (position angle 114°), and 12.5 and 14 arcsec to the north and south, respectively, along the major axis (PA 24°), observed at similar noise. Flux computed from assumed size as described in Sect. 3; (2) data from Huggins & Healy (1986); (3) data from Huggins et al. (1996).
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