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Table 1

Observed PN lines.

Rms Beamwidth or Estimated
Transition ν cat Eup/k ν-range δν Line flux noise aperture size source size
J′ − J (MHz) (K) (km  s-1) (km  s-1) (Jy  km  s-1) (mJy) (′′) (′′)

IRAM 30 m
2 − 1 93 979.8 6.8 –21.97 18.73 1.00 1.65 20.1 26 0.65
3 − 2 140 967.7 13.5 –18.13 17.61 0.83 2.60 25.4 17 0.40
SMA survey
6 − 5 281 914.2 47.4 –17.25 14.74 0.86 4.04 50.6 1 × 1 0.20
7 − 6 328 888.0 63.1 –9.63 10.43 2.52 2.04 52.5 1 × 1 0.15

Notes. The respective columns list the observed transition, the rest frequency νcat (obtained from CDMS), the upper-level energy Eup, the velocity range covered by the emission features relative to the stellar LSR velocity, νLSR, i.e. 33.7  km  s-1, the velocity resolution δν, the velocity-integrated intensity, i.e. total line flux, of the emission, the rms noise level at the given δν, the FWHM beamwidth or the aperture size corresponding to the (extracted) observations, and the size of the emission region estimated based on the velocity profile given by Decin et al. (2010).

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