Table 1
Line flux densities.
| Line | f rest | E u / k | Peak | ΔV | Integrated | Luminositya | Source size | PA |
|
|
||||||||
| [GHz] | [K] | [mJy beam-1] | [km s-1] | [Jy km s-1] | [107 K km s-1 pc-2] | [FWHM] | [°] | |
|
|
||||||||
| HCN 3–2 | 265.886 | 25.5 | 21.5 ± 0.2 | 308 | 38.2 ± 0.4 | 36.7 | 0.̋33 × 0.̋33 (±0.̋01) | 50 ± 10 |
| Red wing a | 1.9 ± 0.2 | ... | 2.5 ± 0.3 | 2.4 | >0.̋4 | ... | ||
| Blue wing b | 1.2 ± 0.1 | ... | 1.9 ± 0.1 | 1.8 | >0.̋4 | ... | ||
| HCN 3–2 ν2 = 1f | 267.199 | 1050.0 | 1.5 ± 0.1 | ... | 1.6 ± 0.2 | 1.5 | 0.̋17 × 0.̋16 (±0.̋01) | 155 ± 10 |
| HCO+ 3–2 | 267.558 | 25.7 | 10.7 ± 0.1 | 235 | 20.1 ± 0.1 | 19.3 | 0.̋37 × 0.̋36 ( ) |
25 ± 5 |
| HOC+ 3–2 | 268.451 | 25.6 | 0.6 ± 0.1 | ... | 0.7 ± 0.1 | ... | ... | ... |
Notes. Fluxes are calculated from two-dimensional Gaussian fits to the integrated intensity maps of the A+B combined dataset (apart from the line wings – see
below). Maps were produced from integrating flux above the 4σ cut-off. The integrated intensity (for all lines) peaks at α:12:56:14.237, δ: 56:52:25.23 (J2000). Positional errors from the fitting are lower than 0.̋002 (rms). Adding effects of phase and calibration errors the positional accuracy is roughly 0.̋02.
From two-dimensional Gaussian fits to the integrated intensity maps tapered to 0.̋9 resolution in the B-array data. The line wings are integrated between ±(350 and 990) km s-1 and for the luminosity we assume that all the flux is contained inside the tapered B-array beam (where 100 mJy = 2.4 K).
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