Table 1
Line parameters obtained from Gaussian fits (Cols. 2–6), and total column densities (beam averaged) of HCNH+ obtained from the spectra of the J = 3−2 line (Fig. 1), as explained in Sect. 3.
| Source | ∫ TMBdV | Vp | FWHM |  |
1σ | Tex (a) | Ntot (HCNH+) | [HCNH+](b) |
|---|---|---|---|---|---|---|---|---|
| K km s−1 | km s−1 | km s−1 | K | K | K | × 1013 cm−2 | × 10−11 | |
| HMSCs | ||||||||
| I00117–MM2 | ≤0.08 | – | 2.5(c) | ≤0.03 | 0.01 | 14 | ≤0.94 | –(d) |
| AFGL5142–EC(e) | 0.10(0.03) | –2.8(0.3) | 2.3(0.8) | 0.041 | 0.014 | 25 | 1.0(0.5) | 1.4(1.0) |
| 05358–mm3(e) | 0.11(0.02) | –16.1(0.3) | 3.0(0.7) | 0.035 | 0.01 | 30 | 1.2(0.5) | 1.7(1.0) |
| G034–G2 | 0.21(0.03) | 42.9(0.3) | 4.3(0.6) | 0.05 | 0.013 | 16 | 2.3(0.8) | 8.6(4.9) |
| G034–F2 | 0.12(0.02) | 58.0(0.2) | 2.5(0.7) | 0.045 | 0.013 | 16 | 1.3(0.5) | 12(8) |
| G034–F1 | 0.10(0.02) | 57.0(0.3) | 2.5(0.7) | 0.037 | 0.012 | 16 | 1.1(0.5) | 14(9) |
| G028–C1 | 0.27(0.02) | 79.5(0.7) | 1.7(0.2) | 0.150 | 0.015 | 17 | 2.8(0.8) | 12(6) |
| I20293–WC(f) | 0.05(0.01) | 7.2(0.2) | 1.4(0.4) | 0.03 | 0.011 | 17 | 0.5(0.2) | 1.0(0.7) |
| I22134–G(e) | ≤0.06 | – | 2.5(c) | ≤0.024 | 0.008 | 25 | ≤0.61 | ≤2.6 |
| I22134–B | ≤0.07 | – | 2.5(c) | ≤0.03 | 0.01 | 17 | ≤0.74 | ≤5.7 |
| HMPOs | ||||||||
| 00117–MM1 | ≤0.07 | – | 1.6(c) | ≤0.039 | 0.013 | 20 | ≤0.67 | –(d) |
| AFGL5142–MM | 0.09(0.02) | –2.3(0.2) | 1.9(0.5) | 0.045 | 0.013 | 34 | 1.0(0.4) | 1.5(1.0) |
| 05358–mm1 | 0.09(0.02) | –16.1(0.2) | 1.4(0.4) | 0.06 | 0.018 | 39 | 1.0(0.5) | 1.9(1.3) |
| 18 089–1732 | 0.18(0.07) | 32.5(0.3) | 2.3(0.6) | 0.07 | 0.020 | 38 | 2(1) | 3.2(2.6) |
| 18 517+0437 | ≤0.06 | – | 1.6(c) | ≤0.033 | 0.011 | 40 | ≤0.69 | ≤1.3 |
| G75–core | ≤0.07 | – | 1.6(c) | ≤0.042 | 0.014 | 96 | ≤1.48 | ≤5.2 |
| I20293–MM1 | 0.09(0.02) | 5.6(0.1) | 1.5(0.2) | 0.058 | 0.013 | 36 | 1.0(0.4) | 3.2(2.0) |
| I21307 | ≤0.03 | – | 1.6(0.3) | ≤0.025 | 0.009 | 21 | ≤0.30 | ≤1.5 |
| I23385 | ≤0.07 | – | 1.6(c) | ≤0.039 | 0.013 | 37 | ≤0.77 | ≤4.9 |
| UCHIIs | ||||||||
| G5.89–0.39 | 0.97(0.04) | 8.1(0.6) | 2.5(0.1) | 0.368 | 0.024 | 32 | 10(3) | 2.9(1.5) |
| I19035–VLA1 | ≤0.11 | – | 2.4(c) | ≤0.042 | 0.014 | 39 | 1.3(0.3) | 5.4(2.4) |
| 19 410+2336 | 0.08(0.01) | 22.5(0.1) | 1.4(0.3) | 0.054 | 0.010 | 21 | 0.8(0.3) | 0.9(0.5) |
| ON1 | 0.22(0.2) | 11.2(0.1) | 3.2(0.3) | 0.065 | 0.010 | 26 | 2.2(0.6) | –(d) |
| I22134–VLA1 | 0.08(0.01) | –18.0(0.1) | 1.8(0.3) | 0.042 | 0.009 | 47 | 1.0(0.4) | 7.3(4.4) |
| 23 033+5951(f) | 0.10(0.02) | –53.4(0.4) | 3.1(1) | 0.031 | 0.011 | 25 | 1.0(0.5) | 2.0(1.4) |
| NGC7538–IRS9 | ≤ 0.08 | – | 2.4(c) | ≤ 0.033 | 0.011 | 32 | ≤0.09 | ≤1.1 |
Notes. (a) The assumed excitation temperatures are the kinetic temperatures listed in Fontani et al. (2011), and are the same used in Colzi et al. (2018a) to derive the column densities of the HCN isotopologues; (b) the HCNH+ abundances relative to H2, [HCNH+], are computed from the H2 column densities given in Fontani et al. (2018), who used averaged values within an area of angular dimension 28′′, and thus the given [HCNH+] are also average values within 28′′; (c) fixed FWHM assumed to compute the upper limit on Ntot (HCNH+), obtained as the average value of the detected lines in the corresponding evolutionary group; (d) column density of H2 not available; (e)warm HMSCs. The other HMSCs are classified as cold (or quiescent; see Fontani et al. 2011). (f) tentative detections.
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