Table B.4.
Column density of HCO+, H13CO+, SiO, HNC, HN13C, N2H+, and HCN, and Tex calculated from N2H+ line.
| Source | N(HCO+) | N(H13CO+) | N(SiO) | N(HNC) | N(HN13C) | N(N2H+) | N(HCN) | Tex(N2H+)a |
|---|---|---|---|---|---|---|---|---|
| (×1014 cm−2) | (×1012 cm−2) | (×1012 cm−2) | (×1014 cm−2) | (×1012 cm−2) | (×1012 cm−2) | (×1012 cm−2) | (K) | |
| G008.684−00.367 | 1.4(0.1)e | 3.6(0.2) | 1.4(0.2) | 3.2(0.5) | 11.7(0.8) | 55.8(6.1) | 30.0(3.0) | 5.1(0.2) |
| G008.706−00.414 | 1.2(0.1) | 1.3(0.2) | 0.6(0.1) | 1.3(0.2) | 1.4(0.2) | 9.3(1.4) | 59.7(16.1) | 7.0(2.2)b |
| G010.444−0< 0.117 | 0.1(< 0.1) | 5.2(−)c | 3.0(−) | 0.1(< 0.1) | 10.8(−) | 56.3(44.6) | 8.0(5.3) | 3.1(0.1) |
| G013.178+0< 0.159 | 0.7(< 0.1) | 1.0(0.1) | 0.5(0.1) | 1.3(0.1) | 2.6(0.2) | 15.4(4.7) | 9.3(1.8) | 7.1(1.0) |
| G014.114−00.574 | < 0.1(< 0.1) | 1.6(0.1) | 1.0(−) | 0.4(< 0.1) | 1.8(0.2) | 13.0(1.1) | 4.1(1.4) | 4.7(< 0.1) |
| G014.194−00.194 | 1.5(< 0.1) | 1.6(0.1) | 2.3(0.2) | 0.9(< 0.1) | 2.0(0.2) | 18.0(2.4) | 16.1(2.9) | 5.4(< 0.1) |
| G014.492−00.139 | < 0.1(< 0.1) | 1.6(−) | 1.0(−) | 0.7(0.1) | 1.1(0.3) | 28.0(14.9) | 14.9(6.5) | 3.8(0.3) |
| G014.632−00.577 | 0.6(< 0.1) | 1.4(0.1) | 1.0(0.1) | 0.8(< 0.1) | 2.1(0.1) | 27.9(3.4) | 39.9(15.3) | 7.0(0.7) |
| G018.876−00.489 | 1.6(0.1) | 2.1(0.2) | 0.3(−) | 2.2(0.3) | 3.9(0.4) | 26.9(4.3) | 165.5(40.4) | 11.0(2.3) |
| G309.382−00.134 | 0.4(< 0.1) | 1.1(0.2) | 0.4(−) | 1.8(0.3) | 1.6(−) | 8.0(1.8) | 10.8(5.5) | 23.8(62.3)b |
| G317.867−00.151 | 0.8(0.1) | 1.5(0.2) | 0.6(−) | 1.3(0.3) | 1.4(−) | 10.1(1.9) | 11.0(2.5) | 22.1(40.4)b |
| G318.779−00.137 | 0.5(0.1) | 0.9(0.2) | 0.5(0.1) | 0.8(0.1) | 1.5(0.3) | 8.1(1.8) | 16.3(4.2) | 15.7(9.6)b |
| G320.881−00.397 | 1.2(0.1) | 1.3(0.2) | 0.7(−) | 1.4(< 0.1) | 1.7(−) | 13.8(3.3) | 8.3(1.0) | 5.9(1.1) |
| G326.987−00.031 | 0.5(0.1) | 0.7(0.2) | 1.1(−) | 0.6(0.2) | 1.0(0.2) | 8.9(1.4) | 5.9(1.4) | 7.0(3.0)b |
| G329.029−00.206 | 0.4(< 0.1) | 3.4(0.2) | 4.9(0.3) | 0.8(0.1) | 7.9(0.6) | 116.2(12.5) | 10.2(1.6) | 4.5(0.1) |
| G331.708+00.583_1 | 0.6(< 0.1) | 1.3(0.1) | 2.1(0.3) | 0.5(< 0.1) | 1.7(0.2) | 16.1(1.4) | 9.3(1.5) | 5.9(0.9) |
| G331.708+00.583_2 | 0.6(< 0.1) | 1.9(0.1) | 1.4(0.1) | 0.7(< 0.1) | 2.2(0.2) | 33.5(4.9) | 9.6(1.5) | 5.1(0.3) |
| G333.656+00.059 | 1.4(0.6) | 2.1(0.9) | 1.2(−) | 2.5(0.7) | 5.3(−) | 15.1(11.8) | 19.6(14.6) | 3.8(0.6) |
| G335.789+00.174 | 2.1(0.2) | 1.6(0.5) | 1.9(−) | 6.3(0.2) | 7.4(0.5) | 47.7(2.7) | 55.8(3.9) | 38.0(0.3) |
| G336.958−00.224 | 0.6(< 0.1) | 0.4(0.1) | 0.9(−) | 0.8(< 0.1) | 1.0(0.2) | 5.3(0.9) | 8.8(1.2) | 12.1(0.3) |
| G337.176−00.132 | 0.6(0.1) | 1.3(0.2) | 0.3(−) | 1.4(0.2) | 1.1(−) | 7.7(1.2) | 5.9(1.3) | 17.7(20.8)b |
| G337.258−00.101 | 1.3(0.3) | 0.9(0.3) | 2.2(−) | 1.0(0.2) | 1.2(0.4) | 17.1(9.5) | 5.4(1.6) | 4.0(0.6) |
| G338.786+00.476 | < 0.1(< 0.1) | 0.2(−) | 0.2(−) | 0.2(< 0.1) | 1.4(0.3) | 4.4(1.0) | 7.3(1.4) | 10.1(0.2) |
| G340.784−00.197 | 0.6(0.1) | 0.7(0.1) | 1.2(−) | 0.9(0.1) | 1.4(0.5) | 6.3(1.4) | 12.6(2.7) | 21.9(25.9)b |
| G342.484+00.182 | 0.8(0.1) | 1.1(0.2) | 1.0(−) | 0.9(0.1) | 1.7(−) | 6.0(1.4) | 35.0(14.1) | 22.7(56.1)b |
| G343.756−00.164 | 1.6(0.1) | 2.6(0.2) | 1.0(0.1) | 0.7(< 0.1) | 2.3(0.2) | 28.6(2.8) | 9.9(3.9) | 8.8(1.0) |
| G351.444+00.659 | 5.9(< 0.1) | 8.8(0.1) | 6.4(0.1) | 7.5(< 0.1) | 11.9(0.3) | 275.7(5.0) | 89.8(2.2) | 11.4(< 0.1) |
| G351.571+00.762 | 0.7(0.1) | 1.7(0.2) | 1.1(−) | 0.7(< 0.1) | 0.9(0.2) | 18.7(5.2) | 40.5(15.9) | 5.4(0.6) |
| G353.066+00.452_1 | 0.6(0.1) | 1.1(0.2) | 0.5(−) | 0.4(< 0.1) | 1.2(0.3) | 14.0(6.8) | 35.7(14.3) | 6.0(1.6) |
| G353.066+00.452_2 | 0.9(0.1) | 1.4(0.2) | 0.5(−) | 0.6(0.1) | 0.9(0.2) | 11.6(2.2) | 10.5(2.7) | 9.5(3.3)b |
| G353.066+00.452_3 | 0.8(0.1) | 1.8(0.6) | 0.7(−) | 0.8(0.1) | 2.2(−) | 11.8(9.2) | 10.4(3.5) | 4.5(0.7) |
| G353.417−00.179_1 | 3.8(0.8) | 4.4(1.0) | 1.6(−) | 4.1(0.7) | 3.7(−) | 35.0(24.1) | 8.5(5.4) | 3.7(0.3) |
| G353.417−00.179_2 | 0.3(0.1) | 1.6(0.6) | 3.8(−) | < 0.1(< 0.1) | 8.0(−) | 79.8(74.3) | 322.6(297.2) | 3.3(0.2) |
| G354.944−00.537 | 0.7(0.1) | 1.4(0.2) | 1.3(−) | 0.3(< 0.1) | 1.0(0.3) | 27.6(10.2) | 7.9(2.0) | 4.2(0.3) |
| Meand | 1.1(< 0.1) | 1.8(0.1) | 2.0(< 0.1) | 1.4(< 0.1) | 3.0(0.1) | 31.7(2.8) | 32.8(8.9) | 9.7(2.9) |
| Median | 0.7(0.1) | 1.4(0.1) | 1.4(0.2) | 0.8(0.1) | 1.6(0.2) | 15.7(2.5) | 10.6(3.1) | 6.5(1.7) |
| Std. | 1.1 | 1.5 | 1.8 | 1.6 | 3.2 | 50.2 | 61.5 | 7.8 |
Notes.
Tex is calculated for N2H+ lines as described in Sect. 3.3.
Since the errors on Tex values calculated for these sources are larger than 30%, in column density calculations 22 K or 11 K is used for D8, or D24 clumps, respectively.
Column densities without errors represent the upper limits for non-detections. In these case, a ΔV = 2.0 km s−1 was assumed and the brightness temperatures were set to three times the rms of the spectrum (Tmb = 3Trms). For these cases, no uncertainties are shown in the table.
For the error calculations the Uncertainties: a Python package for calculations with uncertainties by Eric O. Lebigot was used (http://pythonhosted.org/uncertainties/). The errors on optical depths, Tex, and integrated intensities are included in the error calculation of column densities.
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