Table 6
Properties of MDCs with NH3 detection.
MDC | IR-class | Morph(a) | NH3(b) | Rsel(c) | Msel(d) | συ | συ,NT | συ,ng | Tdust(e) | Tgas | αvir | 𝓜nt | 𝓜ng | NH2(f) |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
(pc) | (M⊙) | (km s−1) | (km s−1) | (km s−1) | (K) | (K) | (1022 cm−2) | |||||||
220 | IR-quiet | Ml | N | 0.082 | 75.1 | 0.61 | 0.52 | 0.47 | 17.8 | 27.3 | 0.5 | 1.7 | 1.5 | 15.8 |
274 | IR-bright | M2 | N | 0.122 | 59.4 | 0.97 | 0.93 | 0.76 | 21.3 | 19.0 | 2.2 | 3.6 | 2.9 | 5.7 |
584 | IR-quiet | Ml | N | 0.055 | 7.4 | 0.34 | 0.23 | 0.23 | 20.3 | 17.4 | 1.0 | 0.9 | 0.9 | 3.5 |
725 | IR-bright | M2 | F | 0.133 | 147.6 | 0.91 | 0.87 | 0.74 | 24.0 | 21.3 | 0.9 | 3.2 | 2.7 | 11.8 |
248 | IR-quiet | Ml | F | 0.117 | 202.1 | 1.06 | 1.01 | 0.99 | 18.2 | 26.2 | 0.8 | 3.3 | 3.3 | 21.0 |
774 | Starless | Ml | F | 0.098 | 25.0 | 0.53 | 0.46 | 0.45 | 16.4 | 18.9 | 1.3 | 1.8 | 1.7 | 3.7 |
714 | IR-bright | Ml | N | 0.059 | 20.5 | 1.37 | 1.35 | 1.23 | 22.7 | 24.8 | 6.3 | 4.5 | 4.1 | 8.3 |
1267 | IR-quiet | Ml | F | 0.155 | 202.5 | 0.44 | 0.37 | 0.31 | 15.3 | 14.7 | 0.2 | 1.6 | 1.4 | 12.0 |
3188 | IR-quiet | Ml | N | 0.067 | 17.9 | 0.27 | 0.39 | 0.31 | 16.3 | 14.1 | 0.3 | 1.7 | 1.4 | 5.7 |
698 | IR-quiet | Ml | F | 0.103 | 81.1 | 0.89 | 0.85 | 0.75 | 17.0 | 20.2 | 1.2 | 3.2 | 2.8 | 10.9 |
1179 | IR-quiet | Ml | F | 0.123 | 35.9 | 0.78 | 0.73 | 0.55 | 16.0 | 17.5 | 2.4 | 2.9 | 2.2 | 3.4 |
532 | IR-quiet | M2 | N | 0.055 | 10.5 | 0.41 | 0.30 | 0.28 | 23.2 | 21.4 | 1.0 | 1.1 | 1.0 | 4.9 |
801 | IR-quiet | M2 | N | 0.117 | 76.3 | 0.55 | 0.48 | 0.45 | 17.8 | 18.4 | 0.5 | 1.9 | 1.7 | 7.9 |
684 | IR-quiet | Ml | F | 0.117 | 109.5 | 0.64 | 0.59 | 0.54 | 17.6 | 19.3 | 0.5 | 2.3 | 2.1 | 11.4 |
327 | IR-quiet | Ml | N | 0.097 | 47.1 | 0.35 | 0.26 | 0.25 | 20.9 | 16.4 | 0.3 | 1.1 | 1.0 | 7.1 |
619 | Starless | Ml | N | 0.057 | 13.7 | 0.45 | 0.36 | 0.31 | 22.2 | 20.3 | 1.0 | 1.3 | 1.1 | 6.0 |
742 | IR-quiet | M2 | N | 0.077 | 21.4 | 0.50 | 0.42 | 0.35 | 27.0 | 24.9 | 1.0 | 1.4 | 1.2 | 5.1 |
310 | IR-quiet | Ml | N | 0.063 | 20.0 | 0.66 | 0.60 | 0.60 | 20.5 | 18.0 | 1.6 | 2.4 | 2.4 | 7.1 |
507 | IR-quiet | Ml | F | 0.138 | 372.5 | 0.68 | 0.63 | 0.61 | 21.4 | 21.2 | 0.2 | 2.3 | 2.2 | 27.8 |
753 | IR-quiet | Ml | F | 0.128 | 189.5 | 0.87 | 0.83 | 0.65 | 17.8 | 23.0 | 0.6 | 2.9 | 2.3 | 16.4 |
798 | IR-quiet | Ml | F | 0.137 | 89.3 | 0.52 | 0.46 | 0.43 | 19.2 | 17.6 | 0.5 | 1.8 | 1.7 | 6.8 |
874 | IR-quiet | Ml | F | 0.152 | 211.0 | 0.61 | 0.55 | 0.40 | 17.9 | 15.9 | 0.3 | 2.3 | 1.7 | 13.0 |
1537 | IR-quiet | Ml | N | 0.099 | 44.7 | 0.67 | 0.62 | 0.58 | 25.3 | 23.7 | 1.2 | 2.1 | 2.0 | 6.5 |
723 | IR-quiet | Ml | N | 0.087 | 33.9 | 0.66 | 0.62 | 0.57 | 16.0 | 14.5 | 1.3 | 2.7 | 2.5 | 6.4 |
509 | IR-quiet | M2 | F | 0.155 | 300.6 | 0.72 | 0.67 | 0.64 | 18.2 | 18.9 | 0.3 | 2.6 | 2.4 | 17.8 |
351 | IR-quiet | Ml | N | 0.081 | 35.0 | 0.69 | 0.64 | 0.49 | 18.3 | 18.2 | 1.3 | 2.5 | 1.9 | 7.6 |
1225 | IR-quiet | Ml | N | 0.131 | 83.6 | 0.66 | 0.62 | 0.43 | 14.3 | 12.3 | 0.8 | 3.0 | 2.1 | 6.9 |
1454 | IR-quiet | M2 | N | 0.158 | 142.7 | 0.59 | 0.52 | 0.37 | 16.2 | 17.4 | 0.4 | 2.1 | 1.5 | 8.1 |
892 | IR-quiet | Ml | N | 0.038 | 3.9 | 0.37 | 0.18 | 0.18 | 31.6 | 29.6 | 1.5 | 0.6 | 0.5 | 3.9 |
540 | IR-quiet | Ml | F | 0.159 | 240.8 | 0.63 | 0.58 | 0.47 | 15.5 | 16.3 | 0.3 | 2.4 | 1.9 | 13.5 |
302 | IR-quiet | M2 | N | 0.08 | 18.1 | 0.48 | 0.39 | 0.35 | 22.3 | 20.3 | 1.2 | 1.5 | 1.3 | 4.0 |
520 | IR-quiet | Ml | N | 0.057 | 8.9 | 0.36 | 0.24 | 0.20 | 23.4 | 18.3 | 1.0 | 0.9 | 0.8 | 3.9 |
340 | IR-quiet | Ml | F | 0.139 | 119.3 | 0.57 | 0.52 | 0.47 | 16.1 | 15.0 | 0.4 | 2.3 | 2.0 | 8.8 |
214 | IR-quiet | Ml | N | 0.084 | 53.4 | 0.84 | 0.78 | 0.77 | 21.2 | 27.2 | 1.3 | 2.5 | 2.5 | 10.7 |
247 | IR-quiet | Ml | N | 0.092 | 41.3 | 0.56 | 0.46 | 0.41 | 21.3 | 20.1 | 0.8 | 1.7 | 1.5 | 6.9 |
Notes. (a)The morphology of NH3. MDCs at the M3 stage are not listed because of their nondetection. (b)Distribution of NH3 within MDCs. “F” for NH3 emission covering almost the whole spatial extent of MDCs and “N” for NH3 emission only covering part of the spatial extent of MDCs. (c)The effective radii of selected regions. (d)The mass of selected regions. (e)Refer to Cao et al. (2021). (ƒ)Measured from the N-map in Cao et al. (2019).
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