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Table 1

Relevant statistics for the NYMGs analysed in this study.

Name Alit
(Myr)		 N NRV dmean
(pc)		 Ndet Ndet,0.1 fr fr,0.1 fp fp,0.1 mc (M⊙) σc α Mass
(M⊙)		 Mass (Slit)
(M⊙)
BPMG 26 170 85 57 ± 9 92 51 0.26 0.33 0.81 1.00 0.50 ± 0.16 0.60 ± 0.16 −2.36 ± 0.13 29.07 66.64
CAR 45 161 73 87 ± 12 127 73 0.25 0.33 0.92 1.00 0.28 ± 0.15 0.35 ± 0.17 −1.73 ± 0.16 38.37 55.10
COL 42 249 110 91 ± 22 365 202 0.35 0.45 0.74 0.96 0.32 ± 0.17 0.50 ± 0.16 −3.20 ± 0.15 101.94 87.55
GRSCOS16 18 49 20 132±4 69 39 0.73 0.97 1.00 0.80 0.28 ± 0.18 0.50 ± 0.17 −2.16 ± 0.12 19.34 22.63
GRSCOS2 43 85 38 129 ± 14 442 276 0.14 0.14 0.94 0.58 0.28 ± 0.17 0.40 ± 0.17 −2.43 ± 0.06 121.58 37.09
GRSCOS27D 23 182 94 111 ±4 225 117 0.15 0.23 1.00 0.89 0.32 ± 0.16 0.35 ± 0.18 −1.14 ± 0.12 51.78 77.49
HSC1373 44 41 11 145 ± 9 81 41 0.87 1.00 1.00 0.62 0.32 ± 0.16 0.50 ± 0.17 −3.05 ± 0.16 21.25 9.74
HSC1733 64 53 12 120 ± 25 254 144 0.41 0.53 0.63 0.86 0.28 ± 0.16 0.40 ± 0.17 −2.08 ± 0.09 67.74 20.35
HSC1923 85 98 20 144 ± 20 146 78 0.65 0.84 0.86 0.79 0.28 ± 0.15 0.40 ± 0.18 −2.60 ± 0.09 36.44 31.79
HSC1964 88 282 98 138 ± 30 800 442 0.81 0.91 0.72 0.55 0.32 ± 0.17 0.40 ± 0.17 −2.79 ± 0.16 243.68 114.03
HSC2597 35 79 22 159 ± 19 296 166 0.67 0.82 0.89 0.77 0.25 ± 0.17 0.45 ± 0.17 −2.89 ± 0.08 78.54 26.75
HSC958 41 140 29 175 ± 8 148 89 0.66 0.95 0.65 0.76 0.25 ± 0.16 0.45 ± 0.17 −3.60 ± 0.13 40.02 46.84
OCSN99 93 51 15 142 ± 13 242 139 0.85 0.91 0.72 0.60 0.32 ± 0.17 0.40 ± 0.17 −1.80 ± 0.13 77.68 17.99
OCT 35 187 56 168 ± 19 445 243 0.34 0.52 0.86 0.96 0.28 ± 0.17 0.45 ± 0.17 −3.12 ± 0.17 121.28 62.14
RATZSCO12 19 83 21 160 ± 3 41 24 0.28 0.43 1.00 0.86 0.22 ± 0.14 0.45 ± 0.18 −1.38 ± 0.11 11.88 25.07
RATZSCO14 15 279 104 139 ± 6 429 216 0.16 0.27 1.00 0.95 0.25 ± 0.15 0.35 ± 0.16 −2.08 ± 0.14 93.60 110.32
RATZSCO17 21 201 57 153 ± 11 237 135 0.14 0.20 1.00 0.88 0.28 ± 0.16 0.40 ± 0.17 −1.50 ± 0.11 63.54 63.27
RATZSCO19 14 112 42 123 ± 4 113 61 0.13 0.23 1.00 1.00 0.18 ± 0.13 0.40 ± 0.17 −2.10 ± 0.12 30.09 46.18
RATZSCO31 14 62 18 132±5 67 33 0.50 0.52 1.00 0.63 0.25 ± 0.16 0.45 ± 0.17 −0.65 ± 0.24 13.08 15.56
TAUMGLIU13 33 14 4 123 ± 9 338 196 1.00 1.00 0.92 1.00 0.28 ± 0.18 0.50 ± 0.17 −2.24 ± 0.10 112.79 5.42
THA 40 284 153 51 ± 10 146 88 0.33 0.45 0.98 0.93 0.18 ± 0.15 0.45 ± 0.17 −2.33 ± 0.10 33.62 95.13
TWA 10 122 62 71 ± 7 78 35 0.17 0.19 0.98 1.00 0.22 ± 0.20 0.80 ± 0.12 −2.41 ± 0.07 15.57 33.55
UTAU 50 30 5 183 ± 8 79 46 0.87 1.00 0.76 0.69 0.28 ± 0.17 0.45 ± 0.17 −1.17 ± 0.23 25.38 17.80
VCA 89 51 26 101 ± 16 187 100 0.88 0.96 0.68 0.60 0.28 ± 0.16 0.40 ± 0.17 −2.58 ± 0.15 46.67 21.29
ETAU1 50 57 12 151 ± 14 395 227 0.91 1.00 0.93 0.56 0.22 ± 0.14 0.40 ± 0.17 −1.76 ± 0.16 131.88 25.27
MUTAU1 61 232 39 151 ± 14 395 227 0.26 0.44 0.93 0.87 0.22 ± 0.14 0.40 ± 0.17 −1.76 ± 0.16 131.88 81.23
TAUMGLIU72 3 15 3 158 ± 6 159 78 0.87 0.87 0.74 1.00 0.18 ± 0.14 0.45 ± 0.16 −1.62 ± 0.24 36.70 3.15
TAUMGLIU82 4 24 9 158 ± 6 159 78 0.91 1.00 0.74 0.71 0.18 ± 0.14 0.45 ± 0.16 −1.62 ± 0.24 36.70 15.31
THOR3 25 60 24 103 ± 12 290 146 0.82 1.00 0.51 0.63 0.18 ± 0.13 0.45 ± 0.16 −2.54 ± 0.17 59.85 14.75
118TAU3 10 48 22 103 ± 12 290 146 0.98 1.00 0.51 0.58 0.18 ± 0.13 0.45 ± 0.16 −2.54 ± 0.17 59.85 17.62
GRTAUS9B4 12 33 14 171 ± 9 306 160 0.97 1.00 0.57 0.66 0.22 ± 0.17 0.60 ± 0.15 −2.55 ± 0.07 58.63 10.75
TAUMGLIU94 8 61 17 171 ± 9 306 160 0.85 1.00 0.57 0.76 0.22 ± 0.17 0.60 ± 0.15 −2.55 ± 0.07 58.63 18.62
GRSCOS27C5 15 111 60 106±4 294 150 0.17 0.27 1.00 0.94 0.32 ± 0.17 0.45 ± 0.17 −2.15 ± 0.15 64.23 49.15
RATZSCO235 10 25 8 106±4 294 150 0.33 0.62 1.00 1.00 0.32 ± 0.17 0.45 ± 0.17 −2.15 ± 0.15 64.23 12.40
GRSCOS106 20 33 15 149 ± 3 64 41 0.76 1.00 1.00 0.84 0.40 ± 0.16 0.55 ± 0.16 −2.88 ± 0.17 22.29 18.03
RATZSCO286 14 29 14 149 ± 3 64 41 0.48 0.76 1.00 0.93 0.40 ± 0.16 0.55 ± 0.16 −2.88 ± 0.17 22.29 18.72
HSC13687 47 87 18 183 ± 8 134 75 0.49 0.83 1.00 0.88 0.22 ± 0.12 0.35 ± 0.17 −4.32 ± 0.10 25.04 30.24
TAUMGLIU187 39 29 1 183 ± 8 134 75 0.52 0.92 1.00 1.00 0.22 ± 0.12 0.35 ± 0.17 −4.32 ± 0.10 25.04 5.40
TAUMGLIU197 40 18 2 183 ± 8 134 75 0.78 0.78 1.00 1.00 0.22 ± 0.12 0.35 ± 0.17 −4.32 ± 0.10 25.04 4.88
GRTAUS3A8 19 61 12 163 ± 8 66 39 0.44 0.80 0.88 0.84 0.25 ± 0.16 0.55 ± 0.16 −2.21 ± 0.13 14.50 10.93
GRTAUS3B8 14 10 2 163 ± 8 66 39 1.00 1.00 0.88 1.00 0.25 ± 0.16 0.55 ± 0.16 −2.21 ± 0.13 14.50 2.95
TAUMGLIU159 29 28 4 189 ± 8 375 216 0.78 0.85 0.80 0.61 0.22 ± 0.14 0.40 ± 0.17 −1.51 ± 0.18 116.36 13.85
TAUMGLIU209 42 42 13 189 ± 8 375 216 0.93 1.00 0.80 0.55 0.22 ± 0.14 0.40 ± 0.17 −1.51 ± 0.18 116.36 15.98
TAUMGLIU219 40 36 10 189 ± 8 375 216 0.97 1.00 0.80 0.47 0.22 ± 0.14 0.40 ± 0.17 −1.51 ± 0.18 116.36 13.08
Mean 34 93 34 140 ± 11 228 126 0.59 0.71 0.86 0.81 0.27 ± 0.06 0.45 ± 0.09 −2.27 ± 0.75 61.35 33.91
All − 4104 1474 − 7530 4166 0.44 0.54 0.84 0.76 0.25 ± 0.16 0.45 ± 0.17 −2.26 ± 0.09 2024.41 1492.03

Notes. Name: the names of the groups from Slit recovered using the detection technique presented here. Identical superscripts denote literature groups that were detected as a single group, which we named as indicated by the subscript. Alit: ages from the MOCA catalogue (Gagné 2024). N: total number of sources in Slit. NRV: sources in Slit with RVs from GDR3. dmean: mean distance of the detected group. fr and fr,0.1: recovery relative to the Slit sources with rc > 0 and rc > 0.1, respectively (see Sect. 3.6). fp and fp,01: purity estimated from the purity curves (see Sect. 3.6) and the Slit sources with rc > 0 and rc > 0.1, respectively. Ndet and Ndet,0.1: number of candidate members with rc > 0 and rc > 0.1, respectively. mc, σc and a: characteristic mass, characteristic width, and slope of the parametrisation used to represent the IMFs of the detected groups (see Sect. 4.4). The row All for these columns shows the values for the mean-normalised IMF. Mass and Mass (Slit): mass of the group estimated from integrating the IMF based on our detection and the Slit members respectively. 1EMUTAU group, 2TAUMGLIU-A group, 3THOR-118TAU group, 4TAUMGLIU-GRTAUS group, and 5GRSCOS-RATZSCO-A group, 6GRSCOS-RATZSCO-B group, 7TAUMGLIU-HSC group, 8GRTAUS3 group, and 9TAUMGLIU-B group.

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