Pattern finding in millimetre-wave spectra of massive young stellar objects

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Volume 694 (February 2025)

A&A, 694 (2025) A20

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Table B.1

Availability of parameters obtained from the COM rotational diagram analysis.

Source	CH₃OH	CH₃CN	CH₃CCH	LLE+GMM groups
(1)	(2)	(3)	(4)	(5)
G013.6562−00.5997	✓	✓	✓	3
G017.6380+00.1566	✓	✓	✓	2
G023.3891+00.1851	✓	✓	✓	2
G029.8620−00.0444	✓	✓	✓	2
G030.1981−00.1691	✓	✓	✓	2
G034.7569+00.0247	✓	✓	✓	2
G034.8211+00.3519	✓	✓	✓	2
G050.2213−00.6063	✓	✓^*	✓^*	1
G326.6618+00.5207	✓	✓^*	✓	1
G327.1192+00.5103	✓	✓	✓	3
G332.0939−00.4206	✓	✓	✓	3
G332.9636−00.6800	✓	✓	✓	2
G332.9868−00.4871	✓	✓	✓	2
G333.0682−00.4461	✓	✓	✓	3
G338.9196+00.5495	✓	✓	✓	3
G339.6221−00.1209	✓	✓	✓	2
G345.5043+00.3480	✓	✓	✓	2
SDC18.816−0.447_1	✓	✓^*	✓^*	1
SDC20.775−0.076_1	✓	✓^*	✓	1
SDC20.775−0.076_3.0	✓	✓	✓	2
SDC20.775−0.076_3.1	✓	✓	✓	2
SDC22.985−0.412_1	✓	✓	✓	3
SDC23.21−0.371_1	✓	✓	✓	3
SDC24.381−0.21_3⁺	✓^*	✓^*	✓	…
SDC24.462+0.219_2^a	***	✓	✓	P2 (91%)^†
SDC25.426−0.175_6	✓	✓	✓	2
SDC28.147−0.006_1^a	***	✓	✓	P2 (91%)^†
SDC28.277−0.352_1	✓	✓	✓	2
SDC29.844−0.009_4^a	***	✓	✓	P2 (91%)^†
SDC30.172−0.157_2.0	✓	✓^*	✓^*	1
SDC30.172−0.157_2.1⁺	…	…	…	…
SDC33.107−0.065_2	✓	✓	✓	2
SDC35.063−0.726_1^a	***	✓	✓	P3 (53%)^†
SDC37.846−0.392_1^a	✓^*	✓^*	✓	P1 (61%)^†
SDC42.401−0.309_2	✓	✓	✓	2
SDC43.186−0.549_2.1^a	***	✓	✓	P2 (87%)^†
SDC43.186−0.549_2.2	✓	✓	✓	1
SDC43.311−0.21_1	✓	✓	✓	2
SDC43.877−0.755_1	✓	✓	✓	2
SDC45.787−0.335_1	✓	✓	✓	2
SDC45.927−0.375_2.0^a	***	✓	✓	P1 (65%)^†
SDC45.927−0.375_2.1^a	…	…	…	P1 (61%)^†
SDC45.927−0.375_2.2^a	***	…	…	P1 (65%)^†

Notes. All parameters are taken from Frimpong (2021). Columns: (1) name of the sources. (2), (3), and (4) parameters (temperature and column density) of CH₃OH, CH₃CN, and CH₃CCH, respectively, measured by Frimpong (2021). (5) Unsupervised classification groups obtained from the LLE+GMM method. The values of the parameters are detailed in Table 3.2 of Frimpong (2021) and Frimpong et al. (2024).

^(*) Sources with assumed molecular temperatures. The column densities are upper limits.

^(***) Spectra with two components of CH₃OH in emission.

⁽⁺⁾ Spectrum not considered for PCA due to a lack of CH₃OH, CH₃CN, and CH₃CCH emission.

^(a) Spectrum not considered in the LLE and GMM analysis due to the lack of physical and chemical parameters of the COMs studied here.

^(†) Supervised classification predicted by the RF plus PCA analysis. P1, P2, and P3 correspond to groups 1, 2, and 3. The prediction probability is shown in parentheses.

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