Molecular clouds at the edge of the Galaxy - I. Variation in the CO J = 2–1/1–0 line ratio

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Table C.1

CO spectral parameters.

Sources	l ○	b ○	d kpc	V_LSR km s⁻¹	ΔV km s⁻¹	T_mb K	I_CO(2−1) K km s⁻¹	I_CO(1−0) K km s⁻¹	R₂₁	Structure	SF Activity
G101.992+3.016	101.992	3.016	9.8	-100.7 ± 0.1	2.4 ± 0.1	2.8 ± 0.3	7.1 ± 0.2	10.4 ± 0.8	0.68 ± 0.06	Moderate	With
G102.092+2.776	102.092	2.776	10.1	-102.7 ± 0.1	2.4 ± 0.1	4.0 ± 0.2	10.1 ± 0.2	8.9 ± 0.6	1.13 ± 0.08	Compact	With
G102.375+2.733	102.375	2.733	10.0	-102.4 ± 0.1	1.2 ± 0.1	7.9 ± 0.1	10.2 ± 0.1	6.2 ± 0.5	1.65 ± 0.14	Compact	With
G103.042+2.475	103.042	2.475	10.5	-106.6 ± 0.1	1.3 ± 0.2	1.0 ±0.1	1.3 ± 0.1	3.3 ± 0.4	0.39 ± 0.06	Moderate	Without
G103.458+3.300	103.458	3.300	10.7	-108.1 ± 0.1	0.7 ± 0.1	2.2 ± 0.2	1.6 ± 0.1	2.8 ± 0.4	0.57 ± 0.09	Moderate	Without
G103.729+2.867	103.729	2.867	9.7	-100.6 ± 0.1	1.8 ± 0.1	5.9 ± 0.4	11.1 ± 0.2	6.1 ± 0.6	1.82 ± 0.19	Compact	With
G104.983+3.317	104.983	3.317	9.9	-102.7 ± 0.1	1.6 ± 0.1	8.0 ± 0.4	13.7 ± 0.2	11.4 ± 0.5	1.20 ± 0.06	Compact	With
G105.242+3.025	105.242	3.025	9.6	-101.0 ± 0.1	1.8 ± 0.1	5.7 ± 0.4	10.7 ± 0.2	7.5 ± 0.4	1.43 ± 0.09	Compact	With
G105.283+3.175	105.283	3.175	10.4	-106.6 ± 0.1	2.2 ± 0.1	6.3 ± 0.2	14.6 ± 0.2	8.1 ± 0.6	1.80 ± 0.14	Compact	With
G106.417+3.925	106.417	3.925	11.1	-111.6 ± 0.2	2.8 ± 0.3	0.7 ± 0.2	2.2 ± 0.2	3.2 ± 0.5	0.69 ± 0.13	Diffuse	Possible
G107.725+2.933	107.725	2.933	9.7	-102.0 ± 0.1	1.4 ± 0.1	2.8 ± 0.2	4.2 ± 0.2	4.8 ± 0.4	0.88 ± 0.09	Moderate	Without
G107.900+1.908	107.900	1.908	9.7	-103.0 ± 0.1	1.2 ± 0.1	2.5 ± 0.3	3.3 ± 0.2	4.5 ± 0.5	0.73 ± 0.10	Moderate	Without
G109.200+2.283	109.200	2.283	9.8	-103.1 ± 0.1	0.9 ± 0.1	4.7 ± 0.1	4.4 ± 0.1	3.4 ± 0.3	1.29 ± 0.12	Compact	Without
G109.292+2.083	109.292	2.083	9.5	-101.0 ± 0.1	2.3 ± 0.1	5.8 ± 0.4	14.4 ± 0.2	11.5 ± 0.5	1.25 ± 0.06	Compact	With
G109.375+2.642	109.375	2.642	9.2	-98.6 ± 0.1	1.3 ± 0.1	3.7 ± 0.1	5.0 ± 0.2	5.9 ± 0.5	0.85 ± 0.08	Moderate	With
G109.500+2.608	109.500	2.608	9.3	-99.7 ± 0.1	1.5 ± 0.1	3.3 ± 0.2	5.2 ± 0.2	7.4 ± 0.4	0.70 ± 0.05	Moderate	Possible
G109.642+2.700	109.642	2.700	9.2	-98.9 ± 0.1	1.6 ± 0.1	4.5 ± 0.3	7.7 ± 0.2	9.1 ± 0.5	0.85 ± 0.06	Moderate	Possible
G109.790+2.717	109.790	2.717	9.2	-99.2 ± 0.1	1.9 ± 0.1	6.4 ± 0.7	13.1 ± 0.2	10.3 ± 0.5	1.27 ± 0.07	Compact	Possible
G110.025+3.083	110.025	3.083	9.1	-98.0 ± 0.1	1.0 ± 0.1	1.7 ±0.2	1.7 ± 0.2	2.9 ± 0.3	0.59 ± 0.10	Moderate	Without
G110.167+2.783	110.167	2.783	9.1	-98.2 ± 0.1	1.2 ± 0.1	2.3 ± 0.4	2.9 ± 0.2	3.3 ± 0.4	0.88 ± 0.13	Moderate	Possible
G114.342+0.781	114.342	0.781	9.5	-100.7 ± 0.1	2.1 ± 0.1	8.1 ± 0.2	18.6 ± 0.2	18.0 ± 0.4	1.03 ± 0.03	Compact	With
G115.992+1.250	115.992	1.250	11.9	-115.8 ± 0.1	1.0 ± 0.1	2.3 ± 0.1	2.5 ± 0.2	2.6 ± 0.4	0.96 ± 0.17	Moderate	Without
G116.725+3.542	116.725	3.542	10.5	-107.8 ± 0.1	1.9 ± 0.1	7.4 ± 0.4	15.2 ± 0.2	11.3 ± 0.5	1.35 ± 0.07	Compact	With
G117.367+1.700	117.367	1.700	13.0	-121.0 ± 0.1	2.4 ± 0.2	1.1 ±0.2	2.9 ± 0.2	5.1 ± 0.5	0.57 ± 0.07	Diffuse	Possible
G117.576+3.950	117.576	3.950	10.3	-106.0 ± 0.1	1.6 ± 0.1	12.4 ± 0.4	20.8 ± 0.2	7.7 ± 0.6	2.70 ± 0.22	Compact	With
G118.143+3.417	118.143	3.417	10.4	-106.7 ± 0.1	1.6 ± 0.1	2.0 ± 0.2	3.4 ± 0.2	4.9 ± 0.6	0.69 ± 0.10	Moderate	Without
G120.925+2.758	120.925	2.758	10.1	-103.3 ± 0.1	1.6 ± 0.1	4.4 ± 0.3	7.5 ± 0.2	4.8 ± 0.5	1.56 ± 0.17	Compact	Without
G121.375+2.708	121.375	2.708	10.2	-103.5 ± 0.1	0.9 ± 0.1	1.4 ±0.1	1.3 ± 0.1	2.4 ± 0.4	0.54 ± 0.10	Moderate	Without
G121.675+2.042	121.675	2.042	9.9	-101.4 ± 0.1	2.0 ± 0.2	1.9 ±0.2	4.0 ± 0.2	3.9 ± 0.5	1.03 ± 0.15	Compact	Without
G121.817+3.052	121.817	3.052	10.3	-103.6 ± 0.1	2.6 ± 0.1	7.5 ± 0.3	20.3 ± 0.2	13.7 ± 0.5	1.48 ± 0.06	Compact	With
G121.967+1.842	121.967	1.842	10.1	-102.7 ± 0.1	0.8 ± 0.1	2.4 ± 0.1	2.1 ± 0.2	3.0 ± 0.5	0.70 ± 0.14	Diffuse	With
G122.375+1.775	122.375	1.775	10.1	-102.3 ± 0.1	1.0 ± 0.1	3.0 ± 0.2	3.3 ± 0.2	3.9 ± 0.5	0.85 ± 0.12	Diffuse	Possible
G122.492+2.592	122.492	2.592	10.6	-105.3 ± 0.1	1.4 ± 0.2	1.7 ±0.3	2.5 ± 0.2	3.5 ± 0.4	0.71 ± 0.10	Diffuse	Possible
G122.775+2.522	122.775	2.522	11.0	-107.2 ± 0.1	2.5 ± 0.1	6.7 ± 0.4	17.9 ± 0.2	12.8 ± 0.6	1.40 ± 0.07	Compact	Possible
G123.367+1.659	123.367	1.659	10.4	-103.0 ± 0.1	2.2 ± 0.1	2.0 ± 0.3	4.5 ± 0.2	6.5 ± 0.5	0.69 ± 0.07	Moderate	With
G123.650+2.833	123.650	2.833	10.7	-104.6 ± 0.1	1.3 ± 0.1	1.8 ±0.3	2.5 ± 0.2	3.6 ± 0.4	0.69 ± 0.10	Diffuse	Possible
G123.925+3.158	123.925	3.158	10.8	-105.3 ± 0.1	1.2 ± 0.1	2.2 ± 0.3	2.7 ± 0.2	3.2 ± 0.4	0.84 ± 0.13	Diffuse	Possible
G124.292+3.000	124.292	3.000	11.7	-109.8 ± 0.1	1.6 ± 0.2	1.4 ±0.3	2.4 ± 0.2	3.6 ± 0.5	0.67 ± 0.11	Diffuse	Without
G124.342+3.367	124.342	3.367	10.8	-105.1 ± 0.1	0.9 ± 0.3	1.1 ±0.3	1.1 ±0.2	2.8 ± 0.4	0.39 ± 0.10	Diffuse	Without
G124.525+3.400	124.525	3.400	10.6	-104.0 ± 0.1	0.8 ± 0.1	2.1 ± 0.3	1.8 ± 0.1	2.3 ± 0.3	0.78 ± 0.12	Diffuse	Without
G125.075+2.375	125.075	2.375	11.3	-107.4 ± 0.2	1.9 ± 0.3	0.6 ± 0.2	1.3 ± 0.2	3.9 ± 0.5	0.33 ± 0.07	Diffuse	Possible
G127.150+2.583	127.150	2.583	10.6	-101.7 ± 0.1	1.3 ± 0.1	1.4 ±0.2	1.8 ± 0.2	3.1 ± 0.4	0.58 ± 0.10	Diffuse	Without
G127.875+2.167	127.875	2.167	10.4	-99.5 ± 0.1	1.8 ± 0.2	1.1 ±0.2	2.1 ± 0.2	4.9 ± 0.5	0.43 ± 0.06	Moderate	With
G128.633+2.833	128.633	2.833	11.1	-102.5 ± 0.1	0.9 ± 0.1	1.2 ±0.1	1.2 ± 0.1	2.2 ± 0.3	0.55 ± 0.09	Diffuse	Without
G130.050+2.108	130.050	2.108	11.4	-102.5 ± 0.1	1.0 ± 0.1	2.2 ± 0.3	2.2 ± 0.1	3.4 ± 0.4	0.65 ± 0.09	Diffuse	With
G131.016+1.524	131.016	1.524	11.6	-101.8 ± 0.1	2.0 ± 0.1	2.3 ± 0.2	5.0 ± 0.2	7.2 ± 0.5	0.69 ± 0.06	Moderate	With
G131.157+1.390	131.157	1.390	11.3	-100.7 ± 0.1	2.2 ± 0.1	3.3 ± 0.3	7.8 ± 0.2	8.6 ± 0.5	0.91 ± 0.06	Moderate	With
G131.575+1.300	131.575	1.300	12.4	-104.3 ± 0.1	1.6 ± 0.2	1.9 ±0.2	3.3 ± 0.2	1.6 ±0.4	2.06 ± 0.54	Moderate	Without
G132.792-0.425	132.792	-0.425	11.0	-97.0 ± 0.1	1.9 ± 0.2	1.4 ±0.2	2.9 ± 0.2	3.9 ± 0.6	0.74 ± 0.13	Moderate	Without
G133.817-0.758	133.817	-0.758	10.7	-94.6 ± 0.1	1.3 ± 0.1	6.5 ± 0.4	8.8 ± 0.2	5.4 ± 0.3	1.63 ± 0.10	Compact	With
G133.825-0.017	133.825	-0.017	10.0	-90.9 ± 0.1	0.9 ± 0.2	0.7 ± 0.1	0.6 ± 0.2	1.8 ±0.3	0.33 ± 0.13	Diffuse	Without
G136.859+1.557	136.859	1.557	10.7	-90.9 ± 0.1	1.9 ± 0.2	1.4 ±0.3	2.8 ± 0.2	3.5 ± 0.5	0.80 ± 0.13	Moderate	Without
G137.283-1.150	137.283	-1.150	14.0	-101.6 ± 0.1	1.5 ± 0.1	3.2 ± 0.2	5.0 ± 0.2	6.9 ± 0.6	0.72 ± 0.07	Moderate	Without
G137.517-1.267	137.517	-1.267	13.1	-98.3 ± 0.1	1.3 ± 0.2	1.6 ±0.2	2.2 ± 0.2	3.2 ± 0.5	0.69 ± 0.13	Diffuse	Without
G137.617-1.225	137.617	-1.225	13.2	-98.4 ± 0.1	1.9 ± 0.1	3.4 ± 0.2	6.9 ± 0.2	5.6 ± 0.5	1.23 ± 0.12	Compact	With
G137.759-0.983	137.759	-0.983	14.7	-103.1 ± 0.1	2.9 ± 0.1	6.0 ± 0.7	18.7 ± 0.2	17.6 ± 0.5	1.06 ± 0.04	Compact	With
G137.775-1.067	137.775	-1.067	14.4	-102.0 ± 0.1	2.7 ± 0.1	6.2 ± 0.3	17.5 ± 0.3	12.2 ± 0.5	1.43 ± 0.07	Compact	With
G138.373-0.850	138.373	-0.850	12.3	-94.4 ± 0.1	1.1 ± 0.1	2.7 ± 0.3	3.2 ± 0.2	3.2 ± 0.3	1.00 ± 0.12	Moderate	Without
G139.116-1.475	139.116	-1.475	13.4	-96.8 ± 0.1	1.9 ± 0.1	10.2 ± 0.6	20.4 ± 0.2	6.7 ± 0.6	3.04 ± 0.28	Compact	Without
G139.850+0.368	139.850	0.368	11.4	-89.3 ± 0.1	0.7 ± 0.1	1.6 ±0.1	1.2 ± 0.2	2.9 ± 0.3	0.41 ± 0.09	Diffuse	Without
G140.183+0.258	140.183	0.258	11.4	-88.5 ± 0.1	0.9 ± 0.2	1.1 ±0.2	1.0 ± 0.2	1.8 ±0.3	0.56 ± 0.15	Diffuse	Without
G140.700+0.150	140.700	0.150	11.2	-86.9 ± 0.1	1.4 ± 0.2	1.6 ±0.3	2.5 ± 0.2	2.5 ± 0.5	1.00 ± 0.22	Diffuse	Without
G141.083+0.425	141.083	0.425	10.8	-84.7 ± 0.1	0.9 ± 0.2	1.4 ±0.2	1.3 ± 0.2	2.6 ± 0.5	0.50 ± 0.13	Diffuse	Without
G142.167+0.267	142.167	0.267	11.6	-85.8 ± 0.2	1.2 ± 0.6	0.6 ± 0.1	0.7 ± 0.3	2.3 ± 0.4	0.30 ± 0.15	Diffuse	Without
G142.642+0.317	142.642	0.317	10.5	-81.3 ±0.1	1.7 ± 0.3	0.8 ± 0.2	1.4 ± 0.2	2.0 ± 0.3	0.70 ± 0.15	Diffuse	Possible
G143.325+1.775	143.325	1.775	10.4	-79.9 ± 0.1	1.0 ± 0.1	2.4 ± 0.2	2.5 ± 0.2	3.1 ± 0.4	0.81 ± 0.13	Diffuse	With
G143.533+0.492	143.533	0.492	9.7	-76.5 ± 0.1	1.4 ± 0.1	3.5 ± 0.3	5.2 ± 0.2	6.5 ± 0.5	0.80 ± 0.07	Compact	With
G144.167+0.817	144.167	0.817	9.4	-74.7 ± 0.1	1.7 ± 0.1	3.1 ± 0.3	5.7 ± 0.2	4.6 ± 0.5	1.24 ± 0.15	Compact	Without
G145.208-0.392	145.208	-0.392	9.7	-73.9 ± 0.1	1.7 ± 0.1	9.2 ± 0.7	16.9 ± 0.2	8.8 ± 0.5	1.92 ± 0.12	Compact	Without
G145.808-1.817	145.808	-1.817	11.6	-79.6 ± 0.1	0.8 ± 0.1	1.8 ± 0.1	1.5 ± 0.2	3.6 ± 0.5	0.42 ± 0.09	Diffuse	Without
G145.850-1.717	145.850	-1.717	11.3	-78.7 ± 0.1	1.4 ± 0.2	1.5 ± 0.2	2.4 ± 0.3	4.4 ± 0.5	0.55 ± 0.10	Diffuse	Without
G146.059-1.650	146.059	-1.650	11.0	-77.3 ± 0.1	1.6 ± 0.1	8.9 ± 0.4	15.3 ± 0.2	8.7 ± 0.4	1.76 ± 0.09	Compact	With

Notes. Column 1: source name. Columns 2 and 3: Galactic coordinates. Column 4: heliocentric distance taken from Sun et al. (2015). Columns 5–8: results of Gaussian fits to the CO J=2–1 spectra. Column 9: integrated intensities of the CO J=1–0 spectra taken from Sun et al. (2015). Column 10: the CO J=2–1/1–0 integrated intensity ratio. Column 11: classification for the degree of compactness of molecular clouds. Classification by eye, according to velocity-integrated intensity maps of molecular clouds (see Fig. A.1). Column 12: Galactic edge clouds with or without star-forming (SF) activity, which are determined by WISE-certified young stars according to Sun (2015).

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