Central molecular zones in galaxies: 12CO-to-13CO ratios, carbon budget, and X factors

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Volume 635 (March 2020)

A&A, 635 (2020) A131

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Table 7.

Line intensity ratios normalized to 22″ aperture^(a).

NGC	f₂₂	Transition ratio			Isotopologue ratio			NGC	f₂₂	Transition ratio			Isotopologue ratio
IC		¹²CO(2–1) = 1			¹²CO/¹³CO			IC		¹²CO(2−1) = 1			¹²CO/¹³CO
		1–0	3–2	4–3	1–0	2–1	3–2			1–0	3–2	4–3	1–0	2–1	3–2
(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)
253	19	0.76	0.63	0.68	12.7	11.7	10.7	4030	19	1.20	0.5	...	6.6	9.9	10.1
278	19	1.07	0.71	0.43	9.0	8.0	8.1	4038	19	0.66	0.75	...	12.8	15.8	13.2
470	...	1.22	0.79	...	15.0	...	15.3	4039	23	1.31	0.69	...	22.0	12.9	14.6
520	29	1.19	0.35	...	14.2	9.5	16.8	4051	23	1.71	1.35	...	18	21	...
613	...	0.94	0.8	...	11.5	11.3	14.6	4102	53	0.83	0.5	...	12.5	12.6	12.7
628	19	1.2	0.6	...	6.3	...	9.7	4254	7	1.08	0.6	...	8.9	9.4	5.0
660	21	1.11	0.68	0.66	14.0	12.4	17.0	4258	26	1.04	0.42	...	15^(1, 2)	...	...
891	7	2.2	0.32	...	7.8	10.9	10.2	4293	61	1.34	0.8	...	11.9	6.5	14.9
908	11	1.62	0.4	...	8.7	6	9.9	4303	14	1.29	0.54	...	18.1	12.2	16.4
972	...	.0.95	0.55	...	11.6	15.7	12.8	4321	12	1.47	0.63	...	10.0	10.7	10.8
Maf2	...	.0.89	0.73	0.63	8.0	13.0	8.5	4414	12	1.37	0.51	...	7.5	8.5	7
1055	10	1.42	0.4	...	7.3	11.4	8.9	4457	31	1.09	0.69	...	15	20	24
1068	5	0.70	0.42	0.65	11.8	15.2	12.8	4527	20	0.85	0.4	...	13.3	17.6	10
1084	16	0.98	0.5	...	13.2	10.0	8.8	4536	39	0.98	1.0	...	18.8	11.0	16.1
1097	12	1.14	0.90	...	10.5	18.9	18.8	4631	12	1.28	0.67	...	15.1	15.3	6.9
1365	...	1.05	0.69	...	11.1	12.2	11.5	4666	14	1.39	0.68	0.29	9.7	10.3	14.5
I342	3	0.93	0.70	0.64	10.2	10.8	7.4	4736	7	0.98	0.63	...	9.9	10.1	14.9
1614	27	1.34	2.21	...	30.0	...	...	4826	18	0.89	0.49	0.65	8.3	7.2	8.4
1792	72	0.94	0.5	...	7.0	8.0	7.5	4945⁽³⁾	0.8	0.65	...	15.7	13.2	9.9
1808	...	0.95	1.03	...	16.5	17.1	12.6	5033	11	1.25	0.57	...	9.1	7.2	11.7
2146	...	1.15	0.89	...	15.0	13.6	8.7	5055	5	1.28	0.5	...	7.5	8.3	8.4
2273	25	1.01	0.65	...	10.5	...	12.2	5135	...	1.64	1.33	...	23	11	22
2415	49	...	...	...	...	20.0	11.2	5194	2	0.89	0.59	0.46	6.7	9.1	8.5
2559	34	0.57	...	...	9.9	22.4	11.5	5236	4	0.90	0.59	0.44	13.6	8.6	10.0
2623	51	0.70	0.73	...	7	...	5	Circ⁽⁴⁾	1.2	0.5	0.3	16	10	...
2903	12	1.34	0.91	...	11.2	12.5	8.6	5713	30	0.80	0.49	...	14.9	11.5	16.3
3034	17	1.04	0.83	0.60	18.4	9.0	10.8	5775	36	1.39	0.58	...	9.1	9.4	...
3044	...	1.12	0.50	...	13.5	...	8.8	6000	36	0.98	0.7	...	13.7	10.1	...
3079	47	1.18	0.5	0.70	15.8	7.9	14.6	6240	100	1.00	1.14	...	29	40	26.5
3175	...	1.25	0.67	...	10.6	14.3	10.8	6764	...	1.33	0.93	...	19	24	...
3227	28	0.60	0.89	...	17.8	16.9	13.5	6946	6	0.95	0.49	0.46	13.7	14.3	10.6
3310	19.	0.90	1.38	...	12.4	15.2	12.0	6951	19	1.27	1.20	...	10.5	7.4	15.2
3504	33	1.08	0.67	...	13.1	13.4	11.3	7331	3	2.4	0.46	...	6^(2, 5)	6.2	5.7
3593	32	1.51	0.4	...	12.4	13.8	9.1	7469	74	1.06	0.79	0.90	17	17	23
3627	6	1.00	0.66	...	13.3	12.1	11.8	7541	21	0.47	0.4	...	8.2	11.5	10.3
3628	13	1.25	0.70	0.55	12.0	9.1	11.9	7552	...	...	...	...	10.8	9.1⁽⁶⁾	11.4
3690	50	1.07	0.62	0.73	23.2	...	20.0	7714	27	0.8	0.5	...	5.5	9.4	...

Notes.

^(a)

See Sect. 5.

References. ⁽¹⁾Cox & Downes (1996); ⁽²⁾Krips et al. (2010); ⁽³⁾Dahlem et al. (1993); ⁽⁴⁾Hitschfeld et al. (2008); ⁽⁵⁾Vila-Vilaro et al. (2015); ⁽⁶⁾Aalto et al. (1995).

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