MICONIC: JWST/MIRI-MRS reveals heavily reprocessed polycyclic aromatic hydrocarbons in the circumnuclear disc of Centaurus A

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Table 4.

Intensity ratios.

PAH ratios	Ch 1A mosaic	Nucleus	Circumnucl. reg.	PAH ring	PAH-def. reg.
6.2/7.7	0.43 ± 0.04	0.12 ± 0.03	0.47 ± 0.04	0.51 ± 0.05	0.67 ± 0.05
6.2/11.3	0.23 ± 0.02	0.052 ± 0.004	0.56 ± 0.04	0.58 ± 0.04	0.74 ± 0.05
7.7/11.3	0.53 ± 0.05	0.47 ± 0.05	1.2 ± 0.1	1.15 ± 0.10	1.095 ± 0.100
11.3/6.2	4.4 ± 0.3	19 ± 1	1.8 ± 0.1	1.7 ± 0.1	1.4 ± 0.1
11.3/7.7	1.9 ± 0.2	2.3 ± 0.2	0.8 ± 0.2	0.9 ± 0.3	0.9 ± 0.3
11.3/12.7	2.0 ± 0.2	0.9 ± 0.1	2.3 ± 0.3	2.4 ± 0.3	3.2 ± 0.4
L_H2/L_PAH 7.7	0.11	0.06	0.13	0.11	0.20

Notes. Same as Table 2. The quoted uncertainties are fully propagated through each ratio. H₂ luminosity (L_H2) is obtained as the sum of H₂ 0–0 S(1), H₂ 0–0 S(2), and H₂ 0–0 S(3) intensities (Tab. 2).

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