Table 1
FWHM of AIBs and AIB complexes measured from five template spectra extracted from NIRSpec-IFU (first row) and MIRI-MRS (rows 2–6) observations of the Orion Bar.
| AIB complex | H II region | Atomic PDR | DF 1 | DF 2 | DF 3 | ∆ | |
|---|---|---|---|---|---|---|---|
| (µm) (1) | (cm−1) (2) | (3) | (4) | (5) | (6) | (7) | (8) |
| 3.3 | 3030 | 39.3 | 37.4 | 38.1 | 41.2 | 42.4 | 5.5 |
| 5.25 | 1905 | 22.5 | 22.2 | 23.7 | 33.7 | 38.6 | 16.4 |
| 6.2 | 1613 | 34.8 | 33.6 | 33.8 | 37.5 | 41.8 | 8.2 |
| 7.7 | 1299 | 74.2 | 73.3 | 76.9 | 89.6 | 92.1 | 18.8 |
| 11.2 | 893 | 14.3 | 12.2 | 13.3 | 16.3 | 18.1 | 5.9 |
| 12.7 | 787 | 24.5 | 21.9 | 21.9 | 31.6 | 36.1 | 14.2 |
Notes. The FWHM of the 8.6 µm AIB cannot be determined, for the peak intensity of the plateau between the 7.7 µm and 8.6 µm AIBs is greater than half the peak intensity of the 8.6 µm AIB (see the third panel of Fig. 3). Columns: (1) central wavelength of AIB; (2) central wavenumber of AIB; (3)–(7) FWHM (cm−1) of AIB complex from indicated template spectrum; (8) peak-to-peak variation in FWHM (cm−1) observed in the templates (see Fig. 5).
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