SOFIA observations provide the first experimental magnetic-dipole hyperfine constants for [13C II] and refined centroid frequency using astronomical data.
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- method 4), and different dust conditions (Section 6.2.5). 3.1 The IllustrisTNG50 simulation Our emission-line predictions are based onIllustrisTNG50(here- afterTNG50), the highest-resolution volume of the publicly avail- ableIllustrisTNGsuite of cosmological simulations (Pillepich et al. 2018; Nelson et al. 2019a).TNG50was evolved with the moving-mesh codeArepo(Springel 2010) in a(51.7 cMpc) 3 vol- ume from𝑧=127to 0, with dark-matter and gas mass resolu- tions of𝑚 DM =4.5×10 5 M⊙ and𝑚 gas =8×10 4 M⊙, r
- dataset dashed line, which showcases the improvement in the quality of spectra with JWST/MIRI-MRS. The MRS spectra of IR20551 shows a combination of narrow lines,PAHemissionandsilicateabsorptionfeaturesat∼6.2𝜇mand∼9.7𝜇m.Thebottomfourpanelsshowthesamespectraasthetoprightpanel,butzoomed in on four different regions of the MRS spectra and the strong emission line features labelled. Rotational transitions of H2 (S(1)-S(8)) are detected, along with PAH and low-ionisation lines such as [Neii]. High ionisation
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