Fig. 7
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Comparison of the H I 7-6 Humphreys α line detected in the JWST-MIRI spectrum of the Class I source TMC1A with that seen toward TMC1-W (Tychoniec et al. 2024). A warm water spectrum at T =485 K is also shown (best fit for TMC1-W, van Gelder et al. 2024a) to illustrate that water emission can contribute to the H I 7-6 feature.
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