Data from Paper JWST Observations of SN 2024ggi I: Interpretation and Model Comparison of the Type II Supernova 2024ggi at 55 days Past Explosion

We present panchromatic 0.4–21 µm observations of the nearby (~7.2
Mpc) Type II supernova 2024ggi, obtained during the plateau phase at
~55 d past explosion. Our dataset includes JWST spectra spanning
1.7–14 µm, MIR imaging at 7.7 and 21 µm, and near-simultaneous
ground-based optical and NIR spectra covering 0.32–1.8 µm. The NIR and
MIR spectral features of SN 2024ggi are dominated by HI emission. We
present line IDs and a toy PHOENIX/1D model that reproduces the
observations well, especially the continuum redward of 0.9 µm We
compare SN 2024ggi to SN 2022acko and SN 2023ixf, two other Type II
supernovae that were also observed by JWST, and highlight key
similarities and differences in their spectral features. No evidence
for a MIR excess or dust is found at these epochs, with the model
matching the observed flux out to 21 µm. We discuss the model's
shortcomings, focusing on the density profile, which suppresses line
blanketing and produces features in the optical that are too
narrow. Our results show the power of panchromatic studies in both
exploring the nature of the SN ejecta and constraining detailed models
of SNe.