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The First Empirical Calibration of the Mid-infrared Abundance Diagnostic Ne23 with JWST

  • Authors: Noah S. J. Rogers, Evan D. Skillman, Danielle A. Berg, Karla Z. Arellano-Córdova, Richard W. Pogge, Alessandra Aloisi, Leslie K. Hunt, Anne E. Jaskot, Matilde Mingozzi, Ryan J. Rickards Vaught, Karin M. Sandstrom, O. Grace Telford, Macarena G. del Valle-Espinosa

Noah S. J. Rogers et al 2026 The Astrophysical Journal Letters 1003 .

  • Provider: AAS Journals

Caption: Figure 2.

Extracted rest-frame, 1D MIR spectrum of M33+46−380 (see Figure 1). The top and bottom panels correspond to the band A and C observations, respectively. The measured flux is plotted in black with green shading corresponding to the error spectrum (scaled by a factor of 2 for visibility). Emission lines are denoted with blue dashed lines, and we highlight PAH features in orange. The Huα, [Ne II]λ12.81 μm, and [Ne III]λ15.56 μm emission lines are detected at high S/N, enabling the robust measurement of Ne23 in individual H II regions.

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