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June 18, 2026The Open Journal of AstrophysicsOpen Access

The Colors of Ices: Measuring ice column density through photometry

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Authors

AGAdam GinsburgSGSavannah R. GramzeMAMatthew L. N. Ashby

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Overview

Randomized trial demonstrates that photometry reveals ice composition in interstellar clouds, suggesting major carbon freezeout.

Key Points

  • The aim is to quantify interstellar ices using JWST photometry and assess their implications for interstellar chemistry.
  • Used JWST photometry to analyze ice signatures in NIRCam data from Galactic Center clouds.
  • Developed an open-source modeling tool called icemodels for synthetic photometry of ices.
  • Validated findings against NIRSpec spectra from Galactic disk sources.
  • Identified clear signatures of CO, H2O, and potentially complex molecules in Galactic Center clouds.
  • Inferred that >25% of total carbon is in the form of CO ice, exceeding solar-neighborhood levels.
  • Estimated metallicity measurement indicating Z_GC ≳ 2.5 Z⊙.

Cite This Study

Ginsburg et al. (2026) studied this question.

synapsesocial.com/papers/6a338e3f630953a74978ee5ahttps://doi.org/10.33232/001c.163469
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