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Probing the Ubiquity of Complex Ices in Protostars with JWST: The First Systematic Quantification of Weak Ice Bands between 6.8 and 7.9 μm

  • Authors: Yuan Chen, 缘 陈, Ewine F. van Dishoeck, Katerina Slavicinska, Łukasz Tychoniec, Martijn L. van Gelder, Logan Francis, A. C. Adwin Boogert, Mayank Narang, Charlotte A. F. Schravendijk, Henrik Beuther, Alessio Caratti o Garatti, Eyze K. H. Eenhorst, Caroline Gieser, Thomas Henning, Manuel Güdel, Valentin J. M. Le Gouellec, Melissa K. McClure, Pooneh Nazari, Simon D. Reyes, Mees Tolman, Yao-Lun Yang

Yuan Chen et al 2026 The Astrophysical Journal Letters 1005 .

  • Provider: AAS Journals

Caption: Figure 5.

Two examples of how gas-phase lines interfere with the characterization of absorption bands in the COM ice fingerprint range. L1448-mm (top) and L1448-IRS2B (bottom) show the cases of gas-phase lines presented in emission and in absorption, respectively. In each panel, the original observed spectrum and the manually traced baseline of gas-phase lines are plotted in gray and black, respectively. The regions shaded in blue and orange indicate the modeled rovibrational lines of gas-phase SO2 and CH4, respectively. The absorption features contaminated by gas-phase lines are highlighted as dashed green lines.

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