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High Water D/H Ratio of the Interstellar Object 3I/ATLAS is Consistent with a Low-metallicity Origin

  • Authors: Kenji Furuya, Martin Cordiner, Dominique Bockelée-Morvan, Dennis Bodewits, Colin Orion Chandler, Maria N. Drozdovskaya, Nathan X. Roth, Geronimo Villanueva

Kenji Furuya et al 2026 The Astrophysical Journal Letters 1009 .

  • Provider: AAS Journals

Caption: Figure A1.

The predicted gas-phase atomic H abundance with respect to hydrogen nuclei at AV = AV,crit as a function of Z and ζ/nH. Solid lines and dashed lines represent with (Equation (A4)) and without (Equation (A2)) the atomic H release to the gas phase upon water ice photodissociation. The parameter α is set to 0.95.

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