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A post-perihelion constraint on the CO2/H2O ratio of interstellar comet 3I/ATLAS from [O I] forbidden lines
Yoshiharu Shinnaka, Ko Tsujimoto, Hideyo Kawakita, 2026. arXiv.
Subaru/HDS 2026-01-07 at 2.87 au: G/R=0.339+/-0.027 (2I-like); CO2/H2O much lower than inbound JWST value; ratio fell across perihelion.
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3I/ATLAS
MYSThe mystery article
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Shinnaka, Y., Tsujimoto, K., & Kawakita, H. (2026). A post-perihelion constraint on the CO2/H2O ratio of interstellar comet 3I/ATLAS from [O I] forbidden lines. arXiv. https://arxiv.org/abs/2603.25002
@article{shinnaka2026postperihelion,
author = {Shinnaka, Yoshiharu and Tsujimoto, Ko and Kawakita, Hideyo},
title = {A post-perihelion constraint on the CO2/H2O ratio of interstellar comet 3I/ATLAS from [O I] forbidden lines},
journal = {arXiv},
year = {2026},
url = {https://arxiv.org/abs/2603.25002}
}TY - GEN TI - A post-perihelion constraint on the CO2/H2O ratio of interstellar comet 3I/ATLAS from [O I] forbidden lines AU - Shinnaka, Yoshiharu AU - Tsujimoto, Ko AU - Kawakita, Hideyo PY - 2026 JO - arXiv UR - https://arxiv.org/abs/2603.25002 ER -
Shinnaka, Yoshiharu et al.. “A post-perihelion constraint on the CO2/H2O ratio of interstellar comet 3I/ATLAS from [O I] forbidden lines.” arXiv (2026).