{"id":"shinnaka2026postperihelion","URL":"https://arxiv.org/abs/2603.25002","type":"article","title":"A post-perihelion constraint on the CO2/H2O ratio of interstellar comet 3I/ATLAS from [O I] forbidden lines","author":[{"given":"Yoshiharu","family":"Shinnaka"},{"given":"Ko","family":"Tsujimoto"},{"given":"Hideyo","family":"Kawakita"}],"issued":{"date-parts":[[2026]]},"container-title":"arXiv","catalog-key":"SRC0DFPWGSFT997"}