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Very Large Telescope observations of interstellar comet 3I/ATLAS III: High-resolution monitoring of CN and forbidden oxygen emission across the perihelion passage with ESPRESSO
Baltasar Luco, Thomas H. Puzia, Rohan Rahatgaonkar, 2026. A&A 713, A251.
ESPRESSO 1.67-2.45 au: CN index b_pre=-4.62; G/R 0.42 to 0.114; CO2/H2O proxy 0.06-1.06; coma becomes H2O-dominated near perihelion; releases CometSpec and data.
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3I/ATLAS
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Luco, B., Puzia, T. H., & Rahatgaonkar, R. (2026). Very Large Telescope observations of interstellar comet 3I/ATLAS III: High-resolution monitoring of CN and forbidden oxygen emission across the perihelion passage with ESPRESSO. A&A 713, A251. https://doi.org/10.1051/0004-6361/202660647
@article{luco2026very,
author = {Luco, Baltasar and Puzia, Thomas H. and Rahatgaonkar, Rohan},
title = {Very Large Telescope observations of interstellar comet 3I/ATLAS III: High-resolution monitoring of CN and forbidden oxygen emission across the perihelion passage with ESPRESSO},
journal = {A\&A 713, A251},
year = {2026},
doi = {10.1051/0004-6361/202660647},
url = {https://arxiv.org/abs/2607.15355}
}TY - JOUR TI - Very Large Telescope observations of interstellar comet 3I/ATLAS III: High-resolution monitoring of CN and forbidden oxygen emission across the perihelion passage with ESPRESSO AU - Luco, Baltasar AU - Puzia, Thomas H. AU - Rahatgaonkar, Rohan PY - 2026 JO - A&A 713, A251 DO - 10.1051/0004-6361/202660647 UR - https://arxiv.org/abs/2607.15355 ER -
Luco, Baltasar et al.. “Very Large Telescope observations of interstellar comet 3I/ATLAS III: High-resolution monitoring of CN and forbidden oxygen emission across the perihelion passage with ESPRESSO.” A&A 713, A251 (2026). https://doi.org/10.1051/0004-6361/202660647.