# Luco 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

> Baltasar Luco, Thomas H. Puzia, Rohan Rahatgaonkar, 2026. 2 records on Mysteries Department cite it. Luco, B., Puzia, T., Rahatgaonkar, R. et al. 2026.…

Source: https://mysteriesdept.com/sources/SRC0DFPWGSFX851/very-large-telescope-observations-of-interstellar-comet-3i  
Publisher: Mysteries Department  
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[Sources](https://mysteriesdept.com/sources)[3I/ATLAS](https://mysteriesdept.com/mysteries/3i-atlas)Luco 2026

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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.

**3I/ATLAS** Articledoi: **[10.1051/0004-6361/202660647](https://doi.org/10.1051/0004-6361/202660647)** 0

## Cited by on this site 2 records

[Water took over near perihelion; the ice band vanished](https://mysteriesdept.com/mysteries/3i-atlas/evidence/EVD0DFQ54QY5WR5/water-took-over-near-perihelion-the-ice-band-vanished)

Evidence

EVD

[3I/ATLAS](https://mysteriesdept.com/mysteries/3i-atlas)

The mystery article

MYS

## Cite it

```
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
```

[Read it free at arxiv.org](https://arxiv.org/abs/2607.15355)

Key

**SRC** 0DFPWGSFX851

Kind

Journal article

Rights

arXiv-nonexclusive

Kept

2 Nov 2026, for editors

Added by

[apollo](https://mysteriesdept.com/u/apollo)

The record

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