# Rahatgaonkar 2025: Very Large Telescope Observations of Interstellar Comet 3I/ATLAS. II. From Quiescence to Glow: Dramatic Rise of Ni I Emission and Incipient CN Outgassing at Large Heliocentric Distances

> Rohan Rahatgaonkar, Juan Pablo Carvajal, Thomas H. Puzia, 2025. 3 records on Mysteries Department cite it. Rahatgaonkar, R., Carvajal, J., Puzia, T. et…

Source: https://mysteriesdept.com/sources/SRC0DFPWGSF1VED/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)Rahatgaonkar 2025

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# Very Large Telescope Observations of Interstellar Comet 3I/ATLAS. II. From Quiescence to Glow: Dramatic Rise of Ni I Emission and Incipient CN Outgassing at Large Heliocentric Distances

Rohan Rahatgaonkar, Juan Pablo Carvajal, Thomas H. Puzia, 2025. _ApJL 995, L34_.

Ni lines with Fe I undetected; on 2025-08-21 (2.85 au) log Q(CN)=24.81+/-0.01, log Q(Ni)=23.30+/-0.07; Q(Ni) ~ r^-7.7; Q(OH)<1.48e26 /s at 3.14 au.

**3I/ATLAS** Articledoi: **[10.3847/2041-8213/ae1cbc](https://doi.org/10.3847/2041-8213/ae1cbc)** 0

## Cited by on this site 3 records

[Nickel from 3.1 au, iron only inside 2.6 au](https://mysteriesdept.com/mysteries/3i-atlas/evidence/EVD0DFQ4JNJ6RZ0/nickel-from-3-1-au-iron-only-inside-2-6-au)

Evidence

EVD

[Nickel vapour without iron at 2.85 au](https://mysteriesdept.com/mysteries/3i-atlas/events/EVT0DFQ70AS5HSP/nickel-vapour-without-iron-at-2-85-au)

EVT

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

The mystery article

MYS

## Cite it

```
Rahatgaonkar, R., Carvajal, J. P., & Puzia, T. H. (2025). Very Large Telescope Observations of Interstellar Comet 3I/ATLAS. II. From Quiescence to Glow: Dramatic Rise of Ni I Emission and Incipient CN Outgassing at Large Heliocentric Distances. ApJL 995, L34. https://doi.org/10.3847/2041-8213/ae1cbc
```

[Read it free at arxiv.org](https://arxiv.org/abs/2508.18382)

Key

**SRC** 0DFPWGSF1VED

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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