# A common origin for the circumnuclear disc and the nearby molecular clouds in the Galactic Centre

## TL;DR

This study uses hydrodynamic simulations to suggest that the circumnuclear disc and nearby molecular clouds in the Galactic Centre share a common origin from a tidal disruption event less than 1 million years ago, predicting recent star formation in the +20 km/s cloud.

## Contribution

It provides a novel simulation-based hypothesis linking the origin of the circumnuclear disc and molecular clouds in the Galactic Centre.

## Key findings

- Both structures originated from the same tidal disruption event.
- Recent star formation is expected in the +20 km/s cloud.
- Simulation supports observational evidence of recent star formation.

## Abstract

The origin of the molecular clouds orbiting SgrA* is one of the most debated questions about our Galactic Centre. Here, we present the hydrodynamic simulation of a molecular cloud infalling towards SgrA*, performed with the adaptive-mesh-refinement code RAMSES. Through such simulation, we propose that the circumnuclear disc and the +20 km/s cloud originated from the same tidal disruption episode, occurred less than 1 Myr ago. We also show that recent star formation is to be expected in the +20 km/s cloud, as also suggested by recent observations.