# Magnetized converging flows towards the hot core in the intermediate/high-mass star-forming region NGC 6334 V

## TL;DR

This study uses SMA observations to reveal converging magnetic field patterns and filamentary flows towards a hot core in NGC 6334 V, illustrating gravity-driven gas infall in high-mass star formation.

## Contribution

It provides the first detailed observational evidence of magnetic field convergence and filamentary inflows in a high-mass star-forming region, supported by MHD simulation comparisons.

## Key findings

- Magnetic field shows bimodal converging pattern towards hot core.
- Two filamentary structures at different velocities converge to the hot core.
- Gravity appears to dominate over magnetic field strength in gas infall.

## Abstract

We present Submillimeter Array (SMA) observations at 345 GHz towards the intermediate/high-mass cluster-forming region NGC 6334 V. From the dust emission we spatially resolve three dense condensations, the brightest one presenting the typical chemistry of a hot core. The magnetic field (derived from the dust polarized emission) shows a bimodal converging pattern towards the hot core. The molecular emission traces two filamentary structures at two different velocities, separated by 2 km/s, converging to the hot core and following the magnetic field distribution. We compare the velocity field and the magnetic field derived from the SMA observations with MHD simulations of star-forming regions dominated by gravity. This comparison allows us to show how the gas falls in from the larger-scale extended dense core (~0.1 pc) of NGC 6334 V towards the higher-density hot core region (~0.02 pc) through two distinctive converging flows dragging the magnetic field, whose strength seems to have been overcome by gravity.