Filamentary accretion flows in high-mass star-forming clouds

TL;DR

This study investigates gas flow dynamics along filamentary structures in high-mass star-forming regions, revealing detailed accretion processes across multiple scales using molecular line data.

Contribution

It provides a quantitative analysis of gas flows from parsec to sub-parsec scales in high-mass star-forming clouds using IRAM 30 m telescope data.

Findings

Identification of filamentary accretion flows in high-mass star-forming regions

Quantitative measurements of gas velocities and surface densities

Insights into the multi-scale gas dynamics in star formation environments

Abstract

We quantify the gas flows from a scale of up to several parsecs down to the sub-parsec scale along filamentary structures in the three high-mass star-forming regions G75.78, IRAS21078+5211 and NGC7538 with data obtained from the IRAM 30 m telescope. The analysis is carried out using the surface density derived from 1.2 mm continuum emission and velocity differences estimated from HCO$^+$ and H$^{13}$CO$^+$ molecular line data.