SiO Emission Reveals Shocks and Star Formation in an Infrared Dark Cloud
Published:Dec 29, 2025 11:20
•1 min read
•ArXiv
Analysis
This paper uses ALMA observations of SiO emission to study the IRDC G035.39-00.33, providing insights into star formation and cloud formation mechanisms. The identification of broad SiO emission associated with outflows pinpoints active star formation sites. The discovery of arc-like SiO structures suggests large-scale shocks may be shaping the cloud's filamentary structure, potentially triggered by interactions with a Supernova Remnant and an HII region. This research contributes to understanding the initial conditions for massive star and cluster formation.
Key Takeaways
- •ALMA observations of SiO emission are used to study the IRDC G035.39-00.33.
- •Broad SiO emission identifies sites of ongoing star formation.
- •Arc-like SiO structures suggest cloud shaping by large-scale shocks.
- •Shocks may be triggered by interactions with a Supernova Remnant and an HII region.
- •The research contributes to understanding the initial conditions for massive star and cluster formation.
Reference
“The presence of these arc-like morphologies suggests that large-scale shocks may have compressed the gas in the surroundings of the G035.39-00.33 cloud, shaping its filamentary structure.”