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20242026
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astro-ph.GA2026

Hierarchical Hub Formation in Mon~R2: Evidence for Cloud-to-core Gas Flows

L. K. Dewangan, O. R. Jadhav, A. K. Maity +2

We present a multi-scale kinematic study of the hub-filament system in Mon R2 using JCMT CO(3--2) and ALMA CO(1--0) observations to investigate how molecular gas conv…

astro-ph.GA2026

ALOHA IRDCs Molecular Line Follow-up: I. Gas properties and kinematics

Jinjin Xie, Yaoting Yan, Zhiyuan Ren +109

Infrared Dark Clouds are ideal sites for investigating the initial conditions of massive star and cluster formation. The A Lei Of the Habitat and Assembly of Infrared Dark Clouds (…

astro-ph.GA2026

Discovery of a Compact Hub-Filament System in G286.21+0.17 with JWST and ALMA: Insights into Protocluster Formation and Competitive Accretion

L. K. Dewangan, N. K. Bhadari, Ram K. Yadav +17

We present a multi-wavelength study of the massive protocluster G286.21+0.17 (G286) using \emph{JWST} near-infrared (NIR) imaging and ALMA HCO(1--0) observations. The…

astro-ph.GA2025

FIRESTORM I: Stellar Feedback and Gas Kinematics in the Evolved W40 Hub-Filament System

Ming-Kang Lim, Ram K. Yadav, L. K. Dewangan +12

The FIRESTORM project--Feedback-Induced Regions and Emission from Star-forming Tracers of ObseRvable Molecular Gas--has targeted four star-forming regions to quantify the impact of…

astro-ph.GA2025

Discovery of a rich population of compact hub-filament systems in a single star-forming complex

L. K. Dewangan, Ram K. Yadav, Saurabh Sharma +4

We report the discovery of 45 compact hub-filament systems (HFSs; median size 2.4 pc) in infrared-dark clouds (IRDCs) in the W33 complex, located at the junction of the Scutu…

astro-ph.GA2025

An S-shaped filament formed due to Cloud-Cloud Collision in molecular cloud G178.28-00.61

Tianwei Zhang, Tie Liu, Yuefang Wu +18

We present compelling observational evidence supporting G178.28-00.61 as an early-stage candidate for Cloud-Cloud Collision (CCC), with indications of the formation of an S-shaped…