activity
20202026
most citedNew insights in the HII region G18.88-0.49: hub-filament system and accreting filaments

37 citations · 162 across the 29 of their papers we have counts for

collaborators

33 papers

astro-ph.GA2026

The ALMA-QUARKS Survey. IV. Core Mass Function and Evolutionary Trends in Core Formation Efficiency and Chemistry

Wenyu Jiao, Tie Liu, Dongting Yang +43

The ALMA-QUARKS (Querying Underlying Mechanisms of Massive Star Formation with ALMA-Resolved Gas Kinematics and Structures) survey targets 139 massive protoclusters selected from t…

astro-ph.GA2026

SCALES. II. The Internal Composition of Giant Star-Forming Clumps at

Boris S. Kalita, Adélaïde Claeyssens, Luis C. Ho +12

Star-forming structures of scale , dubbed 'giant' star-forming clumps, are routinely detected in unlensed surveys of galaxies. Two scenarios are us…

astro-ph.GA2026

SCALES. I. Bridging Lensed Clump - Giant Clump Scales in Lensed Galaxies at

Boris S. Kalita, Adélaïde Claeyssens, Luis C. Ho +12

Dense star-forming regions in galaxies, often termed 'clumps', have been studied across two distinct regimes of telescope resolution, each motivating interpretations in tensi…

astro-ph.GA2026

Hub-filament systems and the growth of massive stars: episodic accretion, clustered environments, and projection effects

Dana Makarova, Dana Alina, Paolo Padoan +4

The processes controlling the early mass growth of future massive stars remain poorly understood, particularly the connection of this growth to star clustering and hub-filament sys…

astro-ph.GA2026

The Milky Way Atlas for Linear Filaments III: Giant filaments and magnetic fields as evidence of a bubbly Galactic disk

Naval K. Bhadari, Ke Wang, Shu-ichiro Inutsuka +1

Linear filamentary structures are fundamental constituents of the interstellar medium and play a central role in star formation. Their relative orientation with respect to the ambi…

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.GA2026

The ALMA-QUARKS Survey: Evidence of an Explosive Molecular Outflow in IRAS 15520--5234

Ariful Hoque, Tapas Baug, Estrella Guzman +25

We present a study of the massive protocluster IRAS 155205234, which displays evidence of an explosive molecular outflow that unleashed a kinetic energy of at least 10 er…

astro-ph.GA2026

Galactic Large-scale Filaments Resident in Asymmetric Environments: Clues from Cross-filament Profiles of Density and Temperature

Keyun Su, Ke Wang, Fengwei Xu +1

Large-scale filaments ubiquitously exist in the Galactic interstellar medium, and their radial profiles offer insights into their formation mechanisms. We present a statistical ana…

astro-ph.GA2025

The ALMA-QUARKS survey: Hot Molecular Cores are a long-standing phenomenon in the evolution of massive protostars

Dezhao Meng, Tie Liu, Jarken Esimbek +34

We present an analysis of the QUARKS survey sample, focusing on protoclusters where Hot Molecular Cores (HMCs, traced by CH3CN(12--11)) and UC HII regions (traced by H30α/H40α) coe…

astro-ph.GA2025★ 4 cited

Evolution of magnetized hub-filament systems: Comparing the observed properties of W3(OH), W3 Main, and S 106

M. S. N. Kumar, D. Arzoumanian, S. Inutsuka +2

In this study, we examine three cluster-forming hub-filament systems (HFS) - W3(OH), W3 Main, and S 106 - spanning evolutionary stages from early to advanced, with a focus on their…

astro-ph.GA2025

The ALMA-ATOMS Survey: Exploring Protostellar Outflows in HCN

Ariful Hoque, Tapas Baug, Lokesh K. Dewangan +25

We present the first systematic study of bipolar outflows using HCN as a tracer in a sample of 146 massive star-forming regions from ALMA-ATOMS survey. Protostellar outflows ar…

astro-ph.GA2025

Unveiling Physical Conditions and Star Formation Processes in the G47 Filamentary Cloud

O. R. Jadhav, L. K. Dewangan, A. Haj Ismail +6

We present a multi-wavelength study of the filamentary cloud G47 (d 4.44 kpc), which hosts the mid-infrared bubbles N98, B1, and B2. The SMGPS 1.3 GHz continuum map detects i…

astro-ph.GA2024★ 7 cited

JWST-ALMA Study of a Hub-Filament System in the Nascent Phase

N. K. Bhadari, L. K. Dewangan, O. R. Jadhav +7

Star clusters, including high-mass stars, form within hub-filament systems (HFSs). Observations of HFSs that remain unaffected by feedback from embedded stars are rare yet crucial…

astro-ph.GA2024

Uncovering the hidden physical structures and protostellar activities in the Low-Metallicity S284-RE region: results from ALMA and JWST

O. R. Jadhav, L. K. Dewangan, Aayushi Verma +4

We present an observational study of the S284-RE region, a low-metallicity area associated with the extended S284 HII region. A thermally supercritical filament (mass 2402 $M…

astro-ph.GA2024

Mon R2: A Hub-Filament System with an Infrared Bubble at the Hub center

L. K. Dewangan, N. K. Bhadari, A. K. Maity +3

A multi-wavelength, multi-scale study of the Mon R2 hub-filament system (HFS) reveals a spiral structure, with the central hub containing more mass than its filaments. ALMA C$^{18}…

astro-ph.GA2024

G321.93-0.01: A Rare Site of Multiple Hub-Filament Systems with Evidence of Collision and Merging of Filaments

A. K. Maity, L. K. Dewangan, N. K. Bhadari +5

Hub-filament systems (HFSs) are potential sites of massive star formation (MSF). To understand the role of filaments in MSF and the origin of HFSs, we conducted a multi-scale and m…

astro-ph.GA2024

Cloud-Cloud Collision: Formation of Hub-Filament Systems and Associated Gas Kinematics; Mass-collecting cone: A new signature of Cloud-Cloud Collision

A. K. Maity, T. Inoue, Y. Fukui +6

Massive star-forming regions (MSFRs) are commonly associated with hub-filament systems (HFSs) and sites of cloud-cloud collision (CCC). Recent observational studies of some MSFRs s…

astro-ph.GA2024

Direct observational evidence of multi-epoch massive star formation in G24.47+0.49

Anindya Saha, Anandmayee Tej, Hong-Li Liu +19

Using new continuum and molecular line data from the ALMA Three-millimeter Observations of Massive Star-forming Regions (ATOMS) survey and archival VLA, 4.86 GHz data, we present d…

astro-ph.GA2024

Deciphering the Hidden Structures of HH 216 and Pillar IV in M16: Results from JWST and HST

L. K. Dewangan, O. R. Jadhav, A. K. Maity +6

To probe the star formation process, we present an observational investigation of the Pillar IV and an ionized knot HH 216 in the Eagle Nebula (M16). Pillar IV is known to host a C…

astro-ph.GA2023

Galactic `Snake' IRDC G11.110.12: a site of multiple hub-filament systems and colliding filamentary clouds

L. K. Dewangan, N. K. Bhadari, A. K. Maity +3

To probe star formation processes, we present a multi-scale and multi-wavelength investigation of the `Snake' nebula/infrared dark cloud G11.110.12 (hereafter, G11; length $\sim…

astro-ph.GA2023

Fragmentation and dynamics of dense gas structures in the proximity of massive young stellar object W42-MME

N. K. Bhadari, L. K. Dewangan, L. E. Pirogov +4

We present an analysis of the dense gas structures in the immediate surroundings of the massive young stellar object (MYSO) W42-MME, using the high-resolution (0.310$''…

astro-ph.GA2023★ 1 cited

New insights in the bubble wall of NGC 3324: intertwined sub-structures and a bipolar morphology uncovered by JWST

L. K. Dewangan, A. K. Maity, Y. D. Mayya +4

We report the discovery of intertwined/entangled sub-structures towards the bubble wall of NGC 3324 below a physical scale of 4500 AU, which is the sharp edge/ionization front/elon…

astro-ph.GA2023★ 14 cited

AFGL 5180 and AFGL 6366S: sites of hub-filament systems at the opposite edges of a filamentary cloud

A. K. Maity, L. K. Dewangan, N. K. Bhadari +3

We present a multi-scale and multi-wavelength study to unveil massive star formation (MSF) processes around sites AFGL 5180, and AFGL 6366S, both hosting a Class II 6.7 GHz methano…

astro-ph.GA2023★ 10 cited

IC 5146 dark Streamer: is a first reliable candidate of edge collapse, hub-filament systems, and intertwined sub-filaments?

L. K. Dewangan, N. K. Bhadari, A. Men'shchikov +5

The paper presents an analysis of multi-wavelength data of a nearby star-forming site IC 5146 dark Streamer (d 600 pc), which has been treated as a single and long filament,…