O. Jadhav

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 $^{13}$ CO(3--2) and ALMA C $^{18}$ O(1--0) observations to investigate how molecular gas conv…

Magnetic Fields in Massive Star-forming Regions (MagMaR). VII. On the dynamical importance of B-fields in massive protocluster W33 A

Fengwei Xu, Q. Zhang, P. Sanhueza +30

Magnetic fields (B-fields) are likely important in massive protocluster formation, but their role remains poorly constrained. We present 1.2 mm ALMA full-polarization observations…

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 H $^{13}$ CO $^{+}$ (1--0) observations. The…

Investigation of Hourglass-shaped Magnetic fields in the G35.20-0.74 Star-Forming Complex

O. R. Jadhav, L. K. Dewangan, A. K. Maity +7

To investigate the role of magnetic fields toward the G35N and G35S sub-regions in the G35.20-0.74 star-forming complex, we utilized multi-wavelength polarimetric observations from…

Unveiling an Hourglass-Shaped Magnetic Field toward IRDC G351.77-0.53

O. R. Jadhav, L. K. Dewangan, I. I. Zinchenko +5

We present the SOFIA/HAWC+ 214 $μ$ m polarimetric observations toward the infrared dark cloud G351.77-0.53 (hereafter G351), complemented by existing multi-wavelength data sets. Inf…

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 $\sim$ 2.4 pc) in infrared-dark clouds (IRDCs) in the W33 complex, located at the junction of the Scutu…

Magnetic Fields in Massive Star-forming Regions (MagMaR). VI. Magnetic Field Dragging in the Filamentary High-mass Star-forming Region G35.20--0.74N due to Gravity

Jihye Hwang, Patricio Sanhueza, Josep Miquel Girart +27

We investigate the magnetic field orientation and strength in the massive star-forming region G35.20-0.74N (G35), using polarized dust emission data obtained with the Atacama Large…

Investigating Embedded Structures and Gas Kinematics in the IRDC Hosting Bubble N59-North

A. K. Maity, L. K. Dewangan, O. R. Jadhav +5

We present a multi-wavelength study of an extended area hosting the bubble N59-North to explore the physical processes driving massive star formation (MSF). The Spitzer 8 $μ$ m imag…

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 $\sim$ 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…

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 $\sim$ 2402 $M…

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}…

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…

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…