A5093713931- Astrophysics and Star Formation Studies
- Astro and Planetary Science
- Stellar, planetary, and galactic studies
- Solar and Space Plasma Dynamics
- Gamma-ray bursts and supernovae
- Black Holes and Theoretical Physics
- Laser-induced spectroscopy and plasma
- Scientific Research and Discoveries
- Astrophysical Phenomena and Observations
- Methane Hydrates and Related Phenomena
- Astronomy and Astrophysical Research
- Bee Products Chemical Analysis
- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- Advanced Combustion Engine Technologies
- Quantum chaos and dynamical systems
Physical Research Laboratory
2024
Indian Institute of Technology Gandhinagar
2024
Abstract Hub-filament systems (HFSs) are potential sites of massive star formation (MSF). To understand the role filaments in MSF and origin HFSs, we conducted a multiscale multiwavelength observational investigation molecular cloud G321.93–0.01. The 13 CO( J = 2–1) data reveal multiple namely, HFS-1, HFS-2, candidate HFS (C-HFS). HFS-1 HFS-2 exhibit significant mass accretion rates ( <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:msub> <mml:mrow> <mml:mover...
Abstract A multiwavelength, multiscale study of the Mon R2 hub–filament system (HFS) reveals a spiral structure, with central hub containing more mass than its filaments. C 18 O(1–0) emission detected by Atacama Large Millimeter/submillimeter Array (ALMA) several accreting filaments connected to molecular ring (size ∼0.18 pc × 0.26 pc). The surrounds infrared (IR) ~0.12 0.16 pc), which is not usually observed. IR encircles IR-quiet regions and population embedded near-IR sources, including...
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 for understanding the mass inflow process in star formation. Using JWST NIRCAM images, a recent study reported protostar G11P1 is candidate HFS (G11P1-HFS; $<0.6$ pc). Utilizing ALMA N_2H^+(1--0) data, we confirm presence G11P1-HFS and dense gas kinematics. We analyzed position-position-velocity (PPV) map...
Abstract We present an observational study of the S284-RE region, a low-metallicity area associated with extended S284 H ii region. A thermally supercritical filament (mass ∼2402 M ⊙ and length ∼8.5 pc) is investigated using Herschel column density map. The Spitzer ratio 4.5 μ m/3.6 m map traces 2 outflows in this filament, where previously reported young stellar objects (YSOs) are spatially distributed. Analysis YSO distribution has revealed three active star-forming clusters (YCl1, YCl2,...
Abstract Massive star-forming regions (MSFRs) are commonly associated with hub-filament systems (HFSs) and sites of cloud–cloud collision (CCC). Recent observational studies some MSFRs suggest a possible connection between CCC the formation HFSs. To understand this connection, we analyzed magnetohydrodynamic simulation data from Inoue et al. This involves spherical turbulent molecular cloud plane-parallel sea dense gas at relative velocity about 10 km s −1 . Following collision, nonuniform...
ABSTRACT To probe the star formation process, we present an observational investigation of Pillar IV and ionized knot HH 216 in Eagle Nebula (M16). is known to host a Class I protostar that drives bipolar outflow. The outflow has produced bow shock, 216, which associated with red-shifted lobe. JWST near- mid-infrared images (resolution ∼0${_{.}^{\prime\prime}}$07–0${_{.}^{\prime\prime}}$7) reveal as single, isolated object (below 1000 au). outer boundary depicted 3.3 $\mu$m Polycyclic...
We present an observational study of the S284-RE region, a low-metallicity area associated with extended S284 HII region. A thermally supercritical filament (mass $\sim$2402 $M_{\odot}$, length $\sim$8.5 pc) is investigated using Herschel column density map. The Spitzer ratio 4.5 $\mu$m/3.6 $\mu$m map traces H$_{2}$ outflows in this filament, where previously reported young stellar objects (YSOs) are spatially distributed. Analysis YSO distribution has revealed three active star-forming...
To probe the star formation process, we present an observational investigation of Pillar IV and ionized knot HH 216 in Eagle Nebula (M16). is known to host a Class I protostar that drives bipolar outflow. The outflow has produced bow shock, 216, which associated with red-shifted lobe. James Webb Space Telescope's near- mid-infrared images (resolution $\sim$0.07 arcsec - 0.7 arcsec) reveal as single, isolated object (below 1000 AU). outer boundary depicted 3.3 $\mu$m Polycyclic aromatic...
Massive star-forming regions (MSFRs) are commonly associated with hub-filament systems (HFSs) and sites of cloud-cloud collision (CCC). Recent observational studies some MSFRs suggest a possible connection between CCC the formation HFSs. To understand this connection, we analyzed magneto-hydrodynamic simulation data from Inoue et al. (2018). This involves spherical turbulent molecular cloud plane-parallel sea dense gas at relative velocity about 10 km/s. Following collision, non-uniform...
Hub-filament systems (HFSs) are potential sites of massive star formation (MSF). To understand the role filaments in MSF and origin HFSs, we conducted a multi-scale multi-wavelength observational investigation molecular cloud G321.93-0.01. The $^{13}$CO($J$ = 2-1) data reveal multiple namely, HFS-1, HFS-2, candidate HFS (C-HFS). HFS-1 HFS-2 exhibit significant mass accretion rates ($\dot{M}_{||}$ $> 10^{-3}$ $M_{\odot}$ yr$^{-1}$) to their hubs (i.e., Hub-1 Hub-2, respectively). is...
A multi-wavelength, multi-scale study of the Mon R2 hub-filament system (HFS) reveals a spiral structure, with central hub containing more mass than its filaments. ALMA C$^{18}$O(1-0) emission several accreting filaments connected to molecular ring (size $\sim$0.18 pc $\times$ 0.26 pc). The surrounds infrared (IR) $\sim$0.12 0.16 pc), which is not usually observed. IR encircles dark regions and population embedded near-IR sources, including massive stars IRS 1 2. HNC(3-2) line data reveal...
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 for understanding the mass inflow process in star formation. Using JWST NIRCAM images, Dewangan et al. 2024, reported protostar G11P1 is a candidate HFS (G11P1-HFS; $<0.6$ pc). Utilizing ALMA N$_{2}$H$^{+}$(1-0) data, we confirm presence G11P1-HFS and study dense gas kinematics. We analyzed...