518 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Indian Institute of Technology GandhinagarIN282 papers
- Tata Institute of Fundamental ResearchIN161 papers
- Centre National de la Recherche ScientifiqueFR100 papers
- Indian Institute of AstrophysicsIN92 papers
- Chinese Academy of SciencesCN71 papers
- Aryabhatta Research Institute of Observational SciencesIN66 papers
- Inter-University Centre for Astronomy and AstrophysicsIN62 papers
- Harish-Chandra Research InstituteIN54 papers
- Indian Institute of Science BangaloreIN54 papers
- Indian Institute of Technology BombayIN54 papers
- Udaipur Solar ObservatoryIN53 papers
- California Institute of TechnologyUS46 papers
24 papers · 2 filters
Search and characterization of remnant radio galaxies in the XMMLSS deep field
Sushant Dutta, Veeresh Singh, C. H. Ishwara Chandra +3
The remnant phase of a radio galaxy is characterized by the cessation of AGN activity resulting in the stoppage of jets supplying plasma to radio lobes. In this paper, we present t…
The mid-infrared molecular inventory towards Orion IRc2
Sarah Nickerson, Naseem Rangwala, Sean W. J. Colgan +8
We present the first high spectral resolution mid-infrared survey in the Orion BN/KL region, covering 7.2 to 28.3 micron. With SOFIA/EXES we target the enigmatic source Orion IRc2.…
Star-forming site RAFGL 5085: Is a perfect candidate of hub-filament system ?
L. K. Dewangan, N. K. Bhadari, A. K. Maity +4
To investigate the star formation process, we present a multi-wavelength study of a massive star-forming site RAFGL 5085, which has been associated with the molecular outflow, HII…
The Outer spiral arm of the Milky Way using Red Clump stars
Namita Uppal, Shashikiran Ganesh, Mathias Schultheis
Aims: Our aim is to provide an observational view of the old Disc structure of the Milky Way galaxy using the distribution of red clump stars. The spiral arms, warp structure, and…
Core orientations and magnetic fields in isolated molecular clouds
Ekta Sharma, Maheswar Gopinathan, Archana Soam +2
Molecular clouds are sites of star formation. Magnetic fields are believed to play an important role in their dynamics and shaping morphology. We aim to study any possible correlat…
Ionized filaments and ongoing physical processes in massive star-forming sites around l = 345.5 degree
L. K. Dewangan, L. E. Pirogov, N. K. Bhadari +1
Numerous research studies on dust and molecular filaments have been conducted in star-forming sites, but only a limited number of studies have focused on ionized filaments. To obse…
Fragmented atomic shell around S187 HII region and its interaction with molecular and ionized gas
Petr Zemlyanukha, Igor I. Zinchenko, Evgeny Dombek +6
The environment of S187, a nearby H II region (1.40.3 kpc), is analyzed. A surrounding shell has been studied in the H I line, molecular lines, and also in infrared and radio…
Astrochemical model to study the abundances of branched carbon-chain molecules in a hot molecular core with realistic binding energies
Satyam Srivastav, Milan Sil, Prasanta Gorai +3
Straight-chain (normal-propyl cyanide, n - C3H7CN) and branched-chain (iso-propyl cyanide, i - C3H7CN) alkyl cyanides are recently identified in the massive star-forming regions (S…
Tracers of Dense Gas in the Outer Galaxy
Sudeshna Patra, Neal J. Evans, Kee-Tae Kim +5
We have mapped HCN and HCO (J = 1 0) line emission toward a sample of seven star-forming regions (with 12 + log[O/H] range from 8.34 to 8.69) in the outer Milky Way (Ga…
Characteristics of remnant radio galaxies detected in the deep radio continuum observations from the SKA pathfinders
Sushant Dutta, Veeresh Singh, C. H. Ishwara Chandra +2
The cessation of AGN activity in radio galaxies leads to a remnant phase during which jets are no longer sustained, but lobes can be detected for a period of time before they fade…
Detection of radio-AGN in dust-obscured galaxies using deep uGMRT radio continuum observations
Abhijit Kayal, Veeresh Singh, C. H. Ishwara Chandra +2
Radio observations being insensitive to the dust-obscuration, have been exploited to unveil the population of Active Galactic Nuclei (AGN) residing in galaxies with large dust cont…
ATOMS: ALMA Three-millimeter Observations of Massive Star-forming regions -- XI. From inflow to infall in hub-filament systems
Jian-Wen Zhou, Tie Liu, Neal J. Evans +37
We investigate the presence of hub-filament systems in a large sample of 146 active proto-clusters, using HCO J=1-0 molecular line data obtained from the ATOMS survey.…
Unraveling the observational signatures of cloud-cloud collision and hub-filament systems in W31
A. K. Maity, L. K. Dewangan, H. Sano +3
To understand the formation process of massive stars, we present a multi-scale and multi-wavelength study of the W31 complex hosting two extended HII regions (i.e., G10.30-0.15 (he…
Optical linear polarization study towards Czernik 3 open cluster at different spatial scales
Namita Uppal, Shashikiran Ganesh, D. Bisht
We present the optical linear polarization observation of stars towards the core of the Czernik 3 cluster in the Sloan i-band. The data were obtained using the EMPOL instrument on…
ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP): Evidence for a Molecular Jet Launched at an Unprecedented Early Phase of Protostellar evolution
Somnath Dutta, Chin-Fei Lee, Naomi Hirano +31
Protostellar outflows and jets play a vital role in star formation as they carry away excess angular momentum from the inner disk surface, allowing the material to be transferred t…
New evidences in IRDC G333.73+0.37: colliding filamentary clouds, hub-filament system, and embedded cores
L. K. Dewangan
To unravel the star formation process, we present a multi-scale and multi-wavelength study of the filamentary infrared dark cloud (IRDC) G333.73+0.37, which hosts previously known…
Simultaneous evidence of edge collapse and hub-filament configurations: A rare case study of a Giant Molecular Filament G45.3+0.1
N. K. Bhadari, L. K. Dewangan, D. K. Ojha +2
We study multiwavelength and multiscale data to investigate the kinematics of molecular gas associated with the star-forming complexes G045.49+00.04 (G45E) and G045.14+00.14 (G45W)…
ATOMS: ALMA Three-millimeter Observations of Massive Star-forming regions -- X. Chemical differentiation among the massive cores in G9.62+0.19
Y. P. Peng, T. Liu, S. -L. Qin +23
Investigating the physical and chemical structures of massive star-forming regions is critical for understanding the formation and the early evolution of massive stars. We performe…
Mid-IR and VUV Spectroscopic Characterisation of Thermally Processed and Electron Irradiated CO2 Astrophysical Ice Analogues
DV Mifsud, Z Kaňuchová, S Ioppolo +19
The astrochemistry of CO2 ice analogues has been a topic of intensive investigation due to the prevalence of CO2 throughout the interstellar medium and the Solar System, as well as…
Understanding the impact of diffusion of CO in the astrochemical models
Kinsuk Acharyya
The mobility of lighter species on the surface of interstellar dust grains plays a crucial role in forming simple through complex molecules. Carbon monoxide is one of the most abun…
ATOMS: ALMA Three-millimeter Observations of Massive Star-forming regions-IX. A pilot study towards IRDC G034.43+00.24 on multi-scale structures and gas kinematics
Hong-Li Liu, Anandmayee Tej, Tie Liu +21
We present a comprehensive study of the gas kinematics associated with density structures at different spatial scales in the filamentary infrared dark cloud, G034.43+00.24 (G34). T…
ATOMS: ALMA Three-millimeter Observations of Massive Star-forming regions -- VIII. A search for hot cores by using CHCN, CHOCHO and CHOH lines
Sheng-Li Qin, Tie Liu, Xunchuan Liu +29
Hot cores characterized by rich lines of complex organic molecules are considered as ideal sites for investigating the physical and chemical environments of massive star formation.…
ATOMS: ALMA Three-millimeter Observations of Massive Star-forming regions -- VII. A catalogue of SiO clumps from ACA observations
Rong Liu, Tie Liu, Gang Chen +28
To understand the nature of SiO emission, we conducted ACA observations of the SiO (2-1) lines toward 146 massive star-forming regions, as part of the ALMA Three-millimeter Observa…
Intra-night optical variability study of a non-jetted narrow-line Seyfert 1 galaxy: SDSS J163401.94+480940.1
Vineet Ojha
SDSS J163401.94480940.2 is a non-jetted radio-loud narrow-line Seyfert 1 (NLSy1) galaxy. Optical monitoring of this object was carried out in two intra-night sessions each $\geq…