806 citations · 8k across the 121 of their papers we have counts for
121 papers
Multi-scale physical properties of NGC 6334 as revealed by local relative orientations between magnetic fields, density gradients, velocity gradients, and gravity
Junhao Liu, Qizhou Zhang, Patrick M. Koch +11
We present ALMA dust polarization and molecular line observations toward 4 clumps (I(N), I, IV, and V) in the massive star-forming region NGC 6334. In conjunction with large-scale…
The ALMA Survey of 70 μm Dark High-mass Clumps in Early Stages (ASHES). VI. The core-scale CO-depletion
Giovanni Sabatini, Stefano Bovino, Patricio Sanhueza +11
Studying the physical and chemical properties of cold and dense molecular clouds is crucial for the understanding of how stars form. Under the typical conditions of infrared dark c…
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.…
A massive Keplerian protostellar disk with flyby-induced spirals in the Central Molecular Zone
Xing Lu, Guang-Xing Li, Qizhou Zhang +1
Accretion disks are an essential component in the paradigm of the formation of low-mass stars. Recent observations further identify disks surrounding low-mass pre-main-sequence sta…
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…
Magnetically regulated collapse in the B335 protostar? II. Observational constraints on gas ionization and magnetic field coupling
Victoria Cabedo, Anaelle Maury, Josep Miquel Girart +4
Non-ideal magnetohydrodynamic effects that rule the coupling of the magnetic field to the circumstellar gas during the low-mass star formation process depend heavily on the local p…
The DR21(OH) Trident -- Resolving the Massive Ridge into Three Entangled Fibers As the Initial Condition of Cluster Formation
Yue Cao, Keping Qiu, Qizhou Zhang +1
DR21(OH) ridge, the central part of a high-mass star and cluster forming hub-filament system, is resolved spatially and kinematically into three nearly parallel fibers (f1, f2, and…
Magnetic fields in star formation: a complete compilation of all the DCF estimations
Junhao Liu, Keping Qiu, Qizhou Zhang
The Davis-Chandrasekhar-Fermi (DCF) method provides an indirect way to estimate the magnetic field strength from statistics of magnetic field orientations. We compile all the previ…
The ALMA Survey of 70 m Dark High-mass Clumps in Early Stages (ASHES). V. Deuterated Molecules in the 70 m dark IRDC G14.492-00.139
Takeshi Sakai, Patricio Sanhueza, Kenji Furuya +14
We have observed the 70 m dark infrared dark cloud (IRDC) G14.492-00.139 in the ND =3--2, DCO =3--2, DCN =3--2, and CO =2--1 lines, using the Atac…
ALMA observations of NGC 6334S. II. Subsonic and Transonic Narrow Filaments in a High-mass Star Formation Cloud
Shanghuo Li, Patricio Sanhueza, Chang Won Lee +22
We present a study of narrow filaments toward a massive infrared dark cloud, NGC 6334S, using the Atacama Large Millimeter/submillimeter Array (ALMA). Thirteen gas filaments are id…
ATOMS: ALMA Three-millimeter Observations of Massive Star-forming regions -- V. Hierarchical fragmentation and gas dynamics in IRDC G034.43+00.24
Hong-Li Liu, Anandmayee Tej, Tie Liu +35
We present new 3-mm continuum and molecular lines observations from the ATOMS survey towards the massive protostellar clump, MM1, located in the filamentary infrared dark cloud (IR…
Magnetic Fields in Massive Star-Forming Regions (MagMaR) II. Tomography Through Dust and Molecular Line Polarization in NGC 6334I(N)
Paulo C. Cortes, Patricio Sanhueza, Martin Houde +13
Here, we report ALMA detections of polarized emission from dust, CS(), and CS() toward the high-mass star-forming region NGC6334I(N). A…
The ALMA Survey of 70 m Dark High-mass Clumps in Early Stages (ASHES). IV. Star formation signatures in G023.477
Kaho Morii, Patricio Sanhueza, Fumitaka Nakamura +15
With a mass of 1000 and a surface density of 0.5 g cm, G023.477+0.114 also known as IRDC 18310-4 is an infrared dark cloud (IRDC) that has the potentia…
ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP): Detection of extremely high density compact structure of prestellar cores and multiple substructures within
Dipen Sahu, Sheng-Yuan Liu, Tie Liu +38
Prestellar cores are self-gravitating dense and cold structures within molecular clouds where future stars are born. They are expected, at the stage of transitioning to the protost…
Does the magnetic field suppress fragmentation in massive dense cores?
Aina Palau, Qizhou Zhang, Josep M. Girart +15
Theoretical and numerical works indicate that a strong magnetic field should suppress fragmentation in dense cores. However, this has never been tested observationally in a relativ…
Magnetic fields in the early stages of massive star formation as revealed by ALMA
Junhao Liu, Qizhou Zhang, Keping Qiu +5
We present 1.3 mm ALMA dust polarization observations at a resolution of 0.02 pc of three massive molecular clumps, MM1, MM4, and MM9, in the infrared dark cloud G28.34+0.06.…
Filamentary Fragmentation and Accretion in High-Mass Star-Forming Molecular Clouds
Xing Lu, Qizhou Zhang, Hauyu Baobab Liu +7
Filamentary structures are ubiquitous in high-mass star-forming molecular clouds. Their relation with high-mass star formation is still to be understood. Here we report interferome…
The Structure of the Radio Recombination Line Maser Emission in the Envelope of MWC349A
James M. Moran, Qizhou Zhang, Deanna L. Emery
The Submillimeter Array (SMA) has been used to image the emission from radio recombination lines of hydrogen at subarcsecond angular resolution from the young high-mass star MWC349…
First Detection of Equatorial Dark Dust Lane in a Protostellar Disk at Submillimeter Wavelength
Chin-Fei Lee, Zhi-Yun Li, Paul. T. P Ho +3
In the earliest (so-called "Class 0") phase of sunlike (low-mass) star formation, circumstellar disks are expected to form, feeding the protostars. However, such disks are difficul…
A Massive Prestellar Clump Hosting no High-Mass Cores
Patricio Sanhueza, James M. Jackson, Qizhou Zhang +5
The Infrared Dark Cloud (IRDC) G028.23-00.19 hosts a massive (1,500 Msun), cold (12 K), and 3.6-70 um IR dark clump (MM1) that has the potential to form high-mass stars. We observe…
The Molecular Gas Environment in the 20 km s Cloud in the Central Molecular Zone
Xing Lu, Qizhou Zhang, Jens Kauffmann +9
We recently reported a population of protostellar candidates in the 20 km s cloud in the Central Molecular Zone of the Milky Way, traced by HO masers in gravitationally…
Magnetic fields in the massive dense cores of DR21 filament: weakly magnetized cores in a strongly magnetized filament
Tao-Chung Ching, Shih-Ping Lai, Qizhou Zhang +3
We present Submillimeter Array 880 m dust polarization observations of six massive dense cores in the DR21 filament. The dust polarization shows complex magnetic field structure…
The ALMA view of W33A: A Spiral Filament Feeding the Candidate Disc in MM1-Main
L. T. Maud, M. G. Hoare, R. Galván-Madrid +4
We targeted the massive star forming region W33A using the Atacama Large Sub/Millimeter Array (ALMA) in band 6 (230 GHz) and 7 (345 GHz) to search for a sub-1000au disc around the…
Simultaneous low- and high-mass star formation in a massive protocluster: ALMA observations of G11.92-0.61
C. J. Cyganowski, C. L. Brogan, T. R. Hunter +4
We present 1.05 mm ALMA observations of the deeply embedded high-mass protocluster G11.92-0.61, designed to search for low-mass cores within the accretion reservoir of the massive…