207 citations · 1.9k across the 118 of their papers we have counts for
20 papers · 1 filter
The ALMA Survey of 70 μm Dark High-mass Clumps in Early Stages (ASHES). X: Hot Gas Reveals Deeply Embedded Star Formation
Natsuko Izumi, Patricio Sanhueza, Patrick M. Koch +10
Massive infrared dark clouds (IRDCs) are considered to host the earliest stages of high-mass star formation. In particular, 70 m dark IRDCs are the colder and more quiescent clo…
Digging into the Interior of Hot Cores with ALMA: Spiral Accretion into the High-mass Protostellar Core G336.01-0.82
Fernando Olguin, Patricio Sanhueza, Huei-Ru Vivien Chen +9
We observed the high-mass star-forming core G336.01-0.82 at 1.3 mm and 0.05'' (~150 au) angular resolution with the Atacama Large Millimeter/submillimeter Array (ALMA) as part of t…
The first Ka-band (26.1-35 GHz) blind line survey towards Orion KL
Xunchuan Liu, Tie Liu, Zhiqiang Shen +30
We conducted a Ka-band (26.1--35 GHz) line survey towards Orion KL using the TianMa 65-m Radio Telescope (TMRT). It is the first blind line survey in the Ka band, and achieves a se…
Tentative detection of cyanoformamide NCCONH2 in space
Juan Li, Donghui Quan, Junzhi Wang +12
The peptide-like molecules, cyanoformamide (NCCONH2), is the cyano (CN) derivative of formamide (NH2CHO). It is known to play a role in the synthesis of nucleic acid precursors und…
The ALMA-QUARKS survey: -- I. Survey description and data reduction
Xunchuan Liu, Tie Liu, Lei Zhu +31
This paper presents an overview of the QUARKS survey, which stands for `Querying Underlying mechanisms of massive star formation with ALMA-Resolved gas Kinematics and Structures'.…
ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP): Discovery of an extremely dense and compact object embedded in the prestellar core G208.68-19.92-N2
Naomi Hirano, Dipen Sahu, Sheng-Yaun Liu +19
The internal structure of the prestellar core G208.68-19.02-N2 (G208-N2) in the Orion Molecular Cloud 3 (OMC-3) region has been studied with the Atacama Large Millimeter/submillime…
A High-Mass Young Star-forming Core Escaping from Its Parental Filament
Zhiyuan Ren, Xi Chen, Tie Liu +17
We studied the unique kinematic properties in massive filament G352.63-1.07 at -AU spatial scale with the dense molecular tracers observed with the Atacama Large Millimeter/s…
The ALMA Survey of Star Formation and Evolution in Massive Protoclusters with Blue Profiles (ASSEMBLE): Core Growth, Cluster Contraction, and Primordial Mass Segregation
Fengwei Xu, Ke Wang, Tie Liu +40
The ALMA Survey of Star Formation and Evolution in Massive Protoclusters with Blue Profiles (ASSEMBLE) aims to investigate the process of mass assembly and its connection to high-m…
ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP): The Warm-Envelope Origin of Hot Corinos
Shih-Ying Hsu, Sheng-Yuan Liu, Doug Johnstone +24
Hot corinos are of great interest due to their richness in interstellar complex organic molecules (COMs) and the consequent potential prebiotic connection to solar-like planetary s…
Episodic Accretion in Protostars -- An ALMA Survey of Molecular Jets in the Orion Molecular Cloud
Somnath Dutta, Chin-Fei Lee, Doug Johnstone +20
Protostellar outflows and jets are almost ubiquitous characteristics during the mass accretion phase, and encode the history of stellar accretion, complex-organic molecule (COM) fo…
Direct observational evidence of the multi-scale, dynamical mass accretion toward a high-mass star forming hub-filament system
Dongting Yang, Hong-Li Liu, Anandmayee Tej +28
There is growing evidence that high-mass star formation and hub-filament systems (HFS) are intricately linked. The gas kinematics along the filaments and the forming high-mass star…
ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP): A forming quadruple system with continuum `ribbons' and intricate outflows
Qiu-yi Luo, Tie Liu, Aaron T. Lee +31
One of the most poorly understood aspects of low-mass star formation is how multiple-star systems are formed. Here we present the results of Atacama Large Millimeter/submillimeter…
The ALMA Survey of 70 m Dark High-mass Clumps in Early Stages (ASHES). IX. Physical Properties and Spatial Distribution of Cores in IRDCs
Kaho Morii, Patricio Sanhueza, Fumitaka Nakamura +13
The initial conditions found in infrared dark clouds (IRDCs) provide insights on how high-mass stars and stellar clusters form. We have conducted high-angular resolution and high-s…
The ALMA Survey of 70 μm Dark High-mass Clumps in Early Stages (ASHES). VIII. Dynamics of Embedded Dense Cores
Shanghuo Li, Patricio Sanhueza, Qizhou Zhang +9
We present the dynamical properties of 294 cores embedded in twelve IRDCs observed as part of the ASHES Survey. Protostellar cores have higher gas masses, surface densities, column…
Digging into the Interior of Hot Cores with ALMA (DIHCA). III: The Chemical Link between NHCHO, HNCO, and HCO
Kotomi Taniguchi, Patricio Sanhueza, Fernando A. Olguin +8
We have analyzed the NHCHO, HNCO, HCO, and CHCN (CHCN) molecular lines at an angular resolution of obtained by the Atacama Large Millime…
Deviation from a Continuous and Universal Turbulence Cascade in NGC 6334 due to Massive Star Formation Activity
Junhao Liu, Qizhou Zhang, Hauyu Baobab Liu +10
We use molecular line data from ALMA, SMA, JCMT, and NANTEN2 to study the multi-scale (15-0.005 pc) velocity statistics in the massive star formation region NGC 6334. We find…
Density Structure of Centrally Concentrated Prestellar Cores from Multi-scale Observations
Dipen Sahu, Sheng-Yuan Liu, Doug Johnstone +23
Starless cores represent the initial stage of evolution toward (proto)star formation, and a subset of them, known as prestellar cores, with high density (~ 10^6 cm^-3 or higher) an…
Evidence of high-mass star formation through multi-scale mass accretion in hub-filament-system clouds
Hong-Li Liu, Anandmayee Tej, Tie Liu +30
We present a statistical study of a sample of 17 hub-filament-system (HFS) clouds of high-mass star formation using high-angular resolution (1-2 arcsecond) ALMA 1.3mm and 3mm…
ATOMS: ALMA Three-millimeter Observations of Massive Star-forming regions -- XV. Steady Accretion from Global Collapse to Core Feeding in Massive Hub-filament System SDC335
Feng-Wei Xu, Ke Wang, Tie Liu +37
We present ALMA Band-3/7 observations towards "the Heart" of a massive hub-filament system (HFS) SDC335, to investigate its fragmentation and accretion. At a resolution of $\sim0.0…
ATOMS: ALMA Three-millimeter Observations of Massive Star-forming regions -XIV. Properties of resolved UC Hii regions
C. Zhang, Feng-Yao Zhu, Tie Liu +15
Hydrogen recombination lines (RRLs) are one of the major diagnostics of the physical properties of H{\sc ii} regions. We use RRL H40, He40 and 3 mm continuum emission to inve…