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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…