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Formation of an O-Star Cluster by Hierarchical Accretion in G20.08-0.14 N
Roberto Galván-Madrid, Eric Keto, Qizhou Zhang +3
Spectral line and continuum observations of the ionized and molecular gas in G20.08-0.14 N explore the dynamics of accretion over a range of spatial scales in this massive star-for…
Discovery of Extremely High Velocity "Molecular Bullets" in the HH 80-81 High-Mass Star-Forming Region
Keping Qiu, Qizhou Zhang
We present Submillimter Array 1.3 mm waveband continuum and molecular line observations of the HH 80-81 high-mass star-forming region. The dust continuum emission reveals two domin…
Rotation and Outflow motions in the very low-mass Class 0 protostellar system HH 211 at subarcsecond resolution
Chin-Fei Lee, Naomi Hirano, Aina Palau +4
HH 211 is a nearby young protostellar system with a highly collimated jet. We have mapped it in 352 GHz continuum, SiO (J=8-7), and HCO+ (J=4-3) emission at up to ~ 0.2" resolution…
Linking pre- and proto-stellar objects in the intermediate-/high-mass star forming region IRAS 05345+3157
F. Fontani, Q. Zhang, P. Caselli +1
To better understand the initial conditions of the high-mass star formation process, it is crucial to study at high-angular resolution the morphology, the kinematics, and eventuall…
Fragmentation at the Earliest Phase of Massive Star Formation
Qizhou Zhang, Yang Wang, Thushara Pillai +1
We present 1.3mm continuum and spectral line images of two massive molecular clumps P1 and P2 in the G28.34+0.06 region with the Submillimeter Array. While the two clumps contain m…
Submillimeter Array Observations of the Molecular Outflow in High-mass Star-forming Region G240.31+0.07
Keping Qiu, Qizhou Zhang, Jingwen Wu +1
We present Submillimeter Array observations toward the 10^{4.7} Lsun star-forming region G240.31+0.07, in the J=2-1 transition of 12CO and 13CO and at 1.3 mm continuum, as well as…