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Dust continuum and Polarization from Envelope to Cores in Star Formation: A Case Study in the W51 North region
Ya-Wen Tang, Paul T. P. Ho, Patrick M. Koch +2
We present the first high-angular resolution (up to 0.7", ~5000 AU) polarization and thermal dust continuum images toward the massive star-forming region W51 North. The observation…
The circumstellar disk of AB Aurigae: evidence for envelope accretion at late stages of star formation?
Ya-Wen Tang, Stephane Guilloteau, Vincent Pietu +3
The circumstellar disk of AB Aurigae has garnered strong attention owing to the apparent existence of spirals at a relatively young stage and also the asymmetric disk traced in the…
Observations and Analysis of High-Resolution Magnetic Field Structures in Molecular Clouds
Ya-Wen Tang, Patrick M. Koch, Paul T. P. Ho
Recent high-angular-resolution (up to 0.7") dust polarization observations toward star forming regions are summarized. With the Sub-Millimeter Array, the emission from the dense st…
Quantifying the Significance of the Magnetic Field from Large-Scale Cloud to Collapsing Core: Self-Similarity, Mass-to-Flux Ratio and Star Formation Efficiency
Patrick M. Koch, Ya-Wen Tang, Paul T. P. Ho
Dust polarization observational results are analyzed for the high-mass star formation region W51 from the largest parent cloud ( 2~pc, JCMT) to the large-scale envelope ($\si…
Magnetic Field Strength Maps for Molecular Clouds: A New Method Based on a Polarization - Intensity Gradient Relation
Patrick M. Koch, Ya-Wen Tang, Paul T. P. Ho
Dust polarization orientations in molecular clouds often tend to be close to tangential to the Stokes dust continuum emission contours. The magnetic field and the emission grad…