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JCMT BISTRO survey: Magnetic Fields within the Hub-Filament Structure in IC 5146
Jia-Wei Wang, Shih-Ping Lai, Chakali Eswaraiah +130
We present the 850 m polarization observations toward the IC5146 filamentary cloud taken using the Submillimetre Common-User Bolometer Array 2 (SCUBA-2) and its associated polar…
Physical and Chemical Conditions of the Protostellar Envelope and the Protoplanetary Disk in HL Tau
Chun-Ju Wu, Naomi Hirano, Shigehisa Takakuwa +2
We report our SMA observations of the Class \RN{1}-\RN{2} protostar HL Tau in the CO (2--1), CO (2--1), SO(5--4), and the 1.3 mm dust-continuum emission and o…
The Distinct Evolutionary Nature of two Class 0 Protostars in Serpens Main SMM4
Yusuke Aso, Naomi Hirano, Yuri Aikawa +4
We have observed the submillimeter continuum condensation SMM4 in Serpens Main using the Atacama Large Millimeter/submillimeter Array (ALMA) during its Cycle 3 in 1.3 mm continuum,…
Magnetic fields towards Ophiuchus-B derived from SCUBA-2 polarization measurements
Archana Soam, Kate Pattle, Derek Ward-Thompson +121
We present the results of dust emission polarization measurements of Ophiuchus-B (Oph-B) carried out using the Submillimetre Common-User Bolometer Array 2 (SCUBA-2) camera with its…
A First Look at BISTRO Observations of The Oph-A core
Jungmi Kwon, Yasuo Doi, Motohide Tamura +119
We present 850 m imaging polarimetry data of the Oph-A core taken with the Submillimeter Common-User Bolometer Array-2 (SCUBA-2) and its polarimeter (POL-2), as part of our…
Stellar masses and disk properties of Lupus young stellar objects traced by velocity-aligned stacked ALMA 13CO and C18O spectra
Hsi-Wei Yen, Patrick M. Koch, Carlo F. Manara +2
In recent ALMA surveys, the gas distributions and velocity structures of most of the protoplanetary disks can still not be imaged at high S/N due to the short integration time. In…
Constraint on ion-neutral drift velocity in the Class 0 protostar B335 from ALMA observations
Hsi-Wei Yen, Bo Zhao, Patrick M. Koch +4
Ambipolar diffusion can cause a velocity drift between ions and neutrals. This is one of the non-ideal MHD effects proposed to enable the formation of Keplerian disks with sizes of…
Polarization Properties and Magnetic Field Structures in the High-Mass Star-Forming Region W51 Observed with ALMA
Patrick M. Koch, Ya-Wen Tang, Paul T. P. Ho +3
We present the first ALMA dust polarization observations towards the high-mass star-forming regions W51 e2, e8, and W51 North in Band 6 (230 GHz) with a resolution around 0.26" ($\…
Magnetic Fields from Filaments to Cores
Patrick M. Koch, Ya-Wen Tang, Nicholas L. Chapman +7
How important is the magnetic (B-) field when compared to gravity and turbulence in the star-formation process? Does its importance depend on scale and location? We summarize submm…
Binary energy source of the HH 250 outflow and its circumstellar environment
Fernando Comerón, Bo Reipurth, Hsi-Wei Yen +1
Herbig-Haro flows are signposts of recent major accretion and outflow episodes. We aim to determine the nature and properties of the little-known outflow source HH 250-IRS, which i…