142 citations · 1.3k across the 44 of their papers we have counts for
44 papers
Multi-band ALMA Polarization Observations of BHB07-11 Reveal Aligned Dust Grains in Complex Spiral Arm Structures
Austen Fourkas, Leslie W. Looney, Zhe-Yu Daniel Lin +8
Polarization-mode observations from the Atacama Large Millimeter/submillimeter Array (ALMA) are powerful tools for studying the dust grain populations in circumstellar disks. Many…
Magnetic Fields in the Pillars of Creation
Adwitiya Sarkar, Leslie W. Looney, Marc W. Pound +7
Due to dust grain alignment with magnetic fields, dust polarization observations of far-infrared emission from cold molecular clouds are often used to trace magnetic fields, allowi…
L1448 IRS3B: Dust Polarization Aligned with Spiral Features, Tracing Gas Flows
Leslie W. Looney, Zhe-Yu Daniel Lin, Zhi-Yun Li +11
Circumstellar disk dust polarization in the (sub)millimeter is, for the most part, not from dust grain alignment with magnetic fields but rather indicative of a combination of dust…
Polarization Substructure in the Spiral-Dominated HH 111 Disk: Evidence for Grain Growth
Chin-Fei Lee, Zhi-Yun Li, Tao-Chung Ching +4
The HH 111 protostellar disk has recently been found to host a pair of spiral arms. Here we report the dust polarization results in the disk as well as the inner envelope around it…
Badminton Birdie-Like Aerodynamic Alignment of Drifting Dust Grains by Subsonic Gaseous Flows in Protoplanetary Disks
Zhe-Yu Daniel Lin, Zhi-Yun Li, Haifeng Yang +4
Recent (sub)millimeter polarization observations of protoplanetary disks reveal toroidally aligned, effectively prolate dust grains large enough (at least ~100 m) to efficiently…
Protoplanetary Disk Polarization at Multiple Wavelengths: Are Dust Populations Diverse?
Rachel E. Harrison, Zhe-Yu Daniel Lin, Leslie W. Looney +4
Millimeter and sub-millimeter observations of continuum linear dust polarization provide insight into dust grain growth in protoplanetary disks, which are the progenitors of planet…
Turbulent vortex with moderate dust settling probed by scattering-induced polarization in the IRS 48 system
Haifeng Yang, Manuel Fernández-López, Zhi-Yun Li +4
We investigate the crescent-shaped dust trap in the transition disk, Oph IRS 48, using well-resolved (sub)millimeter polarimetric observations at ALMA Band 7 (870 m). The dust p…
Aligned Grains and Scattered Light Found in Gaps of Planet-Forming Disk
Ian W. Stephens, Zhe-Yu Daniel Lin, Manuel Fernandez-Lopez +8
Polarized (sub)millimeter emission from dust grains in circumstellar disks was initially thought to be due to grains aligned with the magnetic field. However, higher resolution mul…
Panchromatic (Sub)millimeter Polarization Observations of HL Tau Unveil Aligned Scattering Grains
Zhe-Yu Daniel Lin, Zhi-Yun Li, Ian W. Stephens +14
Polarization is a unique tool to study the properties of dust grains of protoplanetary disks and detail the initial conditions of planet formation. Polarization around HL Tau was p…
UV-Optical Emission of AB Aur b is Consistent with Scattered Stellar Light
Yifan Zhou, Brendan P. Bowler, Haifeng Yang +12
The proposed protoplanet AB Aur b is a spatially concentrated emission source imaged in the mm-wavelength disk gap of the Herbig Ae/Be star AB Aur. Its near-infrared spectrum and a…
Eccentric Dust Ring in the IRS 48 Transition Disk
Haifeng Yang, Manuel Fernandez-Lopez, Zhi-Yun Li +4
Crescent-shaped structures in transition disks hold the key to studying the putative companions to the central stars. The dust dynamics, especially that of different grain sizes, i…
Diagnosing FUor-like Sources: The Parameter Space of Viscously Heated Disks in the Optical and Near-IR
Hanpu Liu, Gregory J. Herczeg, Doug Johnstone +8
FU Ori type objects (FUors) are decades-long outbursts of accretion onto young stars that are strong enough to viscously heat disks so that the disk outshines the central star. We…
(Sub)millimeter Dust Polarization of Protoplanetary Disks from Scattering by Large Millimeter-Sized Irregular Grains
Zhe-Yu Daniel Lin, Zhi-Yun Li, Haifeng Yang +6
The size of dust grains, , is key to the physical and chemical processes in circumstellar disks, but observational constraints of grain size remain challenging. (Sub)millimeter…
Probing Magnetic Fields in Protoplanetary Disk Atmospheres through Polarized Optical/IR Light Scattered by Aligned Grains
Haifeng Yang, Zhi-Yun Li
Magnetic fields play essential roles in protoplanetary disks. Magnetic fields in the disk atmosphere are of particular interest, as they are connected to the wind-launching mechani…
Thermal Emission and Scattering by Aligned Grains: Plane-Parallel Model and Application to Multiwavelength Polarization of the HL Tau Disk
Zhe-Yu Daniel Lin, Zhi-Yun Li, Haifeng Yang +4
Telescopes are now able to resolve dust polarization across circumstellar disks at multiple wavelengths, allowing the study of the polarization spectrum. Most disks show clear evid…
Global Non-ideal Magnetohydrodynamic Simulations of Protoplanetary Disks with Outer Truncation
Haifeng Yang, Xue-Ning Bai
It has recently been established that the evolution of protoplanetary disks is primarily driven by magnetized disk winds, requiring large-scale magnetic flux threading the disks. T…
The Transition of Polarized Dust Thermal Emission from the Protostellar Envelope to the Disk Scale
Ka Ho Lam, Che-Yu Chen, Zhi-Yun Li +4
Polarized dust continuum emission has been observed with ALMA in an increasing number of deeply embedded protostellar systems. It generally shows a sharp transition going from the…
Size limit of superparamagnetic inclusions in dust grains and difficulty of magnetic grain alignment in protoplanetary disks
Haifeng Yang
Alignment of non-spherical grains with magnetic fields is an important problem as it lays the foundation of probing magnetic fields with polarized dust thermal emissions. In this p…
What Produces Dust Polarization in the HH 212 Protostellar Disk at 878 μm: Dust Self-Scattering or Dichroic Extinction?
Chin-Fei Lee, Zhi-Yun Li, Haifeng Yang +3
We report new dust polarization results of a nearly edge-on disk in the HH 212 protostellar system, obtained with ALMA at ~ 0.035" (14 au) resolution in continuum at lambda ~ 878 u…
ALMA CN Zeeman Observations of AS 209: Limits on Magnetic Field Strength and Magnetically Driven Accretion Rate
Rachel E. Harrison, Leslie W. Looney, Ian W. Stephens +7
While magnetic fields likely play an important role in driving the evolution of protoplanetary disks through angular momentum transport, observational evidence of magnetic fields h…
Probing the Temperature Structure of Optically Thick Disks Using Polarized Emission of Aligned Grains
Zhe-Yu Daniel Lin, Zhi-Yun Li, Haifeng Yang +4
Polarized continuum emission from aligned grains in disks around young stellar objects can be used to probe the magnetic field, radiation anisotropy, or drift between dust and gas,…
Validating Scattering-Induced (Sub)millimeter Disk Polarization through the Spectral Index, Wavelength-Dependent Polarization Pattern, and Polarization Spectrum: The Case of HD 163296
Zhe-Yu Daniel Lin, Zhi-Yun Li, Haifeng Yang +3
An increasing number of young circumstellar disks show strikingly ordered (sub)millimeter polarization orientations along the minor axis, which is strong evidence for polarization…
Scattering-Induced Disk Polarization By Millimeter-Sized Grains
Haifeng Yang, Zhi-Yun Li
Spatially resolved (sub)millimeter polarization has been detected by ALMA in an increasing number of disks around young stellar objects. The majority of the observations show polar…
Dust Polarization in Four Protoplanetary Disks at 3 mm: Further Evidence of Multiple Origins
Rachel E. Harrison, Leslie W. Looney, Ian W. Stephens +7
We present polarimetric observations of four Class II protoplanetary disks (DG Tau, Haro 6-13, RY Tau, and MWC 480) taken with the Atacama Large Millimeter/submillimeter Array (ALM…