Výsledky vyhledávání - "Harrison, Rachel E"

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Badminton Birdie-Like Aerodynamic Alignment of Drifting Dust Grains by Subsonic Gaseous Flows in Protoplanetary Disks

Autor: Lin, Zhe-Yu Daniel, Li, Zhi-Yun, Yang, Haifeng, Looney, Leslie W., Stephens, Ian W., Fernández-López, Manuel, Harrison, Rachel E.

Recent (sub)millimeter polarization observations of protoplanetary disks reveal toroidally aligned, effectively prolate dust grains large enough (at least ~100 $\mu$m) to efficiently scatter millimeter light. The alignment mechanism for these grains

Externí odkaz: http://arxiv.org/abs/2407.10025

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Protoplanetary Disk Polarization at Multiple Wavelengths: Are Dust Populations Diverse?

Autor: Harrison, Rachel E., Lin, Zhe-Yu Daniel, Looney, Leslie W., Li, Zhi-Yun, Yang, Haifeng, Stephens, Ian, Fernández-López, Manuel

Millimeter and sub-millimeter observations of continuum linear dust polarization provide insight into dust grain growth in protoplanetary disks, which are the progenitors of planetary systems. We present the results of the first survey of dust polari

Externí odkaz: http://arxiv.org/abs/2404.10217

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Panchromatic (Sub)millimeter Polarization Observations of HL Tau Unveil Aligned Scattering Grains

Autor: Lin, Zhe-Yu Daniel, Li, Zhi-Yun, Stephens, Ian W., Fernández-López, Manuel, Carrasco-González, Carlos, Chandler, Claire J., Pasetto, Alice, Looney, Leslie W., Yang, Haifeng, Harrison, Rachel E., Sadavoy, Sarah I., Henning, Thomas, Hughes, A. Meredith, Kataoka, Akimasa, Kwon, Woojin, Muto, Takayuki, Segura-Cox, Dominique

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 previously imaged using the Atacama Large Millimeter/submillimeter Arra

Externí odkaz: http://arxiv.org/abs/2309.10055

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ALMA CN Zeeman Observations of AS 209: Limits on Magnetic Field Strength and Magnetically Driven Accretion Rate

Autor: Harrison, Rachel E., Looney, Leslie W., Stephens, Ian W., Li, Zhi-Yun, Teague, Richard, Crutcher, Richard M., Yang, Haifeng, Cox, Erin, Fernández-López, Manuel, Shinnaga, Hiroko

While magnetic fields likely play an important role in driving the evolution of protoplanetary disks through angular momentum transport, observational evidence of magnetic fields has only been found in a small number of disks. Although dust continuum

Externí odkaz: http://arxiv.org/abs/2101.01846

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Dust Polarization in Four Protoplanetary Disks at 3 mm: Further Evidence of Multiple Origins

Autor: Harrison, Rachel E., Looney, Leslie W., Stephens, Ian W., Li, Zhi-Yun, Yang, Haifeng, Kataoka, Akimasa, Harris, Robert J., Kwon, Woojin, Muto, Takayuki, Momose, Munetake

Publikováno v: ApJL 877 (2019) L2

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 (ALMA) at 3 mm. The polarization morphologies observed fall into two disti

Externí odkaz: http://arxiv.org/abs/1905.06266

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