Dust polarization in protoplanetary disks: Evidence for multiple mechanisms at work

Harrison, Rachel E.

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https://hdl.handle.net/2142/104407 Copy

Description

Title

Dust polarization in protoplanetary disks: Evidence for multiple mechanisms at work

Author(s)

Harrison, Rachel E.

Contributor(s)

• Momose, Munetake
• Muto, Takayuki
• Kwon, Woojin
• Harris, Robert J.
• Kataoka, Akimasa
• Yang, Haifeng
• Li, Zhi-Yun
• Stephens, Ian
• Looney, Leslie

Issue Date

2019-06-20

Keyword(s)

Astrochemistry and astrobiology in the age of Atacama Large Millimeter/submillimeter Array (ALMA)

Date of Ingest

• 2019-07-15T22:16:52Z
• 2020-01-25T19:31:12Z

Abstract

The surfaces of astronomical dust grains are a crucial site for chemical reactions. Observations of polarized emission from dust grains provide a powerful tool for investigating the sizes and distribution of dust grains in protoplanetary disks. We present ALMA observations of three protostellar disks at 3 mm and 870 $\mu$m: Haro 6-13, RY Tau, and MWC 480. At 870 $\mu$m, all three disks show polarization morphologies consistent with those produced by self-scattering. At 3 mm, Haro 6-13 shows a polarization morphology that may indicate radiative or mechanical alignment of grains, while RY Tau and MWC 480 still show polarization patterns that are consistent with scattering. Additionally, we present models of the polarization patterns different polarization mechanisms would be expected to produce in these disks.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Genre of Resource

Conference Paper / Presentation

Language

eng

Permalink

http://hdl.handle.net/2142/104407

DOI

https://doi.org/10.15278/isms.2019.RG02

Copyright and License Information

Copyright 2019 Rachel E. Harrison

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