University of Illinois Urbana-Champaign

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

Harrison, Rachel E.

Content Files
1460293.pptx
3979.pdf

Permalink

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

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

Owning Collections

Abstracts & Presentations - 2019 International Symposium on Molecular Spectroscopy PRIMARY