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

Millimeter and submillimeter 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 polarization in protoplanetary disks at 870 μm and 3 mm....

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Detalles Bibliográficos
Autores principales: Harrison, Rachel E., Lin, Zhe-Yu Daniel, Looney, Leslie W., Li, Zhi-Yun, Yang, Haifeng, Stephens, Ian W., Fernández López, Manuel
Formato: Articulo
Lenguaje:Inglés
Publicado: 2024
Materias:
Ciencias Astronómicas
Protoplanetary disks
Polarimetry
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/167344
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-167344
record_format dspace
spelling I19-R120-10915-1673442024-06-18T20:07:27Z http://sedici.unlp.edu.ar/handle/10915/167344 Protoplanetary Disk Polarization at Multiple Wavelengths: Are Dust Populations Diverse? Harrison, Rachel E. Lin, Zhe-Yu Daniel Looney, Leslie W. Li, Zhi-Yun Yang, Haifeng Stephens, Ian W. Fernández López, Manuel 2024 2024-06-18T16:21:47Z en Ciencias Astronómicas Protoplanetary disks Polarimetry Millimeter and submillimeter 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 polarization in protoplanetary disks at 870 μm and 3 mm. We find that protoplanetary disks in the same molecular cloud at similar evolutionary stages can exhibit different correlations between observing wavelength and polarization morphology and fraction. We explore possible origins for these differences in polarization, including differences in dust populations and protostar properties. For RY Tau and MWC 480, which are consistent with scattering at both wavelengths, we present models of the scattering polarization from several dust grain size distributions. These models aim to reproduce two features of the observational results for these disks: (1) both disks have an observable degree of polarization at both wavelengths; and (2) the polarization fraction is higher at 3 mm than at 870 μm in the centers of the disks. For both disks, these features can be reproduced by a power-law distribution of spherical dust grains with a maximum radius of 200 μm and high optical depth. In MWC 480, we can also reproduce features (1) and (2) with a model containing large grains (amax = 490 μm) near the disk midplane and small grains (amax = 140 μm) above and below the midplane. Instituto Argentino de Radioastronomía Articulo Articulo http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) application/pdf
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
Protoplanetary disks
Polarimetry
spellingShingle Ciencias Astronómicas
Protoplanetary disks
Polarimetry
Harrison, Rachel E.
Lin, Zhe-Yu Daniel
Looney, Leslie W.
Li, Zhi-Yun
Yang, Haifeng
Stephens, Ian W.
Fernández López, Manuel
Protoplanetary Disk Polarization at Multiple Wavelengths: Are Dust Populations Diverse?
topic_facet Ciencias Astronómicas
Protoplanetary disks
Polarimetry
description Millimeter and submillimeter 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 polarization in protoplanetary disks at 870 μm and 3 mm. We find that protoplanetary disks in the same molecular cloud at similar evolutionary stages can exhibit different correlations between observing wavelength and polarization morphology and fraction. We explore possible origins for these differences in polarization, including differences in dust populations and protostar properties. For RY Tau and MWC 480, which are consistent with scattering at both wavelengths, we present models of the scattering polarization from several dust grain size distributions. These models aim to reproduce two features of the observational results for these disks: (1) both disks have an observable degree of polarization at both wavelengths; and (2) the polarization fraction is higher at 3 mm than at 870 μm in the centers of the disks. For both disks, these features can be reproduced by a power-law distribution of spherical dust grains with a maximum radius of 200 μm and high optical depth. In MWC 480, we can also reproduce features (1) and (2) with a model containing large grains (amax = 490 μm) near the disk midplane and small grains (amax = 140 μm) above and below the midplane.
format Articulo
Articulo
author Harrison, Rachel E.
Lin, Zhe-Yu Daniel
Looney, Leslie W.
Li, Zhi-Yun
Yang, Haifeng
Stephens, Ian W.
Fernández López, Manuel
author_facet Harrison, Rachel E.
Lin, Zhe-Yu Daniel
Looney, Leslie W.
Li, Zhi-Yun
Yang, Haifeng
Stephens, Ian W.
Fernández López, Manuel
author_sort Harrison, Rachel E.
title Protoplanetary Disk Polarization at Multiple Wavelengths: Are Dust Populations Diverse?
title_short Protoplanetary Disk Polarization at Multiple Wavelengths: Are Dust Populations Diverse?
title_full Protoplanetary Disk Polarization at Multiple Wavelengths: Are Dust Populations Diverse?
title_fullStr Protoplanetary Disk Polarization at Multiple Wavelengths: Are Dust Populations Diverse?
title_full_unstemmed Protoplanetary Disk Polarization at Multiple Wavelengths: Are Dust Populations Diverse?
title_sort protoplanetary disk polarization at multiple wavelengths: are dust populations diverse?
publishDate 2024
url http://sedici.unlp.edu.ar/handle/10915/167344
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AT lizhiyun protoplanetarydiskpolarizationatmultiplewavelengthsaredustpopulationsdiverse
AT yanghaifeng protoplanetarydiskpolarizationatmultiplewavelengthsaredustpopulationsdiverse
AT stephensianw protoplanetarydiskpolarizationatmultiplewavelengthsaredustpopulationsdiverse
AT fernandezlopezmanuel protoplanetarydiskpolarizationatmultiplewavelengthsaredustpopulationsdiverse
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