Aligned grains and scattered light found in gaps of planet-forming disk

Autores
Stephens, Ian; Lin, Zhe Yu Daniel; Fernandez Lopez, Manuel; Li, Zhi Yun; Looney, Leslie W.; Yang, Haifeng; Harrison, Rachel; Kataoka, Akimasa; Carrasco Gonzalez, Carlos; Okuzumi, Satoshi; Tazaki, Ryo
Año de publicación
2023
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Polarized (sub)millimetre emission from dust grains in circumstellar disks was initially thought to be because of grains aligned with the magnetic field1,2. However, higher-resolution multi-wavelength observations3-5 and improved models6-10 found that this polarization is dominated by self-scattering at shorter wavelengths (for example, 870 µm) and by grains aligned with something other than magnetic fields at longer wavelengths (for example, 3 mm). Nevertheless, the polarization signal is expected to depend on the underlying substructure11-13, and observations until now have been unable to resolve polarization in multiple rings and gaps. HL Tau, a protoplanetary disk located 147.3 ± 0.5 pc away14, is the brightest class I or class II disk at millimetre-submillimetre wavelengths. Here we show deep, high-resolution polarization observations of HL Tau at 870 µm, resolving polarization in both the rings and the gaps. We find that the gaps have polarization angles with a notable azimuthal component and a higher polarization fraction than the rings. Our models show that the disk polarization is due to both scattering and emission from the aligned effectively prolate grains. The intrinsic polarization of aligned dust grains is probably more than 10%, which is much higher than that expected in low-resolution observations (about 1%). Asymmetries and dust features that are not seen in non-polarimetric observations are seen in the polarization observations.
Fil: Stephens, Ian. Worcester State University; Estados Unidos
Fil: Lin, Zhe Yu Daniel. University of Virginia; Estados Unidos
Fil: Fernandez Lopez, Manuel. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; Argentina
Fil: Li, Zhi Yun. University of Virginia; Estados Unidos
Fil: Looney, Leslie W.. University of Illinois. Urbana - Champaign; Estados Unidos
Fil: Yang, Haifeng. Peking University; China
Fil: Harrison, Rachel. Monash University; Australia
Fil: Kataoka, Akimasa. National Astronomical Observatory Of Japan; Japón
Fil: Carrasco Gonzalez, Carlos. Instituto de Radioastronomía y Astrofísica; México
Fil: Okuzumi, Satoshi. Tokyo Institute of Technology; Japón
Fil: Tazaki, Ryo. Universite Grenoble Alpes; Francia
Materia
ALMA
Polarized (sub)millimetre emission
circumstellar disks
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/251910
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/251910
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Aligned grains and scattered light found in gaps of planet-forming diskStephens, IanLin, Zhe Yu DanielFernandez Lopez, ManuelLi, Zhi YunLooney, Leslie W.Yang, HaifengHarrison, RachelKataoka, AkimasaCarrasco Gonzalez, CarlosOkuzumi, SatoshiTazaki, RyoALMAPolarized (sub)millimetre emissioncircumstellar diskshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Polarized (sub)millimetre emission from dust grains in circumstellar disks was initially thought to be because of grains aligned with the magnetic field1,2. However, higher-resolution multi-wavelength observations3-5 and improved models6-10 found that this polarization is dominated by self-scattering at shorter wavelengths (for example, 870 µm) and by grains aligned with something other than magnetic fields at longer wavelengths (for example, 3 mm). Nevertheless, the polarization signal is expected to depend on the underlying substructure11-13, and observations until now have been unable to resolve polarization in multiple rings and gaps. HL Tau, a protoplanetary disk located 147.3 ± 0.5 pc away14, is the brightest class I or class II disk at millimetre-submillimetre wavelengths. Here we show deep, high-resolution polarization observations of HL Tau at 870 µm, resolving polarization in both the rings and the gaps. We find that the gaps have polarization angles with a notable azimuthal component and a higher polarization fraction than the rings. Our models show that the disk polarization is due to both scattering and emission from the aligned effectively prolate grains. The intrinsic polarization of aligned dust grains is probably more than 10%, which is much higher than that expected in low-resolution observations (about 1%). Asymmetries and dust features that are not seen in non-polarimetric observations are seen in the polarization observations.Fil: Stephens, Ian. Worcester State University; Estados UnidosFil: Lin, Zhe Yu Daniel. University of Virginia; Estados UnidosFil: Fernandez Lopez, Manuel. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; ArgentinaFil: Li, Zhi Yun. University of Virginia; Estados UnidosFil: Looney, Leslie W.. University of Illinois. Urbana - Champaign; Estados UnidosFil: Yang, Haifeng. Peking University; ChinaFil: Harrison, Rachel. Monash University; AustraliaFil: Kataoka, Akimasa. National Astronomical Observatory Of Japan; JapónFil: Carrasco Gonzalez, Carlos. Instituto de Radioastronomía y Astrofísica; MéxicoFil: Okuzumi, Satoshi. Tokyo Institute of Technology; JapónFil: Tazaki, Ryo. Universite Grenoble Alpes; FranciaNature Publishing Group2023-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/251910Stephens, Ian; Lin, Zhe Yu Daniel; Fernandez Lopez, Manuel; Li, Zhi Yun; Looney, Leslie W.; et al.; Aligned grains and scattered light found in gaps of planet-forming disk; Nature Publishing Group; Nature; 623; 7988; 11-2023; 705-7080028-0836CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.nature.com/articles/s41586-023-06648-7info:eu-repo/semantics/altIdentifier/doi/10.1038/s41586-023-06648-7info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:02:20Zoai:ri.conicet.gov.ar:11336/251910instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:02:20.788CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Aligned grains and scattered light found in gaps of planet-forming disk
title Aligned grains and scattered light found in gaps of planet-forming disk
spellingShingle Aligned grains and scattered light found in gaps of planet-forming disk
Stephens, Ian
ALMA
Polarized (sub)millimetre emission
circumstellar disks
title_short Aligned grains and scattered light found in gaps of planet-forming disk
title_full Aligned grains and scattered light found in gaps of planet-forming disk
title_fullStr Aligned grains and scattered light found in gaps of planet-forming disk
title_full_unstemmed Aligned grains and scattered light found in gaps of planet-forming disk
title_sort Aligned grains and scattered light found in gaps of planet-forming disk
dc.creator.none.fl_str_mv Stephens, Ian
Lin, Zhe Yu Daniel
Fernandez Lopez, Manuel
Li, Zhi Yun
Looney, Leslie W.
Yang, Haifeng
Harrison, Rachel
Kataoka, Akimasa
Carrasco Gonzalez, Carlos
Okuzumi, Satoshi
Tazaki, Ryo
author Stephens, Ian
author_facet Stephens, Ian
Lin, Zhe Yu Daniel
Fernandez Lopez, Manuel
Li, Zhi Yun
Looney, Leslie W.
Yang, Haifeng
Harrison, Rachel
Kataoka, Akimasa
Carrasco Gonzalez, Carlos
Okuzumi, Satoshi
Tazaki, Ryo
author_role author
author2 Lin, Zhe Yu Daniel
Fernandez Lopez, Manuel
Li, Zhi Yun
Looney, Leslie W.
Yang, Haifeng
Harrison, Rachel
Kataoka, Akimasa
Carrasco Gonzalez, Carlos
Okuzumi, Satoshi
Tazaki, Ryo
author2_role author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv ALMA
Polarized (sub)millimetre emission
circumstellar disks
topic ALMA
Polarized (sub)millimetre emission
circumstellar disks
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Polarized (sub)millimetre emission from dust grains in circumstellar disks was initially thought to be because of grains aligned with the magnetic field1,2. However, higher-resolution multi-wavelength observations3-5 and improved models6-10 found that this polarization is dominated by self-scattering at shorter wavelengths (for example, 870 µm) and by grains aligned with something other than magnetic fields at longer wavelengths (for example, 3 mm). Nevertheless, the polarization signal is expected to depend on the underlying substructure11-13, and observations until now have been unable to resolve polarization in multiple rings and gaps. HL Tau, a protoplanetary disk located 147.3 ± 0.5 pc away14, is the brightest class I or class II disk at millimetre-submillimetre wavelengths. Here we show deep, high-resolution polarization observations of HL Tau at 870 µm, resolving polarization in both the rings and the gaps. We find that the gaps have polarization angles with a notable azimuthal component and a higher polarization fraction than the rings. Our models show that the disk polarization is due to both scattering and emission from the aligned effectively prolate grains. The intrinsic polarization of aligned dust grains is probably more than 10%, which is much higher than that expected in low-resolution observations (about 1%). Asymmetries and dust features that are not seen in non-polarimetric observations are seen in the polarization observations.
Fil: Stephens, Ian. Worcester State University; Estados Unidos
Fil: Lin, Zhe Yu Daniel. University of Virginia; Estados Unidos
Fil: Fernandez Lopez, Manuel. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; Argentina
Fil: Li, Zhi Yun. University of Virginia; Estados Unidos
Fil: Looney, Leslie W.. University of Illinois. Urbana - Champaign; Estados Unidos
Fil: Yang, Haifeng. Peking University; China
Fil: Harrison, Rachel. Monash University; Australia
Fil: Kataoka, Akimasa. National Astronomical Observatory Of Japan; Japón
Fil: Carrasco Gonzalez, Carlos. Instituto de Radioastronomía y Astrofísica; México
Fil: Okuzumi, Satoshi. Tokyo Institute of Technology; Japón
Fil: Tazaki, Ryo. Universite Grenoble Alpes; Francia
description Polarized (sub)millimetre emission from dust grains in circumstellar disks was initially thought to be because of grains aligned with the magnetic field1,2. However, higher-resolution multi-wavelength observations3-5 and improved models6-10 found that this polarization is dominated by self-scattering at shorter wavelengths (for example, 870 µm) and by grains aligned with something other than magnetic fields at longer wavelengths (for example, 3 mm). Nevertheless, the polarization signal is expected to depend on the underlying substructure11-13, and observations until now have been unable to resolve polarization in multiple rings and gaps. HL Tau, a protoplanetary disk located 147.3 ± 0.5 pc away14, is the brightest class I or class II disk at millimetre-submillimetre wavelengths. Here we show deep, high-resolution polarization observations of HL Tau at 870 µm, resolving polarization in both the rings and the gaps. We find that the gaps have polarization angles with a notable azimuthal component and a higher polarization fraction than the rings. Our models show that the disk polarization is due to both scattering and emission from the aligned effectively prolate grains. The intrinsic polarization of aligned dust grains is probably more than 10%, which is much higher than that expected in low-resolution observations (about 1%). Asymmetries and dust features that are not seen in non-polarimetric observations are seen in the polarization observations.
publishDate 2023
dc.date.none.fl_str_mv 2023-11
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/251910
Stephens, Ian; Lin, Zhe Yu Daniel; Fernandez Lopez, Manuel; Li, Zhi Yun; Looney, Leslie W.; et al.; Aligned grains and scattered light found in gaps of planet-forming disk; Nature Publishing Group; Nature; 623; 7988; 11-2023; 705-708
0028-0836
CONICET Digital
CONICET
url http://hdl.handle.net/11336/251910
identifier_str_mv Stephens, Ian; Lin, Zhe Yu Daniel; Fernandez Lopez, Manuel; Li, Zhi Yun; Looney, Leslie W.; et al.; Aligned grains and scattered light found in gaps of planet-forming disk; Nature Publishing Group; Nature; 623; 7988; 11-2023; 705-708
0028-0836
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.nature.com/articles/s41586-023-06648-7
info:eu-repo/semantics/altIdentifier/doi/10.1038/s41586-023-06648-7
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Nature Publishing Group
publisher.none.fl_str_mv Nature Publishing Group
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.982451

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