Magnetized winds and their influence in the escaping upper atmosphere of HD 209458b
- Autores
- Villarreal D'angelo, Carolina Susana; Esquivel Salazar, José Alejandro; Schneiter, Ernesto Matías; Sgró, Mario Agustín
- Año de publicación
- 2018
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Lyman a observations during an exoplanet transit have proved to be very useful to study the interaction between the stellar wind and the planetary atmosphere. They have been extensively used to constrain planetary system parameters that are not directly observed, such as the planetary mass-loss rate. In this way, Ly α observations can be a powerful tool to infer the existence of a planetarymagnetic field, since it is expected that the latterwill affect the escaping planetary material. To explore the effect that magnetic fields have on the Ly α absorption of HD 209458b, we run a set of 3D MHD simulations including dipolar magnetic fields for the planet and the star. We assume values for the surface magnetic field at the poles of the planet in the range of [0-5] G, and from 1 to 5 G at the poles of the star. Our models also include collisional and photo-ionization, radiative recombination, and an approximation for the radiation pressure. Our results show that the magnetic field of the planet and the star change the shape of the Ly α absorption profile, since it controls the extent of the planetary magnetosphere and the amount of neutralmaterial inside it. Themodel that best reproduces the absorption observed in HD 209458b (with canonical values for the stellar wind parameters) corresponds to a dipole planetary field of ≲ 1 G at the poles.
Fil: Villarreal D'angelo, Carolina Susana. University of St. Andrews; Reino Unido
Fil: Esquivel Salazar, José Alejandro. Universidad Nacional Autónoma de México. Instituto de Ciencias Nucleares; México
Fil: Schneiter, Ernesto Matías. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
Fil: Sgró, Mario Agustín. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina - Materia
-
MHD-METHODS: NUMERICAL
PLANET-STAR INTERACTIONS
PLANETS AND SATELLITES: GENERAL
PLANETS AND SATELLITES: INDIVIDUAL: HD 209458B
STARS: WINDS, OUTFLOWS - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/86936
Ver los metadatos del registro completo
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spelling |
Magnetized winds and their influence in the escaping upper atmosphere of HD 209458bVillarreal D'angelo, Carolina SusanaEsquivel Salazar, José AlejandroSchneiter, Ernesto MatíasSgró, Mario AgustínMHD-METHODS: NUMERICALPLANET-STAR INTERACTIONSPLANETS AND SATELLITES: GENERALPLANETS AND SATELLITES: INDIVIDUAL: HD 209458BSTARS: WINDS, OUTFLOWShttps://purl.org/becyt/ford/1.7https://purl.org/becyt/ford/1https://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Lyman a observations during an exoplanet transit have proved to be very useful to study the interaction between the stellar wind and the planetary atmosphere. They have been extensively used to constrain planetary system parameters that are not directly observed, such as the planetary mass-loss rate. In this way, Ly α observations can be a powerful tool to infer the existence of a planetarymagnetic field, since it is expected that the latterwill affect the escaping planetary material. To explore the effect that magnetic fields have on the Ly α absorption of HD 209458b, we run a set of 3D MHD simulations including dipolar magnetic fields for the planet and the star. We assume values for the surface magnetic field at the poles of the planet in the range of [0-5] G, and from 1 to 5 G at the poles of the star. Our models also include collisional and photo-ionization, radiative recombination, and an approximation for the radiation pressure. Our results show that the magnetic field of the planet and the star change the shape of the Ly α absorption profile, since it controls the extent of the planetary magnetosphere and the amount of neutralmaterial inside it. Themodel that best reproduces the absorption observed in HD 209458b (with canonical values for the stellar wind parameters) corresponds to a dipole planetary field of ≲ 1 G at the poles.Fil: Villarreal D'angelo, Carolina Susana. University of St. Andrews; Reino UnidoFil: Esquivel Salazar, José Alejandro. Universidad Nacional Autónoma de México. Instituto de Ciencias Nucleares; MéxicoFil: Schneiter, Ernesto Matías. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; ArgentinaFil: Sgró, Mario Agustín. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; ArgentinaWiley Blackwell Publishing, Inc2018-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/86936Villarreal D'angelo, Carolina Susana; Esquivel Salazar, José Alejandro; Schneiter, Ernesto Matías; Sgró, Mario Agustín; Magnetized winds and their influence in the escaping upper atmosphere of HD 209458b; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 479; 3; 9-2018; 3115-31250035-87111365-2966CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/479/3/3115/5035846info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/sty1544info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:59:58Zoai:ri.conicet.gov.ar:11336/86936instacron: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:34982025-09-29 09:59:58.606CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Magnetized winds and their influence in the escaping upper atmosphere of HD 209458b |
title |
Magnetized winds and their influence in the escaping upper atmosphere of HD 209458b |
spellingShingle |
Magnetized winds and their influence in the escaping upper atmosphere of HD 209458b Villarreal D'angelo, Carolina Susana MHD-METHODS: NUMERICAL PLANET-STAR INTERACTIONS PLANETS AND SATELLITES: GENERAL PLANETS AND SATELLITES: INDIVIDUAL: HD 209458B STARS: WINDS, OUTFLOWS |
title_short |
Magnetized winds and their influence in the escaping upper atmosphere of HD 209458b |
title_full |
Magnetized winds and their influence in the escaping upper atmosphere of HD 209458b |
title_fullStr |
Magnetized winds and their influence in the escaping upper atmosphere of HD 209458b |
title_full_unstemmed |
Magnetized winds and their influence in the escaping upper atmosphere of HD 209458b |
title_sort |
Magnetized winds and their influence in the escaping upper atmosphere of HD 209458b |
dc.creator.none.fl_str_mv |
Villarreal D'angelo, Carolina Susana Esquivel Salazar, José Alejandro Schneiter, Ernesto Matías Sgró, Mario Agustín |
author |
Villarreal D'angelo, Carolina Susana |
author_facet |
Villarreal D'angelo, Carolina Susana Esquivel Salazar, José Alejandro Schneiter, Ernesto Matías Sgró, Mario Agustín |
author_role |
author |
author2 |
Esquivel Salazar, José Alejandro Schneiter, Ernesto Matías Sgró, Mario Agustín |
author2_role |
author author author |
dc.subject.none.fl_str_mv |
MHD-METHODS: NUMERICAL PLANET-STAR INTERACTIONS PLANETS AND SATELLITES: GENERAL PLANETS AND SATELLITES: INDIVIDUAL: HD 209458B STARS: WINDS, OUTFLOWS |
topic |
MHD-METHODS: NUMERICAL PLANET-STAR INTERACTIONS PLANETS AND SATELLITES: GENERAL PLANETS AND SATELLITES: INDIVIDUAL: HD 209458B STARS: WINDS, OUTFLOWS |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.7 https://purl.org/becyt/ford/1 https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Lyman a observations during an exoplanet transit have proved to be very useful to study the interaction between the stellar wind and the planetary atmosphere. They have been extensively used to constrain planetary system parameters that are not directly observed, such as the planetary mass-loss rate. In this way, Ly α observations can be a powerful tool to infer the existence of a planetarymagnetic field, since it is expected that the latterwill affect the escaping planetary material. To explore the effect that magnetic fields have on the Ly α absorption of HD 209458b, we run a set of 3D MHD simulations including dipolar magnetic fields for the planet and the star. We assume values for the surface magnetic field at the poles of the planet in the range of [0-5] G, and from 1 to 5 G at the poles of the star. Our models also include collisional and photo-ionization, radiative recombination, and an approximation for the radiation pressure. Our results show that the magnetic field of the planet and the star change the shape of the Ly α absorption profile, since it controls the extent of the planetary magnetosphere and the amount of neutralmaterial inside it. Themodel that best reproduces the absorption observed in HD 209458b (with canonical values for the stellar wind parameters) corresponds to a dipole planetary field of ≲ 1 G at the poles. Fil: Villarreal D'angelo, Carolina Susana. University of St. Andrews; Reino Unido Fil: Esquivel Salazar, José Alejandro. Universidad Nacional Autónoma de México. Instituto de Ciencias Nucleares; México Fil: Schneiter, Ernesto Matías. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina Fil: Sgró, Mario Agustín. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina |
description |
Lyman a observations during an exoplanet transit have proved to be very useful to study the interaction between the stellar wind and the planetary atmosphere. They have been extensively used to constrain planetary system parameters that are not directly observed, such as the planetary mass-loss rate. In this way, Ly α observations can be a powerful tool to infer the existence of a planetarymagnetic field, since it is expected that the latterwill affect the escaping planetary material. To explore the effect that magnetic fields have on the Ly α absorption of HD 209458b, we run a set of 3D MHD simulations including dipolar magnetic fields for the planet and the star. We assume values for the surface magnetic field at the poles of the planet in the range of [0-5] G, and from 1 to 5 G at the poles of the star. Our models also include collisional and photo-ionization, radiative recombination, and an approximation for the radiation pressure. Our results show that the magnetic field of the planet and the star change the shape of the Ly α absorption profile, since it controls the extent of the planetary magnetosphere and the amount of neutralmaterial inside it. Themodel that best reproduces the absorption observed in HD 209458b (with canonical values for the stellar wind parameters) corresponds to a dipole planetary field of ≲ 1 G at the poles. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-09 |
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/11336/86936 Villarreal D'angelo, Carolina Susana; Esquivel Salazar, José Alejandro; Schneiter, Ernesto Matías; Sgró, Mario Agustín; Magnetized winds and their influence in the escaping upper atmosphere of HD 209458b; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 479; 3; 9-2018; 3115-3125 0035-8711 1365-2966 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/86936 |
identifier_str_mv |
Villarreal D'angelo, Carolina Susana; Esquivel Salazar, José Alejandro; Schneiter, Ernesto Matías; Sgró, Mario Agustín; Magnetized winds and their influence in the escaping upper atmosphere of HD 209458b; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 479; 3; 9-2018; 3115-3125 0035-8711 1365-2966 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://academic.oup.com/mnras/article/479/3/3115/5035846 info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/sty1544 |
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 application/pdf |
dc.publisher.none.fl_str_mv |
Wiley Blackwell Publishing, Inc |
publisher.none.fl_str_mv |
Wiley Blackwell Publishing, Inc |
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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1844613776329932800 |
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13.070432 |