Measuring the vertical response of the Galactic disc to an infalling satellite

Using N-body simulations of the Milky Way interacting with a satellite similar to the Sagittarius dwarf galaxy, we quantitatively analyse the vertical response of the Galactic disc to the satellite's repeated impacts. We approximate the vertical distortion of the Galactic disc as the sum of the...

ver descrição completa

Detalhes bibliográficos
Autores: Poggio, Eloisa, Laporte, Chervin F. P., Johnston, Kathryn V., D'Onghia, Elena, Drimmel, Ronald, Grion Filho, Douglas
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2021
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/260898
Acesso em linha:http://hdl.handle.net/10261/260898
Access Level:acceso abierto
Palavra-chave:Galaxy: disc
Galaxy: evolution
Galaxy: kinematics and dynamics
Galaxy: structure
Local group
id ES_678da1a835ddb8b1d0671faae8ce2a3e
oai_identifier_str oai:digital.csic.es:10261/260898
network_acronym_str ES
network_name_str España
repository_id_str
spelling Measuring the vertical response of the Galactic disc to an infalling satellitePoggio, EloisaLaporte, Chervin F. P.Johnston, Kathryn V.D'Onghia, ElenaDrimmel, RonaldGrion Filho, DouglasGalaxy: discGalaxy: evolutionGalaxy: kinematics and dynamicsGalaxy: structureLocal groupUsing N-body simulations of the Milky Way interacting with a satellite similar to the Sagittarius dwarf galaxy, we quantitatively analyse the vertical response of the Galactic disc to the satellite's repeated impacts. We approximate the vertical distortion of the Galactic disc as the sum of the first three Fourier azimuthal terms m = 0, 1, and 2, and observe their evolution in different dynamical regimes of interaction. After the first interaction, the m = 0 term manifests itself as outgoing ring-like vertical distortions. The m = 1 term (S-shape warp) is prograde when the impacts of the satellite are more frequent, or in general close to an interaction, whereas it is slowly retrograde in the most quiescent phases. The m = 2 term is typically prograde, and close to an interaction it couples with the m = 1 term. Finally, we find that the vertical response of the disc can be recovered in an unbiased way using the instantaneous positions and velocities of stars in a limited volume of the Galactic disc, analogous to real data, and that the measured vertical pattern speeds have a constraining power in the context of a Milky Way-satellite interaction.This work used the Extreme Science and Engineering Discovery Environment (XSEDE), which is supported by National Science Foundation (NSF) grant number OCI-1053575. This work was supported in part by World Premier International Research Center Initiative (WPI Initiative), MEXT, Japan. EP acknowledges the partial support of ASI (Agenzia Spaziale Italiana) through contract ASI 2018-24-HH.0, Gaia Mission - The Italian Participation to DPAC. CL acknowledges funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement no. 852839). KVJ and DF were supported by NSF grant AST-1715582. EP acknowledges support from the Centre national d’études spatiales (CNES).Royal Astronomical SocietyExtreme Science and Engineering Discovery Environment (US)National Science Foundation (US)Ministry of Education, Culture, Sports, Science and Technology (Japan)Agenzia Spaziale ItalianaEuropean CommissionCentre National D'Etudes Spatiales (France)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2022202220212022info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/260898reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/EC/H2020/852839http://doi.org/10.1093/mnras/stab2245Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2608982026-05-22T06:33:51Z
dc.title.none.fl_str_mv Measuring the vertical response of the Galactic disc to an infalling satellite
title Measuring the vertical response of the Galactic disc to an infalling satellite
spellingShingle Measuring the vertical response of the Galactic disc to an infalling satellite
Poggio, Eloisa
Galaxy: disc
Galaxy: evolution
Galaxy: kinematics and dynamics
Galaxy: structure
Local group
title_short Measuring the vertical response of the Galactic disc to an infalling satellite
title_full Measuring the vertical response of the Galactic disc to an infalling satellite
title_fullStr Measuring the vertical response of the Galactic disc to an infalling satellite
title_full_unstemmed Measuring the vertical response of the Galactic disc to an infalling satellite
title_sort Measuring the vertical response of the Galactic disc to an infalling satellite
dc.creator.none.fl_str_mv Poggio, Eloisa
Laporte, Chervin F. P.
Johnston, Kathryn V.
D'Onghia, Elena
Drimmel, Ronald
Grion Filho, Douglas
author Poggio, Eloisa
author_facet Poggio, Eloisa
Laporte, Chervin F. P.
Johnston, Kathryn V.
D'Onghia, Elena
Drimmel, Ronald
Grion Filho, Douglas
author_role author
author2 Laporte, Chervin F. P.
Johnston, Kathryn V.
D'Onghia, Elena
Drimmel, Ronald
Grion Filho, Douglas
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Extreme Science and Engineering Discovery Environment (US)
National Science Foundation (US)
Ministry of Education, Culture, Sports, Science and Technology (Japan)
Agenzia Spaziale Italiana
European Commission
Centre National D'Etudes Spatiales (France)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Galaxy: disc
Galaxy: evolution
Galaxy: kinematics and dynamics
Galaxy: structure
Local group
topic Galaxy: disc
Galaxy: evolution
Galaxy: kinematics and dynamics
Galaxy: structure
Local group
description Using N-body simulations of the Milky Way interacting with a satellite similar to the Sagittarius dwarf galaxy, we quantitatively analyse the vertical response of the Galactic disc to the satellite's repeated impacts. We approximate the vertical distortion of the Galactic disc as the sum of the first three Fourier azimuthal terms m = 0, 1, and 2, and observe their evolution in different dynamical regimes of interaction. After the first interaction, the m = 0 term manifests itself as outgoing ring-like vertical distortions. The m = 1 term (S-shape warp) is prograde when the impacts of the satellite are more frequent, or in general close to an interaction, whereas it is slowly retrograde in the most quiescent phases. The m = 2 term is typically prograde, and close to an interaction it couples with the m = 1 term. Finally, we find that the vertical response of the disc can be recovered in an unbiased way using the instantaneous positions and velocities of stars in a limited volume of the Galactic disc, analogous to real data, and that the measured vertical pattern speeds have a constraining power in the context of a Milky Way-satellite interaction.
publishDate 2021
dc.date.none.fl_str_mv 2021
2022
2022
2022
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/260898
url http://hdl.handle.net/10261/260898
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/EC/H2020/852839
http://doi.org/10.1093/mnras/stab2245
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Royal Astronomical Society
publisher.none.fl_str_mv Royal Astronomical Society
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869409898206330880
score 15,812429

Registos relacionados