Linking the brightest stellar streams with the accretion history of Milky Way like galaxies
- Autores
- Vera Casanova, Alex; Gómez, Facundo Ariel; Monachesi, Antonela; Gargiulo, Ignacio Daniel; Pallero, Diego; Grand, Robert J. J.; Marinacci, Federico; Pakmor, Rüdiger; Simpson, Christine M.; Frenk, Carlos S.; Morales, Gustavo
- Año de publicación
- 2022
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- According to the current galaxy-formation paradigm, mergers and interactions play an important role in shaping present-day galaxies. The remnants of this merger activity can be used to constrain galaxy-formation models. In this work, we use a sample of 30 hydrodynamical simulations of Milky Way mass haloes, from the AURIGA project, to generate surface brightness maps and search for the brightest stream in each halo as a function of varying limiting magnitude. We find that none of the models shows signatures of stellar streams at $mu {r}^{lim} le 25$ mag arcsec-2. The stream detection increases significantly between 28 and 29 mag arcsec-2. Nevertheless, even at 31 mag arcsec-2, 13 per cent of our models show no detectable streams. We study the properties of the brightest streams progenitors (BSPs). We find that BSPs are accreted within a broad range of infall times, from 1.6 to 10 Gyr ago, with only 25 per cent accreted within the last 5 Gyrs; thus, most BSPs correspond to relatively early accretion events. We also find that 37 per cent of the BSPs survive to the present day. The median infall times for surviving and disrupted BSPs are 5.6 and 6.7 Gyr, respectively. We find a clear relation between infall time and infall mass of the BSPs, such that more massive progenitors tend to be accreted at later times. However, we find that the BSPs are not, in most cases, the dominant contributor to the accreted stellar halo of each galaxy.
Fil: Vera Casanova, Alex. Universidad de La Serena; Chile
Fil: Gómez, Facundo Ariel. Universidad de La Serena; Chile
Fil: Monachesi, Antonela. Universidad de La Serena; Chile. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Gargiulo, Ignacio Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Pallero, Diego. Universidad de La Serena; Chile
Fil: Grand, Robert J. J.. Gobierno de la República Federal de Alemania. Max Planck Institut für Astrophysik; Alemania
Fil: Marinacci, Federico. Universidad de Bologna; Italia
Fil: Pakmor, Rüdiger. Gobierno de la República Federal de Alemania. Max Planck Institut für Astrophysik; Alemania
Fil: Simpson, Christine M.. University of Chicago; Estados Unidos
Fil: Frenk, Carlos S.. University of Durham; Reino Unido
Fil: Morales, Gustavo. Universidad de La Serena; Chile - Materia
-
GALAXIES: DWARF
GALAXIES: STRUCTURE
GALAXY: HALO
METHODS: NUMERICAL - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
.jpg)
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/211736
Ver los metadatos del registro completo
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Linking the brightest stellar streams with the accretion history of Milky Way like galaxiesVera Casanova, AlexGómez, Facundo ArielMonachesi, AntonelaGargiulo, Ignacio DanielPallero, DiegoGrand, Robert J. J.Marinacci, FedericoPakmor, RüdigerSimpson, Christine M.Frenk, Carlos S.Morales, GustavoGALAXIES: DWARFGALAXIES: STRUCTUREGALAXY: HALOMETHODS: NUMERICALhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1According to the current galaxy-formation paradigm, mergers and interactions play an important role in shaping present-day galaxies. The remnants of this merger activity can be used to constrain galaxy-formation models. In this work, we use a sample of 30 hydrodynamical simulations of Milky Way mass haloes, from the AURIGA project, to generate surface brightness maps and search for the brightest stream in each halo as a function of varying limiting magnitude. We find that none of the models shows signatures of stellar streams at $mu {r}^{lim} le 25$ mag arcsec-2. The stream detection increases significantly between 28 and 29 mag arcsec-2. Nevertheless, even at 31 mag arcsec-2, 13 per cent of our models show no detectable streams. We study the properties of the brightest streams progenitors (BSPs). We find that BSPs are accreted within a broad range of infall times, from 1.6 to 10 Gyr ago, with only 25 per cent accreted within the last 5 Gyrs; thus, most BSPs correspond to relatively early accretion events. We also find that 37 per cent of the BSPs survive to the present day. The median infall times for surviving and disrupted BSPs are 5.6 and 6.7 Gyr, respectively. We find a clear relation between infall time and infall mass of the BSPs, such that more massive progenitors tend to be accreted at later times. However, we find that the BSPs are not, in most cases, the dominant contributor to the accreted stellar halo of each galaxy.Fil: Vera Casanova, Alex. Universidad de La Serena; ChileFil: Gómez, Facundo Ariel. Universidad de La Serena; ChileFil: Monachesi, Antonela. Universidad de La Serena; Chile. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Gargiulo, Ignacio Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; ArgentinaFil: Pallero, Diego. Universidad de La Serena; ChileFil: Grand, Robert J. J.. Gobierno de la República Federal de Alemania. Max Planck Institut für Astrophysik; AlemaniaFil: Marinacci, Federico. Universidad de Bologna; ItaliaFil: Pakmor, Rüdiger. Gobierno de la República Federal de Alemania. Max Planck Institut für Astrophysik; AlemaniaFil: Simpson, Christine M.. University of Chicago; Estados UnidosFil: Frenk, Carlos S.. University of Durham; Reino UnidoFil: Morales, Gustavo. Universidad de La Serena; ChileWiley Blackwell Publishing, Inc2022-08info: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/11336/211736Vera Casanova, Alex; Gómez, Facundo Ariel; Monachesi, Antonela; Gargiulo, Ignacio Daniel; Pallero, Diego; et al.; Linking the brightest stellar streams with the accretion history of Milky Way like galaxies; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 514; 4; 8-2022; 4898-49110035-8711CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stac1636info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:15:03Zoai:ri.conicet.gov.ar:11336/211736instacron: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 10:15:03.429CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
| dc.title.none.fl_str_mv |
Linking the brightest stellar streams with the accretion history of Milky Way like galaxies |
| title |
Linking the brightest stellar streams with the accretion history of Milky Way like galaxies |
| spellingShingle |
Linking the brightest stellar streams with the accretion history of Milky Way like galaxies Vera Casanova, Alex GALAXIES: DWARF GALAXIES: STRUCTURE GALAXY: HALO METHODS: NUMERICAL |
| title_short |
Linking the brightest stellar streams with the accretion history of Milky Way like galaxies |
| title_full |
Linking the brightest stellar streams with the accretion history of Milky Way like galaxies |
| title_fullStr |
Linking the brightest stellar streams with the accretion history of Milky Way like galaxies |
| title_full_unstemmed |
Linking the brightest stellar streams with the accretion history of Milky Way like galaxies |
| title_sort |
Linking the brightest stellar streams with the accretion history of Milky Way like galaxies |
| dc.creator.none.fl_str_mv |
Vera Casanova, Alex Gómez, Facundo Ariel Monachesi, Antonela Gargiulo, Ignacio Daniel Pallero, Diego Grand, Robert J. J. Marinacci, Federico Pakmor, Rüdiger Simpson, Christine M. Frenk, Carlos S. Morales, Gustavo |
| author |
Vera Casanova, Alex |
| author_facet |
Vera Casanova, Alex Gómez, Facundo Ariel Monachesi, Antonela Gargiulo, Ignacio Daniel Pallero, Diego Grand, Robert J. J. Marinacci, Federico Pakmor, Rüdiger Simpson, Christine M. Frenk, Carlos S. Morales, Gustavo |
| author_role |
author |
| author2 |
Gómez, Facundo Ariel Monachesi, Antonela Gargiulo, Ignacio Daniel Pallero, Diego Grand, Robert J. J. Marinacci, Federico Pakmor, Rüdiger Simpson, Christine M. Frenk, Carlos S. Morales, Gustavo |
| author2_role |
author author author author author author author author author author |
| dc.subject.none.fl_str_mv |
GALAXIES: DWARF GALAXIES: STRUCTURE GALAXY: HALO METHODS: NUMERICAL |
| topic |
GALAXIES: DWARF GALAXIES: STRUCTURE GALAXY: HALO METHODS: NUMERICAL |
| purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
| dc.description.none.fl_txt_mv |
According to the current galaxy-formation paradigm, mergers and interactions play an important role in shaping present-day galaxies. The remnants of this merger activity can be used to constrain galaxy-formation models. In this work, we use a sample of 30 hydrodynamical simulations of Milky Way mass haloes, from the AURIGA project, to generate surface brightness maps and search for the brightest stream in each halo as a function of varying limiting magnitude. We find that none of the models shows signatures of stellar streams at $mu {r}^{lim} le 25$ mag arcsec-2. The stream detection increases significantly between 28 and 29 mag arcsec-2. Nevertheless, even at 31 mag arcsec-2, 13 per cent of our models show no detectable streams. We study the properties of the brightest streams progenitors (BSPs). We find that BSPs are accreted within a broad range of infall times, from 1.6 to 10 Gyr ago, with only 25 per cent accreted within the last 5 Gyrs; thus, most BSPs correspond to relatively early accretion events. We also find that 37 per cent of the BSPs survive to the present day. The median infall times for surviving and disrupted BSPs are 5.6 and 6.7 Gyr, respectively. We find a clear relation between infall time and infall mass of the BSPs, such that more massive progenitors tend to be accreted at later times. However, we find that the BSPs are not, in most cases, the dominant contributor to the accreted stellar halo of each galaxy. Fil: Vera Casanova, Alex. Universidad de La Serena; Chile Fil: Gómez, Facundo Ariel. Universidad de La Serena; Chile Fil: Monachesi, Antonela. Universidad de La Serena; Chile. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Gargiulo, Ignacio Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina Fil: Pallero, Diego. Universidad de La Serena; Chile Fil: Grand, Robert J. J.. Gobierno de la República Federal de Alemania. Max Planck Institut für Astrophysik; Alemania Fil: Marinacci, Federico. Universidad de Bologna; Italia Fil: Pakmor, Rüdiger. Gobierno de la República Federal de Alemania. Max Planck Institut für Astrophysik; Alemania Fil: Simpson, Christine M.. University of Chicago; Estados Unidos Fil: Frenk, Carlos S.. University of Durham; Reino Unido Fil: Morales, Gustavo. Universidad de La Serena; Chile |
| description |
According to the current galaxy-formation paradigm, mergers and interactions play an important role in shaping present-day galaxies. The remnants of this merger activity can be used to constrain galaxy-formation models. In this work, we use a sample of 30 hydrodynamical simulations of Milky Way mass haloes, from the AURIGA project, to generate surface brightness maps and search for the brightest stream in each halo as a function of varying limiting magnitude. We find that none of the models shows signatures of stellar streams at $mu {r}^{lim} le 25$ mag arcsec-2. The stream detection increases significantly between 28 and 29 mag arcsec-2. Nevertheless, even at 31 mag arcsec-2, 13 per cent of our models show no detectable streams. We study the properties of the brightest streams progenitors (BSPs). We find that BSPs are accreted within a broad range of infall times, from 1.6 to 10 Gyr ago, with only 25 per cent accreted within the last 5 Gyrs; thus, most BSPs correspond to relatively early accretion events. We also find that 37 per cent of the BSPs survive to the present day. The median infall times for surviving and disrupted BSPs are 5.6 and 6.7 Gyr, respectively. We find a clear relation between infall time and infall mass of the BSPs, such that more massive progenitors tend to be accreted at later times. However, we find that the BSPs are not, in most cases, the dominant contributor to the accreted stellar halo of each galaxy. |
| publishDate |
2022 |
| dc.date.none.fl_str_mv |
2022-08 |
| 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/11336/211736 Vera Casanova, Alex; Gómez, Facundo Ariel; Monachesi, Antonela; Gargiulo, Ignacio Daniel; Pallero, Diego; et al.; Linking the brightest stellar streams with the accretion history of Milky Way like galaxies; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 514; 4; 8-2022; 4898-4911 0035-8711 CONICET Digital CONICET |
| url |
http://hdl.handle.net/11336/211736 |
| identifier_str_mv |
Vera Casanova, Alex; Gómez, Facundo Ariel; Monachesi, Antonela; Gargiulo, Ignacio Daniel; Pallero, Diego; et al.; Linking the brightest stellar streams with the accretion history of Milky Way like galaxies; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 514; 4; 8-2022; 4898-4911 0035-8711 CONICET Digital CONICET |
| dc.language.none.fl_str_mv |
eng |
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eng |
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info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stac1636 |
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info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
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openAccess |
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Wiley Blackwell Publishing, Inc |
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Wiley Blackwell Publishing, Inc |
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reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
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dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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