Effects of chaos on the detectability of stellar streams
- Autores
- Mestre, Martín Federico; Llinares, Claudio; Carpintero, Daniel Diego
- Año de publicación
- 2019
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Observations show that stellar streams originating in satellite dwarf galaxies are frequent in the Universe. While such events are predicted by theory, it is not clear how many of the streams that are generated are washed out afterwards to the point in which it is impossible to detect them. Here, we study how these diffusion times are affected by the fact that typical gravitational potentials of the host galaxies can sustain chaotic orbits. We do this by comparing the behaviour of simulated stellar streams that reside in chaotic or non-chaotic regions of the phase space. We find that chaos does reduce the time interval in which streams can be detected. By analysing detectability criteria in configuration and velocity space, we find that the impact of these results on the observations depends on the quality of both the data and the underlying stellar halo model. For all the stellar streams, we obtain a similar upper limit to the detectable mass.
Instituto de Astrofísica de La Plata - Materia
-
Ciencias Astronómicas
Astronomía
chaos
Galaxy: kinematics and dynamics
galaxies: haloes - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by/4.0/
- Repositorio
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/125286
Ver los metadatos del registro completo
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Effects of chaos on the detectability of stellar streamsMestre, Martín FedericoLlinares, ClaudioCarpintero, Daniel DiegoCiencias AstronómicasAstronomíachaosGalaxy: kinematics and dynamicsgalaxies: haloesObservations show that stellar streams originating in satellite dwarf galaxies are frequent in the Universe. While such events are predicted by theory, it is not clear how many of the streams that are generated are washed out afterwards to the point in which it is impossible to detect them. Here, we study how these diffusion times are affected by the fact that typical gravitational potentials of the host galaxies can sustain chaotic orbits. We do this by comparing the behaviour of simulated stellar streams that reside in chaotic or non-chaotic regions of the phase space. We find that chaos does reduce the time interval in which streams can be detected. By analysing detectability criteria in configuration and velocity space, we find that the impact of these results on the observations depends on the quality of both the data and the underlying stellar halo model. For all the stellar streams, we obtain a similar upper limit to the detectable mass.Instituto de Astrofísica de La Plata2019-12-13info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf4398-4408http://sedici.unlp.edu.ar/handle/10915/125286enginfo:eu-repo/semantics/altIdentifier/issn/0035-8711info:eu-repo/semantics/altIdentifier/issn/1365-2966info:eu-repo/semantics/altIdentifier/arxiv/1912.05592info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stz3505info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:29:54Zoai:sedici.unlp.edu.ar:10915/125286Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:29:54.712SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
Effects of chaos on the detectability of stellar streams |
| title |
Effects of chaos on the detectability of stellar streams |
| spellingShingle |
Effects of chaos on the detectability of stellar streams Mestre, Martín Federico Ciencias Astronómicas Astronomía chaos Galaxy: kinematics and dynamics galaxies: haloes |
| title_short |
Effects of chaos on the detectability of stellar streams |
| title_full |
Effects of chaos on the detectability of stellar streams |
| title_fullStr |
Effects of chaos on the detectability of stellar streams |
| title_full_unstemmed |
Effects of chaos on the detectability of stellar streams |
| title_sort |
Effects of chaos on the detectability of stellar streams |
| dc.creator.none.fl_str_mv |
Mestre, Martín Federico Llinares, Claudio Carpintero, Daniel Diego |
| author |
Mestre, Martín Federico |
| author_facet |
Mestre, Martín Federico Llinares, Claudio Carpintero, Daniel Diego |
| author_role |
author |
| author2 |
Llinares, Claudio Carpintero, Daniel Diego |
| author2_role |
author author |
| dc.subject.none.fl_str_mv |
Ciencias Astronómicas Astronomía chaos Galaxy: kinematics and dynamics galaxies: haloes |
| topic |
Ciencias Astronómicas Astronomía chaos Galaxy: kinematics and dynamics galaxies: haloes |
| dc.description.none.fl_txt_mv |
Observations show that stellar streams originating in satellite dwarf galaxies are frequent in the Universe. While such events are predicted by theory, it is not clear how many of the streams that are generated are washed out afterwards to the point in which it is impossible to detect them. Here, we study how these diffusion times are affected by the fact that typical gravitational potentials of the host galaxies can sustain chaotic orbits. We do this by comparing the behaviour of simulated stellar streams that reside in chaotic or non-chaotic regions of the phase space. We find that chaos does reduce the time interval in which streams can be detected. By analysing detectability criteria in configuration and velocity space, we find that the impact of these results on the observations depends on the quality of both the data and the underlying stellar halo model. For all the stellar streams, we obtain a similar upper limit to the detectable mass. Instituto de Astrofísica de La Plata |
| description |
Observations show that stellar streams originating in satellite dwarf galaxies are frequent in the Universe. While such events are predicted by theory, it is not clear how many of the streams that are generated are washed out afterwards to the point in which it is impossible to detect them. Here, we study how these diffusion times are affected by the fact that typical gravitational potentials of the host galaxies can sustain chaotic orbits. We do this by comparing the behaviour of simulated stellar streams that reside in chaotic or non-chaotic regions of the phase space. We find that chaos does reduce the time interval in which streams can be detected. By analysing detectability criteria in configuration and velocity space, we find that the impact of these results on the observations depends on the quality of both the data and the underlying stellar halo model. For all the stellar streams, we obtain a similar upper limit to the detectable mass. |
| publishDate |
2019 |
| dc.date.none.fl_str_mv |
2019-12-13 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
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http://sedici.unlp.edu.ar/handle/10915/125286 |
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eng |
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eng |
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openAccess |
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