Effects of chaos on the detectability of stellar streams
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...
| Autores principales: | , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
2019
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/125286 |
| Aporte de: |
| id |
I19-R120-10915-125286 |
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| record_format |
dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Ciencias Astronómicas Astronomía chaos Galaxy: kinematics and dynamics galaxies: haloes |
| spellingShingle |
Ciencias Astronómicas Astronomía chaos Galaxy: kinematics and dynamics galaxies: haloes Mestre, Martín Federico Llinares, Claudio Carpintero, Daniel Diego Effects of chaos on the detectability of stellar streams |
| topic_facet |
Ciencias Astronómicas Astronomía chaos Galaxy: kinematics and dynamics galaxies: haloes |
| 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. |
| format |
Articulo Articulo |
| author |
Mestre, Martín Federico Llinares, Claudio Carpintero, Daniel Diego |
| author_facet |
Mestre, Martín Federico Llinares, Claudio Carpintero, Daniel Diego |
| author_sort |
Mestre, Martín Federico |
| title |
Effects of chaos on the detectability of stellar streams |
| 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 |
| publishDate |
2019 |
| url |
http://sedici.unlp.edu.ar/handle/10915/125286 |
| work_keys_str_mv |
AT mestremartinfederico effectsofchaosonthedetectabilityofstellarstreams AT llinaresclaudio effectsofchaosonthedetectabilityofstellarstreams AT carpinterodanieldiego effectsofchaosonthedetectabilityofstellarstreams |
| bdutipo_str |
Repositorios |
| _version_ |
1764820451485286400 |