Small-scale galaxy clustering in the EAGLE simulation
We study present-day galaxy clustering in the EAGLE cosmological hydrodynamical simulation. EAGLE's galaxy formation parameters were calibrated to reproduce the redshift z = 0.1 galaxy stellar mass function, and the simulation also reproduces galaxy colours well. The simulation volume is too sm...
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2017
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00358711_v470_n2_p1771_Artale http://hdl.handle.net/20.500.12110/paper_00358711_v470_n2_p1771_Artale |
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paper:paper_00358711_v470_n2_p1771_Artale2023-06-08T15:01:46Z Small-scale galaxy clustering in the EAGLE simulation Cosmology: theory Galaxies: evolution Galaxies: formation Galaxies: haloes Galaxies: statistics Large-scale structure of universe We study present-day galaxy clustering in the EAGLE cosmological hydrodynamical simulation. EAGLE's galaxy formation parameters were calibrated to reproduce the redshift z = 0.1 galaxy stellar mass function, and the simulation also reproduces galaxy colours well. The simulation volume is too small to correctly sample large-scale fluctuations and we therefore concentrate on scales smaller than a few mega parsecs.We find very good agreement with observed clustering measurements from the Galaxy And Mass Assembly (GAMA) survey, when galaxies are binned by stellar mass, colour or luminosity. However, low-mass red galaxies are clustered too strongly, which is at least partly due to limited numerical resolution. Apart from this limitation, we conclude that EAGLE galaxies inhabit similar dark matter haloes as observed GAMA galaxies, and that the radial distribution of satellite galaxies, as a function of stellar mass and colour, is similar to that observed as well. © 2017 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. 2017 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00358711_v470_n2_p1771_Artale http://hdl.handle.net/20.500.12110/paper_00358711_v470_n2_p1771_Artale |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Cosmology: theory Galaxies: evolution Galaxies: formation Galaxies: haloes Galaxies: statistics Large-scale structure of universe |
| spellingShingle |
Cosmology: theory Galaxies: evolution Galaxies: formation Galaxies: haloes Galaxies: statistics Large-scale structure of universe Small-scale galaxy clustering in the EAGLE simulation |
| topic_facet |
Cosmology: theory Galaxies: evolution Galaxies: formation Galaxies: haloes Galaxies: statistics Large-scale structure of universe |
| description |
We study present-day galaxy clustering in the EAGLE cosmological hydrodynamical simulation. EAGLE's galaxy formation parameters were calibrated to reproduce the redshift z = 0.1 galaxy stellar mass function, and the simulation also reproduces galaxy colours well. The simulation volume is too small to correctly sample large-scale fluctuations and we therefore concentrate on scales smaller than a few mega parsecs.We find very good agreement with observed clustering measurements from the Galaxy And Mass Assembly (GAMA) survey, when galaxies are binned by stellar mass, colour or luminosity. However, low-mass red galaxies are clustered too strongly, which is at least partly due to limited numerical resolution. Apart from this limitation, we conclude that EAGLE galaxies inhabit similar dark matter haloes as observed GAMA galaxies, and that the radial distribution of satellite galaxies, as a function of stellar mass and colour, is similar to that observed as well. © 2017 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. |
| title |
Small-scale galaxy clustering in the EAGLE simulation |
| title_short |
Small-scale galaxy clustering in the EAGLE simulation |
| title_full |
Small-scale galaxy clustering in the EAGLE simulation |
| title_fullStr |
Small-scale galaxy clustering in the EAGLE simulation |
| title_full_unstemmed |
Small-scale galaxy clustering in the EAGLE simulation |
| title_sort |
small-scale galaxy clustering in the eagle simulation |
| publishDate |
2017 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00358711_v470_n2_p1771_Artale http://hdl.handle.net/20.500.12110/paper_00358711_v470_n2_p1771_Artale |
| _version_ |
1768545683787218944 |