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How Do Galaxy Properties Affect Void Statistics?
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DOI：10.3847/1538-4357/abadff.png)
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摘要
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Using mapping from dark matter halos to galaxy properties based on hydrodynamical simulations, we explore the impact of galaxy properties on the void size function and the void-galaxy correlation function. We replicate the properties of galaxies fromIllustrisonMassiveNushalos, to perform both luminosity and star formation rate cuts onMassiveNushalos. We compare the impact of such cuts on void properties with respect to cuts on halo mass (as usually performed on halo catalogs driven fromN-body simulations). We find that void catalogs built from luminosity-selected galaxies and halos are consistent within errors, while void catalogs built from star formation rate-selected galaxies differ from void catalogs built on halos. We investigate the reason for this difference. Our work suggests that voids built on galaxy catalogs (selected through luminosity cuts) can be reliably studied using halos in dark matter simulations.
Keyword:
Large-scale structure of the universe
Voids
Catalogs
Surveys
Cosmology
Hydrodynamical simulations
N-body simulations
期刊
IF:
5.4
论文数:
8.3W
被引数:
32.0W
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