Matches in SemOpenAlex for { <https://semopenalex.org/work/W3154133003> ?p ?o ?g. }
- W3154133003 endingPage "2013" @default.
- W3154133003 startingPage "1999" @default.
- W3154133003 abstract "Galaxy clusters are excellent probes to study the effect of environment on galaxy formation and evolution. Along with high-quality observational data, accurate cosmological simulations are required to improve our understanding of galaxy evolution in these systems. In this work, we compare state-of-the-art observational data of massive galaxy clusters ($>10^{14} textrm{M}_{odot}$) at different redshifts ($0<z<1.5$) with predictions from the Hydrangea suite of cosmological hydrodynamic simulations of 24 massive galaxy clusters ($>10^{14} textrm{M}_{odot}$ at $z=0$). We compare three fundamental observables of galaxy clusters: the total stellar mass to halo mass ratio, the stellar mass function (SMF), and the radial mass density profile of the cluster galaxies. In the first two of these, the simulations agree well with the observations, albeit with a slightly too high abundance of $M_star lesssim 10^{10} textrm{M}_{odot}$ galaxies at $z gtrsim 1$. The NFW concentrations of cluster galaxies increase with redshift, in contrast to the decreasing dark matter halo concentrations. This previously observed behaviour is therefore due to a qualitatively different assembly of the smooth DM halo compared to the satellite population. Quantitatively, we however find a discrepancy in that the simulations predict higher stellar concentrations than observed at lower redshifts ($z<0.3$), by a factor of $approx$2. This may be due to selection bias in the simulations, or stem from shortcomings in the build-up and stripping of their inner satellite halo." @default.
- W3154133003 created "2021-04-26" @default.
- W3154133003 creator A5016823102 @default.
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- W3154133003 creator A5041193928 @default.
- W3154133003 creator A5046073017 @default.
- W3154133003 creator A5047552496 @default.
- W3154133003 date "2021-04-16" @default.
- W3154133003 modified "2023-10-15" @default.
- W3154133003 title "The stellar mass function and evolution of the density profile of galaxy clusters from the Hydrangea simulations at 0 < <i>z</i> < 1.5" @default.
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