Stellar mass of BCG

Mohamed Elhashash
  • 20 Jun '23

Hello,

I have noted that the stellar masses of the Brightest Cluster Galaxies (BCGs) in the TNG simulations are approximately one order of magnitude greater than those obtained from observations. I would appreciate any explanation for this discrepancy.

Thanks

Dylan Nelson
  • 20 Jun '23

Hi Mohamed,

This is a complex comparison to make with observational data, with many systematic uncertainties. The result is also dependent on the resolution of the simulations. I suggest as a starting point Pillepich+2018 (Figs 9, 11, 14, A1)

Mohamed Elhashash
  • 20 Jun '23

Hi Dylan,

Thank you so much for your comment.

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