Extensions to models of the galaxy–halo connection

  title={Extensions to models of the galaxy–halo connection},
  author={Boryana Hadzhiyska and Sownak Bose and Daniel J. Eisenstein and Lars Hernquist},
  journal={arXiv: Cosmology and Nongalactic Astrophysics},
We explore two widely used empirical models for the galaxy-halo connection, subhalo abundance matching (SHAM) and the halo occupation distribution (HOD) and compare their predictions with the hydrodynamical simulation IllustrisTNG (TNG) for a range of statistics that quantify the galaxy distribution at $n_{\rm gal}\approx1.3\times10^{-3}\,[{\rm Mpc}/h]^{-3}$. We observe that in their most straightforward implementations, both models fail to reproduce the two-point clustering measured in TNG. We… Expand
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