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Mass proxy quality of massive halo properties in the illustrisTNG and flamingo simulations: I. Hot gas

We examine scale and redshift dependence of mass-property relations (MPRs) for five hot gas properties of two large group- bservationsand cluster-scale halo samples realized by the Illustris tng, TNG-Cluster, and FLAMINGO cosmological hydrodynamical simulations. For intrinsic properties of (i) hot g...

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Main Authors: Aljamal, Eddie (Author) , Evrard, August E (Author) , Farahi, Arya (Author) , Pillepich, Annalisa (Author) , Nelson, Dylan (Author) , Schaye, Joop (Author) , Schaller, Matthieu (Author) , Braspenning, Joey (Author)
Format: Article (Journal)
Language:English
Published: November 2025
In: Monthly notices of the Royal Astronomical Society
Year: 2025, Volume: 544, Issue: 1, Pages: 67-94
ISSN:1365-2966
DOI:10.1093/mnras/staf1665
Online Access:Verlag, kostenfrei, Volltext: https://doi.org/10.1093/mnras/staf1665
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Author Notes:Eddie Aljamal, August E Evrard, Arya Farahi, Annalisa Pillepich, Dylan Nelson, Joop Schaye, Matthieu Schaller and Joey Braspenning
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Summary:We examine scale and redshift dependence of mass-property relations (MPRs) for five hot gas properties of two large group- bservationsand cluster-scale halo samples realized by the Illustris tng, TNG-Cluster, and FLAMINGO cosmological hydrodynamical simulations. For intrinsic properties of (i) hot gas mass (Mgas), (ii) spectroscopic-like temperature (Tsl), (iii) soft-band X-ray luminosity (LX), and (iv) X-ray (YX), and (v) Sunyaev-Zel’dovich (YSZ) thermal energies, we use MPR parameters to infer mass proxy quality (MPQ) - the implied scatter in total halo mass conditioned on a property - for haloes with M500 ≥ 10 13 M}_\odot$ at redshifts,
Item Description:Veröffentlicht: 01. Oktober 2025
Gesehen am 10.12.2025
Physical Description:Online Resource
ISSN:1365-2966
DOI:10.1093/mnras/staf1665

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