Extended Data Fig. 8: Halo mass as a function of ICM temperature.
From: Sunyaev–Zeldovich detection of hot intracluster gas at redshift 4.3
The coloured curves show combinations of halo mass M200 and mass-weighted ICM temperature ⟨T200⟩ that reproduce the observed tSZ decrement for different assumed ICM fractions (from 0.02 to 0.10, as labelled). The corresponding ICM mass MICM is indicated in the top axis. The sub-virialized (blue) and super-virialized (red) regions are separated by the virialized temperature for different M200. The dotted line indicates the dynamical mass of SPT2349−5616. The light hatched band denotes the possible MICM range allowed by the universal baryonic fraction fb = 0.155. Without assuming an extreme ICM fraction fICM, either a more massive virialized halo or a super-virialized ICM gas is necessary to match the observed tSZ decrement.
