The large-scale environment from cosmological simulations II: The redshift 
evolution and distributions of baryons

Cui, Weiguang; Knebe, Alexander; Libeskind, Noam I.; Planelles, Susana; Yang, Xiaohu; Cui, Wei; Davé, Romeel; Kang, Xi; Mostoghiu, Robert; Staveley-Smith, Lister; Wang, Huiyuan; Wang, Peng; Yepes, Gustavo

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The large-scale environment from cosmological simulations II: The redshift evolution and distributions of baryons

MPS-Authors

Cui, Weiguang
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Knebe, Alexander
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Libeskind, Noam I.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Planelles, Susana
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Yang, Xiaohu
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Cui, Wei
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Davé, Romeel
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Kang, Xi
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Mostoghiu, Robert
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Staveley-Smith, Lister
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Wang, Huiyuan
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Wang, Peng
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Yepes, Gustavo
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

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https://ui.adsabs.harvard.edu/abs/2019MNRAS.485.2367C
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Citation

Cui, W., Knebe, A., Libeskind, N. I., Planelles, S., Yang, X., Cui, W., et al. (2019). The large-scale environment from cosmological simulations II: The redshift evolution and distributions of baryons. Monthly Notices of the Royal Astronomical Society, 485, 2367-2379.

Cite as: https://hdl.handle.net/21.11116/0000-0005-D16E-4

Abstract

Following Cui et al. (2018; hereafter Paper I) on the classification of large-scale environments (LSE) at z = 0, we push our analysis to higher redshifts and study the evolution of LSE and the baryon distributions in them. Our aim is to investigate how baryons affect the LSE as a function of redshift. In agreement with Paper I, the baryon models have negligible effect on the LSE overall investigated redshifts. We further validate the conclusion obtained in Paper I that the gas web is an unbiased tracer of total matter - even better at high redshifts. By separating the gas mainly by temperature, we find that about 40 per cent of gas is in the so-called warm-hot intergalactic medium (WHIM). This fraction of gas mass in the WHIM decreases with redshift, especially from z = 1 (29 per cent) to z = 2.1 (10 per cent). By separating the whole WHIM gas mass into the four large-scale environments (i.e. voids, sheets, filaments, and knots), we find that about half of the WHIM gas is located in filaments. Although the total gas mass in WHIM decreases with redshift, the WHIM mass fractions in the different LSE seem unchanged.