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Galaxy properties in the cosmic web of EAGLE simulation

Xu, Wenxiao; Guo, Qi; Zheng, Haonan; Gao, Liang; Lacey, Cedric; Gu, Qing; Liao, Shihong; Shao, Shi; Mao, Tianxiang; Zhang, Tianchi; Chen, Xuelei

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Wenxiao Xu

Qi Guo

Haonan Zheng

Liang Gao

Qing Gu

Shihong Liao

Tianxiang Mao

Tianchi Zhang

Xuelei Chen


We investigate the dependence of the galaxy properties on cosmic web environments using the most up-to-date hydrodynamic simulation: Evolution and Assembly of Galaxies and their Environments (EAGLE). The baryon fractions in haloes and the amplitudes of the galaxy luminosity function decrease going from knots to filaments to sheets to voids. Interestingly, the value of L* varies dramatically in different cosmic web environments. At z = 0, we find a characteristic halo mass of 1012h−1M⊙⁠, below which the stellar-to-halo mass ratio is higher in knots while above which it reverses. This particular halo mass corresponds to a characteristic stellar mass of 1.8×1010h−1M⊙⁠. Below the characteristic stellar mass central galaxies have redder colors, lower sSFRs and higher metallicities in knots than those in filaments, sheets and voids, while above this characteristic stellar mass, the cosmic web environmental dependences either reverse or vanish. Such dependences can be attributed to the fact that the active galaxy fraction decreases along voids, sheets, filaments and knots. The cosmic web dependences get weaker towards higher redshifts for most of the explored galaxy properties and scaling relations, except for the gas metallicity vs. stellar mass relation.


Xu, W., Guo, Q., Zheng, H., Gao, L., Lacey, C., Gu, Q., …Chen, X. (2020). Galaxy properties in the cosmic web of EAGLE simulation. Monthly Notices of the Royal Astronomical Society, 498(2), 1839-1851.

Journal Article Type Article
Acceptance Date Aug 11, 2020
Online Publication Date Aug 20, 2020
Publication Date 2020-10
Deposit Date Aug 21, 2020
Publicly Available Date Sep 18, 2020
Journal Monthly Notices of the Royal Astronomical Society
Print ISSN 0035-8711
Electronic ISSN 1365-2966
Publisher Royal Astronomical Society
Peer Reviewed Peer Reviewed
Volume 498
Issue 2
Pages 1839-1851


Published Journal Article (6.3 Mb)

Copyright Statement
This article has been accepted for publication in Monthly notices of the Royal Astronomical Society. ©: 2020 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.

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