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Galaxy properties and the cosmic web in simulations.

Metuki, O. and Libeskind, N.I. and Hoffman, Y. and Crain, R.A. and Theuns, Tom (2015) 'Galaxy properties and the cosmic web in simulations.', Monthly notices of the Royal Astronomical Society., 446 (2). pp. 1458-1468.


We seek to understand the relationship between galaxy properties and their local environment, which calls for a proper formulation of the notion of environment. We analyse the Galaxies-Intergalactic Medium Interaction Calculation suite of cosmological hydrodynamical simulations within the framework of the cosmic web as formulated by Hoffman et al., focusing on properties of simulated dark matter haloes and luminous galaxies with respect to voids, sheets, filaments, and knots – the four elements of the cosmic web. We find that the mass functions of haloes depend on environment, which drives other environmental dependence of galaxy formation. The web shapes the halo mass function, and through the strong dependence of the galaxy properties on the mass of their host haloes, it also shapes the galaxy-(web) environment dependence.

Item Type:Article
Keywords:Galaxies: evolution, Galaxies: haloes, Large-scale structure of Universe.
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Publisher statement:This article has been accepted for publication in Monthly notices of the Royal Astronomical Society. © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
Date accepted:06 October 2014
Date deposited:15 April 2015
Date of first online publication:January 2015
Date first made open access:No date available

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