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- W2022073497 startingPage "646" @default.
- W2022073497 abstract "We present a method to build mock galaxy catalogues starting from a halo catalogue that uses halo occupation distribution (HOD) recipes as well as the subhalo abundance matching (SHAM) technique. Combining both prescriptions we are able to push the absolute magnitude of the resulting catalogue to fainter luminosities than using just the SHAM technique and can interpret our results in terms of the HOD modelling. We optimize the method by populating with galaxies friends-of-friends dark matter haloes extracted from the Marenostrum Institut de Ciències de l'Espai dark matter simulations and comparing them to observational constraints. Our resulting mock galaxy catalogues manage to reproduce the observed local galaxy luminosity function and the colour–magnitude distribution as observed by the Sloan Digital Sky Survey. They also reproduce the observed galaxy clustering properties as a function of luminosity and colour. In order to achieve that, the algorithm also includes scatter in the halo mass–galaxy luminosity relation derived from direct SHAM and a modified Navarro–Frenk–White mass density profile to place satellite galaxies in their host dark matter haloes. Improving on general usage of the HOD that fits the clustering for given magnitude limited samples, our catalogues are constructed to fit observations at all luminosities considered and therefore for any luminosity subsample. Overall, our algorithm is an economic procedure of obtaining galaxy mock catalogues down to faint magnitudes that are necessary to understand and interpret galaxy surveys." @default.
- W2022073497 created "2016-06-24" @default.
- W2022073497 creator A5010551501 @default.
- W2022073497 creator A5023412378 @default.
- W2022073497 creator A5059408574 @default.
- W2022073497 creator A5059500278 @default.
- W2022073497 creator A5062801348 @default.
- W2022073497 date "2014-12-17" @default.
- W2022073497 modified "2023-10-18" @default.
- W2022073497 title "An algorithm to build mock galaxy catalogues using MICE simulations" @default.
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