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相关论文: Lightcone mock catalogues from semi-analytic model…

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The use of realistic mock galaxy catalogues is essential in the preparation of large galaxy surveys, in order to test and validate theoretical models and to assess systematics. We present an updated version of the mock catalogue constructed…

宇宙学与河外天体物理 · 物理学 2022-09-14 Alex Smith , Shaun Cole , Cameron Grove , Peder Norberg , Pauline Zarrouk

Future galaxy surveys require realistic mock catalogues to understand and quantify systematics in order to make precise cosmological measurements. We present a halo lightcone catalogue and halo occupation distribution (HOD) galaxy catalogue…

宇宙学与河外天体物理 · 物理学 2017-08-02 Alex Smith , Shaun Cole , Carlton Baugh , Zheng Zheng , Raul Angulo , Peder Norberg , Idit Zehavi

We use the BzK color selection proposed by Daddi et al. (2004) to obtain a sample of 1092 faint star-forming galaxies (hereafter sBzKs) from 180 arcmin^2 in the Subaru Deep Field. This sample represents star-forming galaxies at 1.4 < z <…

We describe a method for constructing mock galaxy catalogues which are well suited for use in conjunction with large photometric surveys. We use the semi-analytic galaxy formation model of Bower et al. implemented in the Millennium…

天体物理学 · 物理学 2009-11-13 Yan-Chuan Cai , Raul E. Angulo , Carlton M. Baugh , Shaun Cole , Carlos S. Frenk , Adrian Jenkins

Mock catalogues are a crucial tool in the analysis of galaxy surveys data, both for the accurate computation of covariance matrices, and for the optimisation of analysis methodology and validation of data sets. In this paper, we present a…

We develop empirical methods for modeling the galaxy population and populating cosmological N-body simulations with mock galaxies according to the observed properties of galaxies in survey data. We use these techniques to produce a new set…

宇宙学与河外天体物理 · 物理学 2015-06-05 Brian F. Gerke , Risa H. Wechsler , Peter S. Behroozi , Michael C. Cooper , Renbin Yan , Alison L. Coil

We model the galaxy formation in a series of high-resolution N-body simulations using the semi-analytical approach. Unlike many earlier investigations based on semi-analytical models, we make use of the subhalos resolved in the $N$-body…

天体物理学 · 物理学 2009-10-19 X. Kang , Y. P. Jing , H. J. Mo , G. Boerner

We present a new methodology to generate mock halo or galaxy catalogues, which have accurate clustering properties, nearly indistinguishable from full $N$-body solutions, in terms of the one-point, two-point, and three-point statistics. In…

宇宙学与河外天体物理 · 物理学 2017-08-08 Chia-Hsun Chuang , Francisco-Shu Kitaura , Francisco Prada , Cheng Zhao , Gustavo Yepes

A critical step to create realistic mock catalogs that support large-scale photometric and spectroscopic sky surveys is the production of cosmological simulations that accurately model the survey observables taking into account the…

[abridged] We construct lightcones for the semi-analytic galaxy formation simulation of Guo et al. (2011) and make mock catalogues for comparison with deep high-redshift surveys. Photometric properties are calculated with two different…

宇宙学与河外天体物理 · 物理学 2015-05-30 Bruno Henriques , Simon White , Gerard Lemson , Peter Thomas , Qi Guo , Gabriel-Dominique Marleau , Roderik Overzier

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…

星系天体物理 · 物理学 2015-06-23 J. Carretero , F. J. Castander , E. Gaztanaga , M. Crocce , P. Fosalba

A simple two color selection based on B-, z-, and K- band photometry is proposed for culling galaxies at 1.4<z<2.5 in K-selected samples and classifying them as star-forming or passive systems. The method is calibrated on the highly…

天体物理学 · 物理学 2009-11-10 E. Daddi , A. Cimatti , A. Renzini , A. Fontana , M. Mignoli , L. Pozzetti , P. Tozzi , G. Zamorani

We describe a method for generating halo catalogues on the light cone using the \Abacus{AbacusSummit} suite of $N$-body simulations. The main application of these catalogues is the construction of realistic mock galaxy catalogues and weak…

宇宙学与河外天体物理 · 物理学 2021-10-25 Boryana Hadzhiyska , Lehman H. Garrison , Daniel Eisenstein , Sownak Bose

The most massive and luminous galaxies in the Universe serve as powerful probes to study the formation of structure, the assembly of mass, and cosmology. However, their detailed formation and evolution is still barely understood. Here we…

Accurate mock galaxy catalogues are crucial to validate analysis pipelines used to constrain dark energy models. We present a fast HOD-fitting method which we apply to the AbacusSummit simulations to create a set of mock catalogues for the…

We use the GALFORM semi-analytical galaxy formation model implemented in the Planck Millennium N-body simulation to build a mock galaxy catalogue on an observer's past lightcone. The mass resolution of this N-body simulation is almost an…

We introduce a mock galaxy catalog built for the CSST extragalactic surveys using the primary runs of the Jiutian $N$-body simulation suites. The catalogs are built by coupling the GAlaxy Evolution and Assembly (GAEA) semi-analytical model…

We present a new suite of mock galaxy catalogs mimicking the low-redshift Universe, based on an updated halo occupation distribution (HOD) model and a scaling relation between optical properties and the neutral hydrogen (HI) content of…

星系天体物理 · 物理学 2021-03-24 Aseem Paranjape , Tirthankar Roy Choudhury , Ravi K. Sheth

We present one thousand mock galaxy catalogues for the analysis of the Low Redshift Sample (LOWZ, effective redshift z ~ 10.32) of the Baryon Oscillation Spectroscopic Survey Data Releases 10 and 11. These mocks have been created following…

We present mock catalogs created to support the interpretation of the CANDELS survey. We extract halos along past lightcones from the Bolshoi Planck dissipationless N-body simulations and populate these halos with galaxies using two…

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