Outputs (359)

Extensions to the halo occupation distribution model for more accurate clustering predictions (2019)
Journal Article
Jiménez, E., Contreras, S., Padilla, N., Zehavi, I., Baugh, C. M., & Gonzalez-Perez, V. (2019). Extensions to the halo occupation distribution model for more accurate clustering predictions. Monthly Notices of the Royal Astronomical Society, 490(3), 3532-3544. https://doi.org/10.1093/mnras/stz2790

We test different implementations of the halo occupation distribution (HOD) model to reconstruct the spatial distribution of galaxies as predicted by a version of the L-GALAXIES semi-analytical model (SAM). We compare the measured two-point correlati... Read More about Extensions to the halo occupation distribution model for more accurate clustering predictions.

The connection between halo concentrations and assembly histories: a probe of gravity? (2019)
Journal Article
Oleśkiewicz, P., Baugh, C. M., & Ludlow, A. (2019). The connection between halo concentrations and assembly histories: a probe of gravity?. Monthly Notices of the Royal Astronomical Society, 489(4), 4658-4668. https://doi.org/10.1093/mnras/stz2359

We use two high resolution N-body simulations, one assuming general relativity and the other the Hu-Sawicki form of f(R) gravity with |f¯R|=10−6⁠, to investigate the concentration–formation time relation of dark matter haloes. We assign haloes to log... Read More about The connection between halo concentrations and assembly histories: a probe of gravity?.

Euclid preparation : III. Galaxy cluster detection in the wide photometric survey, performance and algorithm selection (2019)
Journal Article
Adam, R., Vannier, M., Maurogordato, S., Biviano, A., Adami, C., Ascaso, B., Bellagamba, F., Benoist, C., Cappi, A., Díaz-Sánchez, A., Durret, F., Farrens, S., Gonzalez, A., Iovino, A., Licitra, R., Maturi, M., Mei, S., Merson, A., Munari, E., Pelló, R., …Zamorani, G. (2019). Euclid preparation : III. Galaxy cluster detection in the wide photometric survey, performance and algorithm selection. Astronomy & Astrophysics, 627, Article A23. https://doi.org/10.1051/0004-6361/201935088

Galaxy cluster counts in bins of mass and redshift have been shown to be a competitive probe to test cosmological models. This method requires an efficient blind detection of clusters from surveys with a well-known selection function and robust mass... Read More about Euclid preparation : III. Galaxy cluster detection in the wide photometric survey, performance and algorithm selection.

The evolution of the UV-to-mm extragalactic background light: evidence for a top-heavy initial mass function? (2019)
Journal Article
Cowley, W. I., Lacey, C. G., Baugh, C. M., Cole, S., Frenk, C. S., & Lagos, C. D. P. (2019). The evolution of the UV-to-mm extragalactic background light: evidence for a top-heavy initial mass function?. Monthly Notices of the Royal Astronomical Society, 487(3), 3082-3101. https://doi.org/10.1093/mnras/stz1398

We present predictions for the UV-to-mm extragalactic background light (EBL) from a recent version of the GALFORM semi-analytical model of galaxy formation which invokes a top-heavy stellar initial mass function (IMF) for galaxies undergoing dynamica... Read More about The evolution of the UV-to-mm extragalactic background light: evidence for a top-heavy initial mass function?.

Linear bias forecasts for emission line cosmological surveys (2019)
Journal Article
Merson, A., Smith, A., Benson, A., Wang, Y., & Baugh, C. (2019). Linear bias forecasts for emission line cosmological surveys. Monthly Notices of the Royal Astronomical Society, 486(4), 5737-5765. https://doi.org/10.1093/mnras/stz1204

We forecast the linear bias for Hα-emitting galaxies at high redshift. To simulate a Euclid-like and a WFIRST-like survey, we place galaxies into a large-volume dark matter halo lightcone by sampling a library of luminosity-dependent halo occupation... Read More about Linear bias forecasts for emission line cosmological surveys.

The evolution of SMBH spin and AGN luminosities for z < 6 within a semi-analytic model of galaxy formation (2019)
Journal Article
Griffin, A. J., Lacey, C. G., Gonzalez-Perez, V., del P Lagos, C., Baugh, C. M., & Fanidakis, N. (2019). The evolution of SMBH spin and AGN luminosities for z < 6 within a semi-analytic model of galaxy formation. Monthly Notices of the Royal Astronomical Society, 487(1), 198-227. https://doi.org/10.1093/mnras/stz1216

Understanding how Active Galactic Nuclei (AGN) evolve through cosmic time allows us to probe the physical processes that control their evolution. We use an updated model for the evolution of masses and spins of supermassive black holes (SMBHs), coupl... Read More about The evolution of SMBH spin and AGN luminosities for z < 6 within a semi-analytic model of galaxy formation.

A new approach to finding galaxy groups using Markov Clustering (2019)
Journal Article
Stothert, L., Norberg, P., & Baugh, C. (2019). A new approach to finding galaxy groups using Markov Clustering. Monthly Notices of the Royal Astronomical Society: Letters, 485(1), L126-L130. https://doi.org/10.1093/mnrasl/slz045

We present a proof of concept of a new galaxy group finder method, Markov graph CLustering (MCL) that naturally handles probabilistic linking criteria. We introduce a new figure of merit, the variation of information (VI) statistic, used to optimize... Read More about A new approach to finding galaxy groups using Markov Clustering.

Lyα emitters in a cosmological volume I: the impact of radiative transfer (2019)
Journal Article
Gurung-López, S., Orsi, Á. A., Bonoli, S., Baugh, C. M., & Lacey, C. G. (2019). Lyα emitters in a cosmological volume I: the impact of radiative transfer. Monthly Notices of the Royal Astronomical Society, 486(2), 1882-1906. https://doi.org/10.1093/mnras/stz838

Lyman-α emitters (LAEs) are a promising target to probe the large scale structure of the Universe at high redshifts, z ≳ 2. However, their detection is sensitive to radiative transfer effects that depend on local astrophysical conditions. Thus, model... Read More about Lyα emitters in a cosmological volume I: the impact of radiative transfer.

The Effect of Assembly Bias on Redshift Space Distortions (2019)
Journal Article
Padilla, N., Contreras, S., Zehavi, I., Baugh, C., & Norberg, P. (2019). The Effect of Assembly Bias on Redshift Space Distortions. Monthly Notices of the Royal Astronomical Society, 486(1), 582-595. https://doi.org/10.1093/mnras/stz824

We study potential systematic effects of assembly bias on cosmological parameter constraints from redshift space distortion measurements. We use a semi-analytic galaxy formation model applied to the Millennium N-body WMAP-7 simulation to study the ef... Read More about The Effect of Assembly Bias on Redshift Space Distortions.

Correcting for fibre assignment incompleteness in the DESI Bright Galaxy Survey (2019)
Journal Article
Smith, A., He, J.-H., Cole, S., Stothert, L., Norberg, P., Baugh, C., Bianchi, D., Wilson, M. J., Brooks, D., Forero-Romero, J. E., Moustakas, J., Percival, W. J., Tarle, G., & Wechsler, R. H. (2019). Correcting for fibre assignment incompleteness in the DESI Bright Galaxy Survey. Monthly Notices of the Royal Astronomical Society, 484(1), 1285-1300. https://doi.org/10.1093/mnras/stz059

The Dark Energy Spectroscopic Instrument (DESI) Bright Galaxy Survey (BGS) will be a survey of bright, low-redshift galaxies, which is planned to cover an area of ∼14000 square degrees in three passes. Each pass will cover the survey area with ∼2000... Read More about Correcting for fibre assignment incompleteness in the DESI Bright Galaxy Survey.