All Outputs (192)

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?.

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.

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.

A comparison between semi-analytical gas cooling models and cosmological hydrodynamical simulations (2019)
Journal Article
Hou, J., Lacey, C. G., & Frenk, C. S. (2019). A comparison between semi-analytical gas cooling models and cosmological hydrodynamical simulations. Monthly Notices of the Royal Astronomical Society, 486(2), 1691-1717. https://doi.org/10.1093/mnras/stz730

We compare the mass cooling rates and cumulative cooled-down masses predicted by several semi-analytical (SA) cooling models with cosmological hydrodynamical simulations performed using the AREPO code (ignoring processes such as feedback and chemical... Read More about A comparison between semi-analytical gas cooling models and cosmological hydrodynamical simulations.

The first Super Massive Black Holes: indications from models for future observations (2019)
Journal Article
Amarantidis, S., Afonso, J., Messias, H., Henriques, B., Griffin, A., Lacey, C., …Norris, R. P. (2019). The first Super Massive Black Holes: indications from models for future observations. Monthly Notices of the Royal Astronomical Society, 485(2), 2694-2709. https://doi.org/10.1093/mnras/stz551

We present an exploration of the expected detection of the earliest Active Galactic Nuclei (AGN) in the Universe from state-of-art galaxy formation and evolution semi-analytic models and hydro-dynamical simulations. We estimate the number and radiati... Read More about The first Super Massive Black Holes: indications from models for future observations.

Galaxy formation in the Planck Millennium: the atomic hydrogen content of dark matter haloes (2018)
Journal Article
Baugh, C., Gonzalez-Perez, V., Lagos, C. D., Lacey, C. G., Helly, J. C., Jenkins, A., …Cole, S. (2019). Galaxy formation in the Planck Millennium: the atomic hydrogen content of dark matter haloes. Monthly Notices of the Royal Astronomical Society, 483(4), 4922-4937. https://doi.org/10.1093/mnras/sty3427

We present recalibrations of the GALFORM semi-analytical model of galaxy formation in a new N-body simulation with the Planck cosmology. The Planck Millennium simulation uses more than 128 billion particles to resolve the matter distribution in a cub... Read More about Galaxy formation in the Planck Millennium: the atomic hydrogen content of dark matter haloes.

JINGLE, a JCMT legacy survey of dust and gas for galaxy evolution studies – I. Survey overview and first results (2018)
Journal Article
Saintonge, A., Wilson, C. D., Xiao, T., Lin, L., Hwang, H. S., Tosaki, T., …Zheng, Z. (2018). JINGLE, a JCMT legacy survey of dust and gas for galaxy evolution studies – I. Survey overview and first results. Monthly Notices of the Royal Astronomical Society, 481(3), 3497-3519. https://doi.org/10.1093/mnras/sty2499

JINGLE is a new JCMT legacy survey designed to systematically study the cold interstellar medium of galaxies in the local Universe. As part of the survey we perform 850 µm continuum measurements with SCUBA-2 for a representative sample of 193 Hersche... Read More about JINGLE, a JCMT legacy survey of dust and gas for galaxy evolution studies – I. Survey overview and first results.

The environment of radio galaxies: a signature of AGN feedback at high redshifts (2018)
Journal Article
Izquierdo-Villalba, D., Orsi, Á. A., Bonoli, S., Lacey, C. G., Baugh, C. M., & Griffin, A. J. (2018). The environment of radio galaxies: a signature of AGN feedback at high redshifts. Monthly Notices of the Royal Astronomical Society, 480(1), 1340-1352. https://doi.org/10.1093/mnras/sty1941

We use the semi-analytical model of galaxy formation GALFORM to characterize an indirect signature of active galactic nucleus (AGN) feedback in the environment of radio galaxies at high redshifts. The predicted environment of radio galaxies is denser... Read More about The environment of radio galaxies: a signature of AGN feedback at high redshifts.

The Large-scale Effect of Environment on Galactic Conformity (2018)
Journal Article
Sun, S., Guo, Q., Wang, L., Wang, J., Gao, L., Lacey, C., & Pan, J. (2018). The Large-scale Effect of Environment on Galactic Conformity. Monthly Notices of the Royal Astronomical Society, 477(3), 3136-3144. https://doi.org/10.1093/mnras/sty832

We use a volume-limited galaxy sample from the Sloan Digital Sky Survey Data Release 7 to explore the dependence of galactic conformity on the large-scale environment, measured on ∼4 Mpc scales. We find that the star formation activity of neighbour g... Read More about The Large-scale Effect of Environment on Galactic Conformity.

The SCUBA-2 Cosmology Legacy Survey: The EGS deep field - II. Morphological transformation and multiwavelength properties of faint submillimetre galaxies (2018)
Journal Article
Zavala, J., Aretxaga, I., Dunlop, J., Michałowski, M., Hughes, D., Bourne, N., …van der Werf, P. (2018). The SCUBA-2 Cosmology Legacy Survey: The EGS deep field - II. Morphological transformation and multiwavelength properties of faint submillimetre galaxies. Monthly Notices of the Royal Astronomical Society, 475(4), 5585-5602. https://doi.org/10.1093/mnras/sty217

We present a multiwavelength analysis of galaxies selected at 450 and 850 μm from the deepest SCUBA-2 observations in the Extended Groth Strip (EGS) field, which have an average depth of σ450 = 1.9 and σ850 = 0.46 mJy beam− 1 over ∼70 arcmin2. The fi... Read More about The SCUBA-2 Cosmology Legacy Survey: The EGS deep field - II. Morphological transformation and multiwavelength properties of faint submillimetre galaxies.

A new gas cooling model for semi-analytic galaxy formation models (2017)
Journal Article
Hou, J., Lacey, C. G., & Frenk, C. S. (2018). A new gas cooling model for semi-analytic galaxy formation models. Monthly Notices of the Royal Astronomical Society, 475(1), 543-569. https://doi.org/10.1093/mnras/stx3218

Semi-analytic galaxy formation models are widely used to gain insight into the astrophysics of galaxy formation and in model testing, parameter space searching and mock catalogue building. In this work, we present a new model for gas cooling in haloe... Read More about A new gas cooling model for semi-analytic galaxy formation models.

Predictions for deep galaxy surveys with JWST from ΛCDM (2017)
Journal Article
Cowley, W., Baugh, C., Cole, S., Frenk, C., & Lacey, C. (2018). Predictions for deep galaxy surveys with JWST from ΛCDM. Monthly Notices of the Royal Astronomical Society, 474(2), 2352-2372. https://doi.org/10.1093/mnras/stx2897

We present predictions for the outcome of deep galaxy surveys with the James Webb Space Telescope (JWST) obtained from a physical model of galaxy formation in Λ cold dark matter. We use the latest version of the GALFORM model, embedded within a new (... Read More about Predictions for deep galaxy surveys with JWST from ΛCDM.

The host dark matter haloes of [O II] emitters at 0.5 < z < 1.5 (2017)
Journal Article
Gonzalez-Perez, V., Comparat, J., Norberg, P., Baugh, C., Contreras, S., Lacey, C., …Humphries, J. (2018). The host dark matter haloes of [O II] emitters at 0.5 < z < 1.5. Monthly Notices of the Royal Astronomical Society, 474(3), 4024-4038. https://doi.org/10.1093/mnras/stx2807

Emission line galaxies (ELGs) are used in several ongoing and upcoming surveys (SDSSIV/eBOSS, DESI) as tracers of the dark matter distribution. Using a new galaxy formation model, we explore the characteristics of [O II] emitters, which dominate opti... Read More about The host dark matter haloes of [O II] emitters at 0.5 < z < 1.5.

Comparing galaxy formation in semi-analytic models and hydrodynamical simulations (2017)
Journal Article
Mitchell, P. D., Lacey, C. G., Lagos, C. D., Frenk, C. S., Bower, R. G., Cole, S., …Theuns, T. (2018). Comparing galaxy formation in semi-analytic models and hydrodynamical simulations. Monthly Notices of the Royal Astronomical Society, 474(1), 492-521. https://doi.org/10.1093/mnras/stx2770

It is now possible for hydrodynamical simulations to reproduce a representative galaxy population. Accordingly, it is timely to assess critically some of the assumptions of traditional semi-analytic galaxy formation models. We use the EAGLE simulatio... Read More about Comparing galaxy formation in semi-analytic models and hydrodynamical simulations.

The VLA-COSMOS 3 GHz Large Project: AGN and host-galaxy properties out to z ≲ 6 (2017)
Journal Article
Delvecchio, I., Smolčić, V., Zamorani, G., Lagos, C. D. P., Berta, S., Delhaize, J., …Tasca, L. (2017). The VLA-COSMOS 3 GHz Large Project: AGN and host-galaxy properties out to z ≲ 6. Astronomy & Astrophysics, 602, Article A3. https://doi.org/10.1051/0004-6361/201629367

We explore the multiwavelength properties of AGN host galaxies for different classes of radio-selected AGN out to z ≲ 6 via a multiwavelength analysis of about 7700 radio sources in the COSMOS field. The sources were selected with the Very Large Arra... Read More about The VLA-COSMOS 3 GHz Large Project: AGN and host-galaxy properties out to z ≲ 6.

Understanding the non-linear clustering of high-redshift galaxies (2017)
Journal Article
Jose, C., Baugh, C., Lacey, C., & Subramanian, K. (2017). Understanding the non-linear clustering of high-redshift galaxies. Monthly Notices of the Royal Astronomical Society, 469(4), 4428-4436. https://doi.org/10.1093/mnras/stx1014

We incorporate the non-linear clustering of dark matter haloes, as modelled by Jose et al. into the halo model to better understand the clustering of Lyman break galaxies (LBGs) in the redshift range z = 3–5. We find that, with this change, the predi... Read More about Understanding the non-linear clustering of high-redshift galaxies.

Blending bias impacts the host halo masses derived from a cross-correlation analysis of bright submillimetre galaxies (2017)
Journal Article
Cowley, W., Lacey, C., Baugh, C., Cole, S., & Wilkinson, A. (2017). Blending bias impacts the host halo masses derived from a cross-correlation analysis of bright submillimetre galaxies. Monthly Notices of the Royal Astronomical Society, 469(3), 3396-3404. https://doi.org/10.1093/mnras/stx928

Placing bright submillimetre galaxies (SMGs) within the broader context of galaxy formation and evolution requires accurate measurements of their clustering, which can constrain the masses of their host dark matter haloes. Recent work has shown that... Read More about Blending bias impacts the host halo masses derived from a cross-correlation analysis of bright submillimetre galaxies.

The far infra-red SEDs of main sequence and starburst galaxies (2017)
Journal Article
Cowley, W., Béthermin, M., Lagos, C. D. P., Lacey, C., Baugh, C., & Cole, S. (2017). The far infra-red SEDs of main sequence and starburst galaxies. Monthly Notices of the Royal Astronomical Society, 467(1), 1231-1248. https://doi.org/10.1093/mnras/stx165

We compare observed far infrared/sub-millimetre (FIR/sub-mm) galaxy spectral energy distributions (SEDs) of massive galaxies (M⋆ ≳ 1010 h−1 M⊙) derived through a stacking analysis with predictions from a new model of galaxy formation. The FIR SEDs of... Read More about The far infra-red SEDs of main sequence and starburst galaxies.

The SCUBA-2 Cosmology Legacy Survey: 850 μm maps, catalogues and number counts (2016)
Journal Article
Geach, J., Dunlop, J., Halpern, M., Smail, I., van der Werf, P., Alexander, D., …Zemcov, M. (2017). The SCUBA-2 Cosmology Legacy Survey: 850 μm maps, catalogues and number counts. Monthly Notices of the Royal Astronomical Society, 465(2), 1789-1806. https://doi.org/10.1093/mnras/stw2721

We present a catalogue of ∼3000 submillimetre sources detected (≥3.5σ) at 850 μm over ∼5 deg2 surveyed as part of the James Clerk Maxwell Telescope (JCMT) SCUBA-2 Cosmology Legacy Survey (S2CLS). This is the largest survey of its kind at 850 μm, incr... Read More about The SCUBA-2 Cosmology Legacy Survey: 850 μm maps, catalogues and number counts.

The metal enrichment of passive galaxies in cosmological simulations of galaxy formation (2016)
Journal Article
Okamoto, T., Nagashima, M., Lacey, C., & Frenk, C. (2017). The metal enrichment of passive galaxies in cosmological simulations of galaxy formation. Monthly Notices of the Royal Astronomical Society, 464(4), 4866-4874. https://doi.org/10.1093/mnras/stw2729

Massive early-type galaxies have higher metallicities and higher ratios of α elements to iron than their less massive counterparts. Reproducing these correlations has long been a problem for hierarchical galaxy formation theory, both in semi-analytic... Read More about The metal enrichment of passive galaxies in cosmological simulations of galaxy formation.