Professor Cedric Lacey's Outputs (13)

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.

HELP: XID+, the probabilistic de-blender for Herschel SPIRE maps (2016)
Journal Article
Hurley, P., Oliver, S., Betancourt, M., Clarke, C., Cowley, W., Duivenvoorden, S., …Wang, L. (2017). HELP: XID+, the probabilistic de-blender for Herschel SPIRE maps. Monthly Notices of the Royal Astronomical Society, 464(1), 885-896. https://doi.org/10.1093/mnras/stw2375

We have developed a new prior-based source extraction tool, xid+, to carry out photometry in the Herschel SPIRE (Spectral and Photometric Imaging Receiver) maps at the positions of known sources. xid+ is developed using a probabilistic Bayesian frame... Read More about HELP: XID+, the probabilistic de-blender for Herschel SPIRE maps.

Reionisation in sterile neutrino cosmologies (2016)
Journal Article
Bose, S., Frenk, C., Hou, J., Lacey, C., & Lovell, M. (2016). Reionisation in sterile neutrino cosmologies. Monthly Notices of the Royal Astronomical Society, 463(4), 3848-3859. https://doi.org/10.1093/mnras/stw2288

We investigate the process of reionisation in a model in which the dark matter is a warm elementary particle such as a sterile neutrino. We focus on models that are consistent with the dark matter decay interpretation of the recently detected line at... Read More about Reionisation in sterile neutrino cosmologies.

Constraining SN feedback: a tug of war between reionization and the Milky Way satellites (2016)
Journal Article
Hou, J., Frenk, C., Lacey, C., & Bose, S. (2016). Constraining SN feedback: a tug of war between reionization and the Milky Way satellites. Monthly Notices of the Royal Astronomical Society, 463(2), 1224-1239. https://doi.org/10.1093/mnras/stw2033

Theoretical models of galaxy formation based on the cold dark matter cosmogony typically require strong feedback from supernova (SN) explosions in order to reproduce the Milky Way satellite galaxy luminosity function and the faint end of the field ga... Read More about Constraining SN feedback: a tug of war between reionization and the Milky Way satellites.

The faint end of the 250 μm luminosity function at z < 0.5 (2016)
Journal Article
Wang, L., Norberg, P., Bethermin, M., Bourne, N., Cooray, A., Cowley, W., …Viero, M. (2016). The faint end of the 250 μm luminosity function at z < 0.5. Astronomy & Astrophysics, 592, Article L5. https://doi.org/10.1051/0004-6361/201629076

Aims. We aim to study the 250 μm luminosity function (LF) down to much fainter luminosities than achieved by previous efforts. Methods. We developed a modified stacking method to reconstruct the 250 μm LF using optically selected galaxies from the SD... Read More about The faint end of the 250 μm luminosity function at z < 0.5.

A unified multiwavelength model of galaxy formation (2016)
Journal Article
Lacey, C. G., Baugh, C. M., Frenk, C. S., Benson, A. J., Bower, R. G., Cole, S., …Mitchell, P. D. (2016). A unified multiwavelength model of galaxy formation. Monthly Notices of the Royal Astronomical Society, 462(4), 3854-3911. https://doi.org/10.1093/mnras/stw1888

We present a new version of the GALFORM semi-analytical model of galaxy formation. This brings together several previous developments of GALFORM into a single unified model, including a different initial mass function (IMF) in quiescent star formatio... Read More about A unified multiwavelength model of galaxy formation.

The clustering of dark matter haloes: scale-dependent bias on quasi-linear scales (2016)
Journal Article
Jose, C., Lacey, C., & Baugh, C. (2016). The clustering of dark matter haloes: scale-dependent bias on quasi-linear scales. Monthly Notices of the Royal Astronomical Society, 463(1), 270-281. https://doi.org/10.1093/mnras/stw1702

We investigate the spatial clustering of dark matter halos, collapsing from 1 − 4σ fluctuations, in the redshift range 0 − 5 using N-body simulations. The halo bias of high redshift halos (z ≥ 2) is found to be strongly non-linear and scale-dependent... Read More about The clustering of dark matter haloes: scale-dependent bias on quasi-linear scales.

Galaxies in the EAGLE hydrodynamical simulation and in the Durham and Munich semi-analytical models (2016)
Journal Article
Guo, Q., Gonzalez-Perez, V., Guo, Q., Schaller, M., Furlong, M., Bower, R., …Theuns, T. (2016). Galaxies in the EAGLE hydrodynamical simulation and in the Durham and Munich semi-analytical models. Monthly Notices of the Royal Astronomical Society, 461(4), 3457-3482. https://doi.org/10.1093/mnras/stw1525

We compare global predictions from the EAGLE hydrodynamical simulation, and two semi-analytic (SA) models of galaxy formation, L-GALAXIES and GALFORM. All three models include the key physical processes for the formation and evolution of galaxies and... Read More about Galaxies in the EAGLE hydrodynamical simulation and in the Durham and Munich semi-analytical models.

GAMA/H-ATLAS: common star formation rate indicators and their dependence on galaxy physical parameters (2016)
Journal Article
Wang, L., Norberg, P., Gunawardhana, M., Heinis, S., Baldry, I., Bland-Hawthorn, J., …van der Werf, P. (2016). GAMA/H-ATLAS: common star formation rate indicators and their dependence on galaxy physical parameters. Monthly Notices of the Royal Astronomical Society, 461(2), 1898-1916. https://doi.org/10.1093/mnras/stw1450

We compare common star formation rate (SFR) indicators in the local Universe in the Galaxy and Mass Assembly (GAMA) equatorial fields (∼160 deg2), using ultraviolet (UV) photometry from GALEX, far-infrared and sub-millimetre (sub-mm) photometry from... Read More about GAMA/H-ATLAS: common star formation rate indicators and their dependence on galaxy physical parameters.

The clustering and halo occupation distribution of Lyman-break galaxies at z ˜ 4 (2016)
Journal Article
Park, J., Kim, H., Wyithe, J., Lacey, C., Baugh, C., Barone-Nugent, R., …Bouwens, R. (2016). The clustering and halo occupation distribution of Lyman-break galaxies at z ˜ 4. Monthly Notices of the Royal Astronomical Society, 461(1), 176-189. https://doi.org/10.1093/mnras/stw1316

We investigate the clustering of Lyman-break galaxies (LBGs) at z ∼ 4. Using the hierarchical galaxy formation model GALFORM, we predict, for the first time using a semi-analytical model with feedback from active galactic nuclei (AGN), the angular co... Read More about The clustering and halo occupation distribution of Lyman-break galaxies at z ˜ 4.

The clustering evolution of dusty star-forming galaxies (2016)
Journal Article
Cowley, W., Lacey, C., Baugh, C., & Cole, S. (2016). The clustering evolution of dusty star-forming galaxies. Monthly Notices of the Royal Astronomical Society, 461(2), 1621-1641. https://doi.org/10.1093/mnras/stw1069

We present predictions for the clustering of galaxies selected by their emission at far-infrared (FIR) and sub-millimetre wavelengths. This includes the first predictions for the effect of clustering biases induced by the coarse angular resolution of... Read More about The clustering evolution of dusty star-forming galaxies.

The environments of high-redshift radio galaxies and quasars: probes of protoclusters (2016)
Journal Article
Orsi, Á. A., Fanidakis, N., Lacey, C., & Baugh, C. (2016). The environments of high-redshift radio galaxies and quasars: probes of protoclusters. Monthly Notices of the Royal Astronomical Society, 456(4), 3827-3839. https://doi.org/10.1093/mnras/stv2919

We use the GALFORM semi-analytical model to study high-density regions traced by radio galaxies and quasars at high redshifts. We explore the impact that baryonic physics has upon the properties of galaxies in these environments. Star-forming emissio... Read More about The environments of high-redshift radio galaxies and quasars: probes of protoclusters.