Professor Cedric Lacey's Outputs (192)

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.

The evolution of the stellar mass versus halo mass relationship (2015)
Journal Article
Mitchell, P. D., Lacey, C. G., Baugh, C. M., & Cole, S. (2016). The evolution of the stellar mass versus halo mass relationship. Monthly Notices of the Royal Astronomical Society, 456(2), 1459-1483. https://doi.org/10.1093/mnras/stv2741

We present an analysis of the predictions made by the GALFORM semi-analytic galaxy formation model for the evolution of the relationship between stellar mass and halo mass. We show that for the standard implementations of supernova feedback and gas r... Read More about The evolution of the stellar mass versus halo mass relationship.

Erratum: "HerMES: ALMA Imaging of Herschel-selected Dusty Star-forming Galaxies" (2015, ApJ, 812, 43) (2015)
Journal Article
Bussmann, R., Riechers, D., Fialkov, A., Scudder, J., Hayward, C., Cowley, W., …Wardlow, J. (2015). Erratum: "HerMES: ALMA Imaging of Herschel-selected Dusty Star-forming Galaxies" (2015, ApJ, 812, 43). Astrophysical Journal, 815(2), Article 135. https://doi.org/10.1088/0004-637x/815/2/135

The original published article omitted the final 6 panels of Figure 2. In addition, the original article included an older version of Figure 3 that does not have source labels shown in each panel.

A hybrid multiresolution scheme to efficiently model the structure of reionization on the largest scales (2015)
Journal Article
Kim, H., Wyithe, J., Park, J., Poole, G., Lacey, C., & Baugh, C. (2016). A hybrid multiresolution scheme to efficiently model the structure of reionization on the largest scales. Monthly Notices of the Royal Astronomical Society, 455(4), 4498-4511. https://doi.org/10.1093/mnras/stv2623

Redshifted 21-cm measurements of the structure of ionized regions that grow during reionization promise to provide a new probe of early galaxy and structure formation. One of the challenges of modelling reionization is to account both for the subhalo... Read More about A hybrid multiresolution scheme to efficiently model the structure of reionization on the largest scales.

Galaxy and mass assembly (GAMA): projected galaxy clustering (2015)
Journal Article
Farrow, D., Cole, S., Norberg, P., Metcalfe, N., Baldry, I., Bland-Hawthorn, J., …Sridhar, S. (2015). Galaxy and mass assembly (GAMA): projected galaxy clustering. Monthly Notices of the Royal Astronomical Society, 454(2), 2120-2145. https://doi.org/10.1093/mnras/stv2075

We measure the projected two-point correlation function of galaxies in the 180 deg2 equatorial regions of the GAMA II survey, for four different redshift slices between z = 0.0 and 0.5. To do this, we further develop the Cole method of producing suit... Read More about Galaxy and mass assembly (GAMA): projected galaxy clustering.

HerMES: ALMA Imaging of Herschel-selected Dusty Star-forming Galaxies (2015)
Journal Article
Bussmann, R., Riechers, D., Fialkov, A., Scudder, J., Hayward, C., Cowley, W., …Wardlow, J. (2015). HerMES: ALMA Imaging of Herschel-selected Dusty Star-forming Galaxies. Astrophysical Journal, 812(1), Article 43. https://doi.org/10.1088/0004-637x/812/1/43

The Herschel Multi-tiered Extragalactic Survey (HerMES) has identified large numbers of dusty star-forming galaxies (DSFGs) over a wide range in redshift. A detailed understanding of these DSFGs is hampered by the limited spatial resolution of Hersch... Read More about HerMES: ALMA Imaging of Herschel-selected Dusty Star-forming Galaxies.

Galaxy And Mass Assembly (GAMA): end of survey report and data release 2 (2015)
Journal Article
Liske, J., Baldry, I., Driver, S., Tuffs, R., Alpaslan, M., Andrae, E., …Wright, A. (2015). Galaxy And Mass Assembly (GAMA): end of survey report and data release 2. Monthly Notices of the Royal Astronomical Society, 452(2), 2087-2126. https://doi.org/10.1093/mnras/stv1436

The Galaxy And Mass Assembly (GAMA) survey is one of the largest contemporary spectroscopic surveys of low redshift galaxies. Covering an area of ∼286 deg2 (split among five survey regions) down to a limiting magnitude of r < 19.8 mag, we have collec... Read More about Galaxy And Mass Assembly (GAMA): end of survey report and data release 2.

A new methodology to test galaxy formation models using the dependence of clustering on stellar mass (2015)
Journal Article
Campbell, D., Baugh, C., Mitchell, P., Helly, J., Gonzalez-Perez, V., Lacey, C., …Farrow, D. (2015). A new methodology to test galaxy formation models using the dependence of clustering on stellar mass. Monthly Notices of the Royal Astronomical Society, 452(1), 852-871. https://doi.org/10.1093/mnras/stv1315

We present predictions for the two-point correlation function of galaxy clustering as a function of stellar mass, computed using two new versions of the GALFORM semi-analytic galaxy formation model. These models make use of a high resolution, large v... Read More about A new methodology to test galaxy formation models using the dependence of clustering on stellar mass.

The star formation and AGN luminosity relation: predictions from a semi-analytical model (2015)
Journal Article
Gutcke, T., Fanidakis, N., Macciò, A., & Lacey, C. (2015). The star formation and AGN luminosity relation: predictions from a semi-analytical model. Monthly Notices of the Royal Astronomical Society, 451(4), 3759-3767. https://doi.org/10.1093/mnras/stv1205

In a universe where active galactic nucleus (AGN) feedback regulates star formation in massive galaxies, a strong correlation between these two quantities is expected. If the gas causing star formation is also responsible for feeding the central blac... Read More about The star formation and AGN luminosity relation: predictions from a semi-analytical model.

Constraining the properties of AGN host galaxies with spectral energy distribution modelling (2015)
Journal Article
Ciesla, L., Charmandaris, V., Georgakakis, A., Bernhard, E., Mitchell, P., Buat, V., …Xilouris, M. (2015). Constraining the properties of AGN host galaxies with spectral energy distribution modelling. Astronomy & Astrophysics, 576, Article A10. https://doi.org/10.1051/0004-6361/201425252

Detailed studies of the spectral energy distribution (SED) of normal galaxies have increasingly been used to understand the physical mechanism dominating their integrated emission, mainly owing to the availability of high quality multi-wavelength dat... Read More about Constraining the properties of AGN host galaxies with spectral energy distribution modelling.