Professor Tom Theuns' Outputs (17)

The evolution of the baryon fraction in halos as a cause of scatter in the galaxy stellar mass in the EAGLE simulation (2018)
Journal Article
Kulier, A., Padilla, N., Schaye, J., Crain, R., Schaller, M., Bower, R., Theuns, T., & Paillas, E. (2019). The evolution of the baryon fraction in halos as a cause of scatter in the galaxy stellar mass in the EAGLE simulation. Monthly Notices of the Royal Astronomical Society, 482(3), 3261-3273. https://doi.org/10.1093/mnras/sty2914

The EAGLE simulation suite has previously been used to investigate the relationship between the stellar mass of galaxies, M*, and the properties of dark matter halos, using the hydrodynamical reference simulation combined with a dark matter only (DMO... Read More about The evolution of the baryon fraction in halos as a cause of scatter in the galaxy stellar mass in the EAGLE simulation.

The star formation rate and stellar content contributions of morphological components in the EAGLE simulations (2018)
Journal Article
Trayford, J., Frenk, C., Theuns, T., Schaye, J., & Correa, C. (2019). The star formation rate and stellar content contributions of morphological components in the EAGLE simulations. Monthly Notices of the Royal Astronomical Society, 483(1), 744-766. https://doi.org/10.1093/mnras/sty2860

The Hubble sequence provides a useful classification of galaxy morphology at low redshift. However, morphologies are not static, but rather evolve as the growth of structure proceeds through mergers, accretion and secular processes. We investigate ho... Read More about The star formation rate and stellar content contributions of morphological components in the EAGLE simulations.

The oxygen abundance gradients in the gas discs of galaxies in the EAGLE simulation (2018)
Journal Article
Tissera, P., Rosas-Guevara, Y., Bower, R., Crain, R., del P Lagos, C., Schaller, M., Schaye, J., & Theuns, T. (2019). The oxygen abundance gradients in the gas discs of galaxies in the EAGLE simulation. Monthly Notices of the Royal Astronomical Society, 482(2), 2208-2221. https://doi.org/10.1093/mnras/sty2817

We use the EAGLE simulations to study the oxygen abundance gradients of gas discs in galaxies within the stellar mass range [109.5, 1010.8] ∼ M⊙ at z = 0. The estimated median oxygen gradient is −0.011 ± 0.002 dex kpc−1, which is shallower than obser... Read More about The oxygen abundance gradients in the gas discs of galaxies in the EAGLE simulation.

The chemical imprint of the bursty nature of Milky Way's progenitors (2018)
Journal Article
Sharma, M., Theuns, T., & Frenk, C. (2019). The chemical imprint of the bursty nature of Milky Way's progenitors. Monthly Notices of the Royal Astronomical Society, 482(1), L145-L149. https://doi.org/10.1093/mnrasl/sly195

Carbon-enhanced metal-poor (CEMP) stars with low abundances of neutron capture elements (CEMP-no stars) are ubiquitous among metal-poor stars in the Milky Way. Recent observations have uncovered their two subgroups that differ in the carbon to magnes... Read More about The chemical imprint of the bursty nature of Milky Way's progenitors.

The rapid growth phase of supermassive black holes (2018)
Journal Article
McAlpine, S., Bower, R. G., Rosario, D. J., Crain, R. A., Schaye, J., & Theuns, T. (2018). The rapid growth phase of supermassive black holes. Monthly Notices of the Royal Astronomical Society, 481(3), 3118-3128. https://doi.org/10.1093/mnras/sty2489

We investigate the rapid growth phase of supermassive black holes (BHs) within the hydrodynamical cosmological EAGLE simulation. This non-linear phase of BH growth occurs within ∼L* galaxies, embedded between two regulatory states of the galaxy host:... Read More about The rapid growth phase of supermassive black holes.

SEAGLE - I: A pipeline for simulating and modeling strong lenses from cosmological hydrodynamic simulations (2018)
Journal Article
Mukherjee, S., Koopmans, L., Metcalf, R., Tessore, N., Tortora, C., Schaller, M., Schaye, J., Crain, R., Vernardos, G., Bellagamba, F., & Theuns, T. (2018). SEAGLE - I: A pipeline for simulating and modeling strong lenses from cosmological hydrodynamic simulations. Monthly Notices of the Royal Astronomical Society, 479(3), 4108-4125. https://doi.org/10.1093/mnras/sty1741

In this paper we introduce the SEAGLE (i.e. Simulating EAGLE LEnses) program, that approaches the study of galaxy formation through strong gravitational lensing, using a suite of high-resolution hydrodynamic simulations, Evolution and Assembly of GaL... Read More about SEAGLE - I: A pipeline for simulating and modeling strong lenses from cosmological hydrodynamic simulations.

The Spectral and Environment Properties of z ∼ 2.0–2.5 Quasar Pairs (2018)
Journal Article
Lusso, E., Fumagalli, M., Rafelski, M., Neeleman, M., Prochaska, J. X., Hennawi, J. F., O’Meara, J. M., & Theuns, T. (2018). The Spectral and Environment Properties of z ∼ 2.0–2.5 Quasar Pairs. Astrophysical Journal, 860(1), Article 41. https://doi.org/10.3847/1538-4357/aac514

We present the first results from our survey of intervening and proximate Lyman limit systems (LLSs) at z ~ 2.0–2.5 using the Wide Field Camera 3 on board the Hubble Space Telescope. The quasars in our sample are projected pairs with proper transvers... Read More about The Spectral and Environment Properties of z ∼ 2.0–2.5 Quasar Pairs.

Evolution of LMC/M33-mass dwarf galaxies in the EAGLE simulation (2018)
Journal Article
Shao, S., Cautun, M., Deason, A., Frenk, C., & Theuns, T. (2018). Evolution of LMC/M33-mass dwarf galaxies in the EAGLE simulation. Monthly Notices of the Royal Astronomical Society, 479(1), 284-296. https://doi.org/10.1093/mnras/sty1470

We investigate the population of dwarf galaxies with stellar masses similar to the Large Magellanic Cloud (LMC) and M33 in the EAGLE galaxy formation simulation. In the field, galaxies reside in haloes with stellar-to-halo mass ratios of 1.03+0.50−0.... Read More about Evolution of LMC/M33-mass dwarf galaxies in the EAGLE simulation.

CEMPlifying reionization (2018)
Journal Article
Sharma, M., Theuns, T., & Frenk, C. (2018). CEMPlifying reionization. Monthly Notices of the Royal Astronomical Society, 47(2), 1638-1650. https://doi.org/10.1093/mnras/sty1319

The massive stars that ionized the Universe have short lifetimes and can only be studied near the time of formation, but any low-mass stars that formed contemporaneously might be observable in the local Universe today. We study the abundance pattern... Read More about CEMPlifying reionization.

Finding the stars that reionized the Universe (2018)
Presentation / Conference Contribution
Sharma, M., Theuns, T., & Frenk, C. (2018, April). Finding the stars that reionized the Universe. Presented at Astrometry and Astrophysics in the Gaia Sky

The origin of diverse α-element abundances in galaxy discs (2018)
Journal Article
Mackereth, J., Crain, R., Schiavon, R., Schaye, J., Theuns, T., & Schaller, M. (2018). The origin of diverse α-element abundances in galaxy discs. Monthly Notices of the Royal Astronomical Society, 477(4), 5072-5089. https://doi.org/10.1093/mnras/sty972

Spectroscopic surveys of the Galaxy reveal that its disc stars exhibit a spread in [α/Fe] at fixed [Fe/H], manifest at some locations as a bimodality. The origin of these diverse, and possibly distinct, stellar populations in the Galactic disc is not... Read More about The origin of diverse α-element abundances in galaxy discs.

The impact of dark energy on galaxy formation. What does the future of our Universe hold? (2018)
Journal Article
Salcido, J., Bower, R., Barnes, L., Lewis, G., Elahi, P., Theuns, T., Schaller, M., Crain, R., & Schaye, J. (2018). The impact of dark energy on galaxy formation. What does the future of our Universe hold?. Monthly Notices of the Royal Astronomical Society, 477(3), 3744-3759. https://doi.org/10.1093/mnras/sty879

We investigate the effect of the accelerated expansion of the Universe due to a cosmological constant, Λ, on the cosmic star formation rate. We utilize hydrodynamical simulations from the eagle suite, comparing a ΛCDM (cold dark matter) Universe to a... Read More about The impact of dark energy on galaxy formation. What does the future of our Universe hold?.

Galaxy Formation Efficiency and the Multiverse Explanation of the Cosmological Constant with EAGLE Simulations (2018)
Journal Article
Barnes, L., Elahi, P., Salcido, J., Bower, R., Lewis, G., Theuns, T., …Schaye, J. (2018). Galaxy Formation Efficiency and the Multiverse Explanation of the Cosmological Constant with EAGLE Simulations. Monthly Notices of the Royal Astronomical Society, 477(3), 3727-3743. https://doi.org/10.1093/mnras/sty846

Models of the very early Universe, including inflationary models, are argued to produce varying universe domains with different values of fundamental constants and cosmic parameters. Using the cosmological hydrodynamical simulation code from the EAGL... Read More about Galaxy Formation Efficiency and the Multiverse Explanation of the Cosmological Constant with EAGLE Simulations.

The duration of reionization constrains the ionizing sources (2018)
Journal Article
Sharma, M., Theuns, T., & Frenk, C. (2018). The duration of reionization constrains the ionizing sources. Monthly Notices of the Royal Astronomical Society: Letters, 477(1), L111-L116. https://doi.org/10.1093/mnrasl/sly052

We investigate how the nature of the galaxies that reionized the Universe affects the duration of reionization. We contrast two sets of models: one in which galaxies on the faint side of the luminosity function dominate the ionizing emissivity, and a... Read More about The duration of reionization constrains the ionizing sources.

The innate origin of radial and vertical gradients in a simulated galaxy disc (2018)
Journal Article
Navarro, J., Yozin, C., Loewen, N., Benítez-Llambay, A., Fattahi, A., Frenk, C., …Theuns, T. (2018). The innate origin of radial and vertical gradients in a simulated galaxy disc. Monthly Notices of the Royal Astronomical Society, 476(3), 3648-3660. https://doi.org/10.1093/mnras/sty497

We examine the origin of radial and vertical gradients in the age/metallicity of the stellar component of a galaxy disc formed in the APOSTLE cosmological hydrodynamical simulations. Some of these gradients resemble those in the Milky Way, where they... Read More about The innate origin of radial and vertical gradients in a simulated galaxy disc.

Examining the effect of galaxy evolution on the stellar-halo mass relation in the EAGLE simulation (2018)
Presentation / Conference Contribution
Kulier, A., Padilla, N., Schaye, J., Crain, R., Schaller, M., Bower, R., Theuns, T., & Paillas, E. (2018, January). Examining the effect of galaxy evolution on the stellar-halo mass relation in the EAGLE simulation. Presented at American Astronomical Society Meeting Abstracts \#231

Data Release of UV to Submillimeter Broadband Fluxes for Simulated Galaxies from the EAGLE Project (2018)
Journal Article
Camps, P., Trc̆ka, A., Trayford, J., Baes, M., Theuns, T., Crain, R. A., …Schaye, J. (2018). Data Release of UV to Submillimeter Broadband Fluxes for Simulated Galaxies from the EAGLE Project. Astrophysical Journal Supplement, 234(2), Article 20. https://doi.org/10.3847/1538-4365/aaa24c

We present dust-attenuated and dust emission fluxes for sufficiently resolved galaxies in the EAGLE suite of cosmological hydrodynamical simulations, calculated with the SKIRT radiative transfer code. The post-processing procedure includes specific c... Read More about Data Release of UV to Submillimeter Broadband Fluxes for Simulated Galaxies from the EAGLE Project.