All Outputs (272)

The power spectrum of galaxies from large to small scales: a line-intensity mapping perspective (2025)
Journal Article
Jun, R. L., Theuns, T., Moriwaki, K., & Bose, S. (2025). The power spectrum of galaxies from large to small scales: a line-intensity mapping perspective. Monthly Notices of the Royal Astronomical Society, 540(1), 433-459. https://doi.org/10.1093/mnras/staf647

We present a model for the power spectrum of the density field of galaxies weighted by their star formation rate. This weighting is relevant in line-intensity mapping (lim) when the observed line luminosity is strongly correlated with star formation,... Read More about The power spectrum of galaxies from large to small scales: a line-intensity mapping perspective.

The stellar population of a z ∼ 3.25 Lyα-emitting group associated with a damped Lyα absorber (2024)
Journal Article
Pruto, G., Fumagalli, M., Rafelski, M., Revalski, M., Fossati, M., Mackenzie, R., & Theuns, T. (2024). The stellar population of a z ∼ 3.25 Lyα-emitting group associated with a damped Lyα absorber. Astronomy & Astrophysics, 691, Article A222. https://doi.org/10.1051/0004-6361/202450609

We present near-infrared observations, acquired with the Wide Field Camera 3 (WFC3) on board the Hubble Space Telescope (HST), of a Lyα-emitting double-clumped nebula at z ≈ 3.25 associated with a damped Lyα absorber (DLA). With the WFC3/F160W data w... Read More about The stellar population of a z ∼ 3.25 Lyα-emitting group associated with a damped Lyα absorber.

Realistic simulated galaxies form [α/Fe]–[Fe/H] knees due to a sustained decline in their star formation rates (2024)
Journal Article
Mason, A. C., Crain, R. A., Schiavon, R. P., Weinberg, D. H., Pfeffer, J., Schaye, J., Schaller, M., & Theuns, T. (2024). Realistic simulated galaxies form [α/Fe]–[Fe/H] knees due to a sustained decline in their star formation rates. Monthly Notices of the Royal Astronomical Society, 533(1), 184-200. https://doi.org/10.1093/mnras/stae1743

The metallicity gradients of star-forming regions store information of the assembly history of galaxies (2024)
Journal Article
Jara-Ferreira, F., Tissera, P. B., Sillero, E., Rosas-Guevara, Y., Pedrosa, S. E., De Rossi, M. E., …Bignone, L. (2024). The metallicity gradients of star-forming regions store information of the assembly history of galaxies. Monthly Notices of the Royal Astronomical Society, 530(2), 1369-1385. https://doi.org/10.1093/mnras/stae708

The variations in metallicity and spatial patterns within star-forming regions of galaxies result from diverse physical processes unfolding throughout their evolutionary history, with a particular emphasis on recent events. Analysing MaNGA and EAGLE... Read More about The metallicity gradients of star-forming regions store information of the assembly history of galaxies.

The impact and response of mini-haloes and the interhalo medium on cosmic reionization (2024)
Journal Article
Chan, T. K., Benítez-Llambay, A., Theuns, T., Frenk, C., & Bower, R. (2024). The impact and response of mini-haloes and the interhalo medium on cosmic reionization. Monthly Notices of the Royal Astronomical Society, 528(2), 1296-1326. https://doi.org/10.1093/mnras/stae114

An ionization front (I-front) that propagates through an inhomogeneous medium is slowed down by self-shielding and recombination's. We perform cosmological radiation hydrodynamics simulations of the I-front propagation during the epoch of cosmic reio... Read More about The impact and response of mini-haloes and the interhalo medium on cosmic reionization.

A halo model for cosmological Lyman-limit systems (2023)
Journal Article
Theuns, T., & Keung Chan, T. (2024). A halo model for cosmological Lyman-limit systems. Monthly Notices of the Royal Astronomical Society, 527(1), 689–705. https://doi.org/10.1093/mnras/stad3176

We present an analytical model for cosmological Lyman-limit systems (LLS) that successfully reproduces the observed evolution of the mean free path (λeff) of ionizing photons. The evolution of the co-moving mean free path is predominantly a consequen... Read More about A halo model for cosmological Lyman-limit systems.

Resolving the physics of quasar Ly α nebulae (RePhyNe): I. Constraining quasar host halo masses through circumgalactic medium kinematics (2023)
Journal Article
de Beer, S., Cantalupo, S., Travascio, A., Pezzulli, G., Galbiati, M., Fossati, M., Fumagalli, M., Lazeyras, T., Pensabene, A., Theuns, T., & Wang, W. (2023). Resolving the physics of quasar Ly α nebulae (RePhyNe): I. Constraining quasar host halo masses through circumgalactic medium kinematics. Monthly Notices of the Royal Astronomical Society, 526(2), 1850–1873. https://doi.org/10.1093/mnras/stad2682

Simulations of the reionization of the clumpy intergalactic medium with a novel particle-based two-moment radiative transfer scheme (2023)
Journal Article
Keung Chan, T., Benitez-Llambay, A., Theuns, T., & Frenk, C. (2023). Simulations of the reionization of the clumpy intergalactic medium with a novel particle-based two-moment radiative transfer scheme. Proceedings of the International Astronomical Union, 16(362), 15-20. https://doi.org/10.1017/s1743921322001235

The progress of cosmic reionization depends on the presence of over-dense regions that act as photon sinks. Such sinks may slow down ionization fronts as compared to a uniform intergalactic medium (IGM) by increasing the clumping factor. We present s... Read More about Simulations of the reionization of the clumpy intergalactic medium with a novel particle-based two-moment radiative transfer scheme.

The origin of correlations between mass, metallicity, and morphology in galaxies from the eagle simulation (2022)
Journal Article
Zenocratti, L., De Rossi, M., Theuns, T., & Lara-López, M. (2022). The origin of correlations between mass, metallicity, and morphology in galaxies from the eagle simulation. Monthly Notices of the Royal Astronomical Society, 512(4), 6164-6179. https://doi.org/10.1093/mnras/stac906

Observed and simulated galaxies exhibit correlations between stellar mass, metallicity, and morphology. We use the EAGLE cosmological simulation to examine the origin of these correlations for galaxies in the stellar mass range 109 M M 1010 M, and th... Read More about The origin of correlations between mass, metallicity, and morphology in galaxies from the eagle simulation.

The evolution of the oxygen abundance gradients in star-forming galaxies in the eagle simulations (2021)
Journal Article
Tissera, P. B., Rosas-Guevara, Y., Sillero, E., Pedrosa, S. E., Theuns, T., & Bignone, L. (2022). The evolution of the oxygen abundance gradients in star-forming galaxies in the eagle simulations. Monthly Notices of the Royal Astronomical Society, 511(2), 1667-1684. https://doi.org/10.1093/mnras/stab3644

We analyse the evolution of the oxygen abundance gradient of star-forming galaxies with stellar mass M∗≥109M⊙ in the EAGLE simulation over the redshift range z = [0, 2.5]. We find that the median metallicity gradient of the simulated galaxies is clos... Read More about The evolution of the oxygen abundance gradients in star-forming galaxies in the eagle simulations.

Metal-enriched halo gas across galaxy overdensities over the last 10 billion years (2021)
Journal Article
Dutta, R., Fumagalli, M., Fossati, M., Bielby, R. M., Stott, J. P., Lofthouse, E. K., Cantalupo, S., Cullen, F., Crain, R. A., Tripp, T. M., Prochaska, J. X., Arrigoni Battaia, F., Burchett, J. N., Fynbo, J. P., Murphy, M. T., Schaye, J., Tejos, N., & Theuns, T. (2021). Metal-enriched halo gas across galaxy overdensities over the last 10 billion years. Monthly Notices of the Royal Astronomical Society, 508(3), 4573-4599. https://doi.org/10.1093/mnras/stab2752

We present a study of metal-enriched halo gas traced by Mg II and C IV absorption at z < 2 in the MUSE Analysis of Gas around Galaxies survey and the Quasar Sightline and Galaxy Evolution survey. Using these large and complete galaxy surveys in quasa... Read More about Metal-enriched halo gas across galaxy overdensities over the last 10 billion years.

Smoothed particle radiation hydrodynamics: two-moment method with local Eddington tensor closure (2021)
Journal Article
Chan, T., Theuns, T., Bower, R., & Frenk, C. (2021). Smoothed particle radiation hydrodynamics: two-moment method with local Eddington tensor closure. Monthly Notices of the Royal Astronomical Society, 505(4), 5784-5814. https://doi.org/10.1093/mnras/stab1686

We present a new smoothed particle hydrodynamics-radiative transfer method (SPH-M1RT) that is coupled dynamically with SPH. We implement it in the (task-based parallel) SWIFT galaxy simulation code but it can be straightforwardly implemented in other... Read More about Smoothed particle radiation hydrodynamics: two-moment method with local Eddington tensor closure.

MUSE analysis of gas around galaxies (MAGG) – III. The gas and galaxy environment of z = 3–4.5 quasars (2021)
Journal Article
Fossati, M., Fumagalli, M., Lofthouse, E., Dutta, R., Cantalupo, S., Arrigoni Battaia, F., Fynbo, J., Lusso, E., Murphy, M., Prochaska, J., Theuns, T., & Cooke, R. (2021). MUSE analysis of gas around galaxies (MAGG) – III. The gas and galaxy environment of z = 3–4.5 quasars. Monthly Notices of the Royal Astronomical Society, 503(2), 3044-3064. https://doi.org/10.1093/mnras/stab660

We present a study of the environment of 27 z = 3–4.5 bright quasars from the MUSE Analysis of Gas around Galaxies (MAGG) survey. With medium-depth Multi Unit Spectroscopic Explorer (MUSE) observations (4 h on target per field), we characterize the e... Read More about MUSE analysis of gas around galaxies (MAGG) – III. The gas and galaxy environment of z = 3–4.5 quasars.

The surprising accuracy of isothermal Jeans modelling of self-interacting dark matter density profiles (2020)
Journal Article
Robertson, A., Massey, R., Eke, V., Schaye, J., & Theuns, T. (2021). The surprising accuracy of isothermal Jeans modelling of self-interacting dark matter density profiles. Monthly Notices of the Royal Astronomical Society, 501(3), 4610-5634. https://doi.org/10.1093/mnras/staa3954

Recent claims of observational evidence for self-interacting dark matter (SIDM) have relied on a semi-analytic method for predicting the density profiles of galaxies and galaxy clusters containing SIDM. We present a thorough description of this metho... Read More about The surprising accuracy of isothermal Jeans modelling of self-interacting dark matter density profiles.

Connecting cosmological accretion to strong Lyα absorbers (2020)
Journal Article
Theuns, T. (2021). Connecting cosmological accretion to strong Lyα absorbers. Monthly Notices of the Royal Astronomical Society, 500(2), 2741-2756. https://doi.org/10.1093/mnras/staa3412

We present an analytical model for the cosmological accretion of gas on to dark matter haloes, based on a similarity solution applicable to spherical systems. Performing simplified radiative transfer, we compute how the accreting gas turns increasing... Read More about Connecting cosmological accretion to strong Lyα absorbers.

The ARTEMIS simulations: stellar haloes of Milky Way-mass galaxies (2020)
Journal Article
Font, A., McCarthy, I., Poole-Mckenzie, R., Stafford, S., Brown, S., Schaye, J., Crain, R., & Theuns, T. (2020). The ARTEMIS simulations: stellar haloes of Milky Way-mass galaxies. Monthly Notices of the Royal Astronomical Society, 498(2), 1765-1785. https://doi.org/10.1093/mnras/staa2463

We introduce the Assembly of high-ResoluTion Eagle-simulations of MIlky Way-type galaxieS (ARTEMIS) simulations, a new set of 42 zoomed-in, high-resolution (baryon particle mass of ≈2×104M⊙h−1⁠), hydrodynamical simulations of galaxies residing in hal... Read More about The ARTEMIS simulations: stellar haloes of Milky Way-mass galaxies.

Correlations between mass, stellar kinematics, and gas metallicity in eagle galaxies (2020)
Journal Article
Theuns, T., Lara-López, M., De Rossi, M., & Zenocratti, L. (2020). Correlations between mass, stellar kinematics, and gas metallicity in eagle galaxies. Monthly Notices of the Royal Astronomical Society: Letters, 496(1), L33-L37. https://doi.org/10.1093/mnrasl/slaa085

The metallicity of star-forming gas in galaxies from the EAGLE (Evolution and Assembly of GaLaxies and their Environments) simulations increases with stellar mass. Here, we investigate whether the scatter around this relation correlates with morpholo... Read More about Correlations between mass, stellar kinematics, and gas metallicity in eagle galaxies.

Infrared luminosity functions and dust mass functions in the EAGLE simulation (2020)
Journal Article
Vandenbroucke, B., Vaccari, M., Theuns, T., Marchetti, L., Katsianis, A., Trayford, J., Camps, P., Trčka, A., & Baes, M. (2020). Infrared luminosity functions and dust mass functions in the EAGLE simulation. Monthly Notices of the Royal Astronomical Society, 494(2), 2912-2924. https://doi.org/10.1093/mnras/staa990

We present infrared luminosity functions and dust mass functions for the EAGLE cosmological simulation, based on synthetic multiwavelength observations generated with the SKIRT radiative transfer code. In the local Universe, we reproduce the observed... Read More about Infrared luminosity functions and dust mass functions in the EAGLE simulation.

Constraining structure formation using EDGES (2020)
Journal Article
Leo, M., Theuns, T., Baugh, C. M., Li, B., & Pascoli, S. (2020). Constraining structure formation using EDGES. Journal of Cosmology and Astroparticle Physics, 2020(4), Article 004. https://doi.org/10.1088/1475-7516/2020/04/004

The experiment to detect the global epoch of reionization signature (EDGES) collaboration reported the detection of a line at 78 MHz in the sky-averaged spectrum due to neutral hydrogen (\ion{H}{i}) 21-cm hyperfine absorption of cosmic microwave back... Read More about Constraining structure formation using EDGES.

The high-redshift SFR–M* relation is sensitive to the employed star formation rate and stellar mass indicators: towards addressing the tension between observations and simulations (2020)
Journal Article
Katsianis, A., Gonzalez, V., Barrientos, D., Yang, X., Lagos, C., Schaye, J., Camps, P., Trčka, A., Baes, M., Stalevski, M., Blanc, G., & Theuns, T. (2020). The high-redshift SFR–M* relation is sensitive to the employed star formation rate and stellar mass indicators: towards addressing the tension between observations and simulations. Monthly Notices of the Royal Astronomical Society, 492(4), 5592-5606. https://doi.org/10.1093/mnras/staa157

There is a severe tension between the observed star formation rate (SFR)–stellar mass (M⋆) relations reported by different authors at z = 1–4. In addition, the observations have not been successfully reproduced by state-of-the-art cosmological simula... Read More about The high-redshift SFR–M* relation is sensitive to the employed star formation rate and stellar mass indicators: towards addressing the tension between observations and simulations.