All Outputs (21)

From peculiar morphologies to Hubble-type spirals: the relation between galaxy dynamics and morphology in star-forming galaxies at z ∼ 1.5 (2019)
Journal Article
Gillman, S., Tiley, A., Swinbank, A., Harrison, C., Smail, I., Dudzevičiūtė, U., Sharples, R., Cortese, L., Obreschkow, D., Bower, R., Theuns, T., Cirasuolo, M., Fisher, D., Glazebrook, K., Ibar, E., Mendel, J., & Sweet, S. (2020). From peculiar morphologies to Hubble-type spirals: the relation between galaxy dynamics and morphology in star-forming galaxies at z ∼ 1.5. Monthly Notices of the Royal Astronomical Society, 492(1), 1492-1512. https://doi.org/10.1093/mnras/stz3576

We present an analysis of the gas dynamics of star–forming galaxies at z ∼ 1.5 using data from the KMOS Galaxy Evolution Survey (KGES). We quantify the morphology of the galaxies using HSTCANDELS imaging parametrically and non-parametrically. We comb... Read More about From peculiar morphologies to Hubble-type spirals: the relation between galaxy dynamics and morphology in star-forming galaxies at z ∼ 1.5.

Measuring the temperature and profiles of Ly α absorbers (2019)
Journal Article
Garzilli, A., Theuns, T., & Schaye, J. (2020). Measuring the temperature and profiles of Ly α absorbers. Monthly Notices of the Royal Astronomical Society, 492(2), 2193-2207. https://doi.org/10.1093/mnras/stz3585

The distribution of the absorption line broadening observed in the Lyα forest carries information about the temperature, T, and widths, λF, of the filaments in the intergalactic medium (IGM), and the background hydrogen photo-ionization rate, ΓHI. In... Read More about Measuring the temperature and profiles of Ly α absorbers.

Determining the primordial helium abundance and UV background using fluorescent emission in star-free dark matter haloes (2019)
Journal Article
Sykes, C., Fumagalli, M., Cooke, R., & Theuns, T. (2020). Determining the primordial helium abundance and UV background using fluorescent emission in star-free dark matter haloes. Monthly Notices of the Royal Astronomical Society, 492(2), 2151-2160. https://doi.org/10.1093/mnras/stz3573

Observational measures of the primordial helium mass fraction, YP, are of interest for cosmology and fundamental particle physics. Current measures obtained from HII HII regions agree with the Standard Model prediction to approximately 1% precision,... Read More about Determining the primordial helium abundance and UV background using fluorescent emission in star-free dark matter haloes.

How feedback shapes galaxies: an analytic model (2019)
Journal Article
Salcido, J., Bower, R. G., & Theuns, T. (2020). How feedback shapes galaxies: an analytic model. Monthly Notices of the Royal Astronomical Society, 491(4), 5083-5100. https://doi.org/10.1093/mnras/stz3156

We introduce a simple analytic model of galaxy formation that links the growth of dark matter haloes in a cosmological background to the build-up of stellar mass within them. The model aims to identify the physical processes that drive the galaxy-hal... Read More about How feedback shapes galaxies: an analytic model.

The Iκεα model of feedback-regulated galaxy formation (2019)
Journal Article
Sharma, M., & Theuns, T. (2020). The Iκεα model of feedback-regulated galaxy formation. Monthly Notices of the Royal Astronomical Society, 492(2), 2418-2436. https://doi.org/10.1093/mnras/stz2909

We present the Iκεα model of galaxy formation, in which a galaxy’s star formation rate is set by the balance between energy injected by feedback from massive stars and energy lost by the deepening of the potential of its host dark matter halo due to... Read More about The Iκεα model of feedback-regulated galaxy formation.

The MUSE Ultra Deep Field (MUDF). II. Survey design and the gaseous properties of galaxy groups at 0.5 < z < 1.5 (2019)
Journal Article
Fossati, M., Fumagalli, M., Lofthouse, E., D’Odorico, V., Lusso, E., Cantalupo, S., Cooke, R., Cristiani, S., Haardt, F., Morris, S., Peroux, C., Prichard, L., Rafelski, M., Smail, I., & Theuns, T. (2019). The MUSE Ultra Deep Field (MUDF). II. Survey design and the gaseous properties of galaxy groups at 0.5 < z < 1.5. Monthly Notices of the Royal Astronomical Society, 490(1), 1451-1469. https://doi.org/10.1093/mnras/stz2693

We present the goals, design, and first results of the MUSE Ultra Deep Field (MUDF) survey, a large programme using the Multi Unit Spectroscopic Explorer (MUSE) instrument at the ESO Very Large Telescope. The MUDF survey is collecting ≈150 h on-sourc... Read More about The MUSE Ultra Deep Field (MUDF). II. Survey design and the gaseous properties of galaxy groups at 0.5 < z < 1.5.

The Lyman-α forest as a diagnostic of the nature of the dark matter (2019)
Journal Article
Garzilli, A., Magalich, A., Theuns, T., Frenk, C. S., Weniger, C., Ruchayskiy, O., & Boyarsky, A. (2019). The Lyman-α forest as a diagnostic of the nature of the dark matter. Monthly Notices of the Royal Astronomical Society, 489(3), 3456-3471. https://doi.org/10.1093/mnras/stz2188

The observed Lyman-α flux power spectrum (FPS) is suppressed on scales below ∼ 30 km s−1. This cutoff could be due to the high temperature, T0, and pressure, p0, of the absorbing gas or, alternatively, it could reflect the free streaming of dark matt... Read More about The Lyman-α forest as a diagnostic of the nature of the dark matter.

Paths to quiescence: gaseous feeding, morphology and star-formation histories of galaxies from the HST+MUSE Ultra Deep Field (2019)
Other
Fossati, M., Arrigoni Battaia, F., Bielby, R., D'Odorico, V., Dayal, P., Estrada-Carpenter, V., Fumagalli, M., Lofthouse, E., Lusso, E., Morris, S. L., Papovich, C., Peroux, C., Pirzkal, N., Prichard, L., Rafelski, M., Revalski, M., & Theuns, T. (2019). Paths to quiescence: gaseous feeding, morphology and star-formation histories of galaxies from the HST+MUSE Ultra Deep Field

An Evolving and Mass-dependent σsSFR–M ⋆ Relation for Galaxies (2019)
Journal Article
Katsianis, A., Zheng, X., Gonzalez, V., Blanc, G., P. Lagos, C. D., Davies, L. J., Camps, P., Trčka, A., Baes, M., Schaye, J., Trayford, J. W., Theuns, T., & Stalevski, M. (2019). An Evolving and Mass-dependent σsSFR–M ⋆ Relation for Galaxies. Astrophysical Journal, 879(1), Article 11. https://doi.org/10.3847/1538-4357/ab1f8d

The scatter (σsSFR) of the specific star formation rates of galaxies is a measure of the diversity in their star formation histories (SFHs) at a given mass. In this paper, we employ the Evolution and Assembly of GaLaxies and their Environments (EAGLE... Read More about An Evolving and Mass-dependent σsSFR–M ⋆ Relation for Galaxies.

The nature of sub-millimeter and highly star-forming galaxies in the eagle simulation (2019)
Journal Article
McAlpine, S., Smail, I., Bower, R. G., Swinbank, A., Trayford, J. W., Theuns, T., Baes, M., Camps, P., Crain, R. A., & Schaye, J. (2019). The nature of sub-millimeter and highly star-forming galaxies in the eagle simulation. Monthly Notices of the Royal Astronomical Society, 488(2), 2440-2454. https://doi.org/10.1093/mnras/stz1692

We exploit eagle, a cosmological hydrodynamical simulation, to reproduce the selection of the observed sub-millimeter (submm) galaxy population by selecting the model galaxies at z ≥ 1 with mock submm fluxes S850µm ≥ 1 mJy. We find a reasonable agree... Read More about The nature of sub-millimeter and highly star-forming galaxies in the eagle simulation.

Linking gas and galaxies at high redshift: MUSE surveys the environments of six damped Lyα systems at z ≈ 3 (2019)
Journal Article
Mackenzie, R., Fumagalli, M., Theuns, T., Hatton, D. J., Garel, T., Cantalupo, S., Christensen, L., Fynbo, J. P., Kanekar, N., Møller, P., O’Meara, J., Prochaska, J. X., Rafelski, M., Shanks, T., & Trayford, J. (2019). Linking gas and galaxies at high redshift: MUSE surveys the environments of six damped Lyα systems at z ≈ 3. Monthly Notices of the Royal Astronomical Society, 487(4), 5070-5096. https://doi.org/10.1093/mnras/stz1501

We present results from a survey of galaxies in the elds of six z 3 Damped Lyman systems (DLAs) using the Multi Unit Spectroscopic Explorer (MUSE) at the Very Large Telescope (VLT). We report a high detection rate of up to 80% of galaxies within 1000... Read More about Linking gas and galaxies at high redshift: MUSE surveys the environments of six damped Lyα systems at z ≈ 3.

Fluorescent rings in star-free dark matter haloes (2019)
Journal Article
Sykes, C., Fumagalli, M., Cooke, R., Theuns, T., & Benítez–Llambay, A. (2019). Fluorescent rings in star-free dark matter haloes. Monthly Notices of the Royal Astronomical Society, 487(1), 609-621. https://doi.org/10.1093/mnras/stz1234

Photoheating of the gas in low-mass dark matter (DM) haloes prevents baryons from cooling, leaving the haloes free of stars. Gas in these ‘dark’ haloes remains exposed to the ultraviolet background (UVB), and so is expected to emit via fluorescent re... Read More about Fluorescent rings in star-free dark matter haloes.

Simulating the Dark Matter Decay Signal from the Perseus Galaxy Cluster (2019)
Journal Article
Lovell, M. R., Iakubovskyi, D., Barnes, D., Bose, S., Frenk, C. S., Theuns, T., & Hellwing, W. A. (2019). Simulating the Dark Matter Decay Signal from the Perseus Galaxy Cluster. Astrophysical Journal Letters, 875(2), Article L24. https://doi.org/10.3847/2041-8213/ab13ac

the C-EAGLE simulations of galaxy clusters to predict the flux, width, and shape of a dark matter decay line, paying particular attention to the unexplained 3.55keV line detected in the spectra of some galaxies and clusters, and the upcoming XRISM X... Read More about Simulating the Dark Matter Decay Signal from the Perseus Galaxy Cluster.

The Dynamics and Distribution of Angular Momentum in HiZELS Star – Forming Galaxies at z = 0.8 – 3.3 (2019)
Journal Article
Gillman, S., Swinbank, A., Tiley, A., Harrison, C., Smail, I., Dudzevičiūtė, U., Sharples, R., Best, P., Bower, R., Cochrane, R., Fisher, D., Geach, J., Glazebrook, K., Ibar, E., Molina, J., Obreschkow, D., Schaller, M., Sobral, D., Sweet, S., Trayford, J., & Theuns, T. (2019). The Dynamics and Distribution of Angular Momentum in HiZELS Star – Forming Galaxies at z = 0.8 – 3.3. Monthly Notices of the Royal Astronomical Society, 486(1), 175-194. https://doi.org/10.1093/mnras/stz765

We present adaptive optics assisted integral field spectroscopy of 34 star–forming galaxies at z = 0.8–3.3 selected from the HiZELS narrow-band survey. We measure the kinematics of the ionised interstellar medium on ∼1 kpc scales, and show that the g... Read More about The Dynamics and Distribution of Angular Momentum in HiZELS Star – Forming Galaxies at z = 0.8 – 3.3.

The signal of decaying dark matter with hydrodynamical simulations (2019)
Journal Article
Lovell, M. R., Barnes, D., Bahé, Y., Schaye, J., Schaller, M., Theuns, T., Bose, S., Crain, R. A., Vecchia, C. D., Frenk, C. S., Hellwing, W., Kay, S. T., Ludlow, A. D., & Bower, R. G. (2019). The signal of decaying dark matter with hydrodynamical simulations. Monthly Notices of the Royal Astronomical Society, 485(3), 4071-4089. https://doi.org/10.1093/mnras/stz691

Dark matter particles may decay, emitting photons. Drawing on the EAGLE family of hydrodynamic simulations of galaxy formation – including the APOSTLE and C-EAGLE simulations – we assess the systematic uncertainties and scatter on the decay flux from... Read More about The signal of decaying dark matter with hydrodynamical simulations.

The MUSE Ultra Deep Field (MUDF). I. Discovery of a group of Lyα nebulae associated with a bright z ≈ 3.23 quasar pair (2019)
Journal Article
Lusso, E., Fumagalli, M., Fossati, M., Mackenzie, R., Bielby, R., Battaia, F. A., Cantalupo, S., Cooke, R., Cristiani, S., Dayal, P., D’Odorico, V., Haardt, F., Lofthouse, E., Morris, S., Peroux, C., Prichard, L., Rafelski, M., Simcoe, R., Swinbank, M., & Theuns, T. (2019). The MUSE Ultra Deep Field (MUDF). I. Discovery of a group of Lyα nebulae associated with a bright z ≈ 3.23 quasar pair. Monthly Notices of the Royal Astronomical Society: Letters, 485(1), L62-L67. https://doi.org/10.1093/mnrasl/slz032

We present first results from Multi Unit Spectroscopic Explorer (MUSE) observations at the Very Large Telescope in the MUSE Ultra Deep Field (MUDF), a ≈1.2 × 1.4 arcmin2 region for which we are collecting ≈200 hours of integral field spectroscopy. Th... Read More about The MUSE Ultra Deep Field (MUDF). I. Discovery of a group of Lyα nebulae associated with a bright z ≈ 3.23 quasar pair.

Disruption of satellite galaxies in simulated groups and clusters: the roles of accretion time, baryons, and pre-processing (2019)
Journal Article
Bahé, Y. M., Schaye, J., Barnes, D. J., Dalla Vecchia, C., Kay, S. T., Bower, R. G., …Theuns, T. (2019). Disruption of satellite galaxies in simulated groups and clusters: the roles of accretion time, baryons, and pre-processing. Monthly Notices of the Royal Astronomical Society, 485(2), 2287-2311. https://doi.org/10.1093/mnras/stz361

We investigate the disruption of group and cluster satellite galaxies with total mass (dark matter plus baryons) above 1010M⊙ in the Hydrangea simulations, a suite of 24 high-resolution cosmological hydrodynamical zoom-in simulations based on the EAG... Read More about Disruption of satellite galaxies in simulated groups and clusters: the roles of accretion time, baryons, and pre-processing.

The relationship between the morphology and kinematics of galaxies and its dependence on dark matter halo structure in EAGLE (2019)
Journal Article
Thob, A. C., Crain, R. A., McCarthy, I. G., Schaller, M., Lagos, C. D., Schaye, J., Talens, G. J. J., James, P. A., Theuns, T., & Bower, R. G. (2019). The relationship between the morphology and kinematics of galaxies and its dependence on dark matter halo structure in EAGLE. Monthly Notices of the Royal Astronomical Society, 485(1), 972-987. https://doi.org/10.1093/mnras/stz448

We investigate the connection between the morphology and internal kinematics of the stellar component of central galaxies with mass M⋆ > 109.5 M⊙ in the EAGLE simulations. We compare several kinematic diagnostics commonly used to describe simulated g... Read More about The relationship between the morphology and kinematics of galaxies and its dependence on dark matter halo structure in EAGLE.

The Shapes of the Rotation Curves of Star-forming Galaxies Over the Last ≈ 10 Gyr (2019)
Journal Article
Tiley, A. L., Swinbank, A., Harrison, C., Smail, I., Turner, O., Schaller, M., Stott, J., Sobral, D., Theuns, T., Sharples, R., Gillman, S., Bower, R., Bunker, A., Best, P., Richard, J., Bacon, R., Bureau, M., Cirasuolo, M., & Magdis, G. (2019). The Shapes of the Rotation Curves of Star-forming Galaxies Over the Last ≈ 10 Gyr. Monthly Notices of the Royal Astronomical Society, 485(1), 934-960. https://doi.org/10.1093/mnras/stz428

We analyse maps of the spatially-resolved nebular emission of ≈1500 star-forming galaxies at z ≈ 0.6–2.2 from deep KMOS and MUSE observations to measure the average shape of their rotation curves. We use these to test claims for declining rotation cu... Read More about The Shapes of the Rotation Curves of Star-forming Galaxies Over the Last ≈ 10 Gyr.

Galaxies with monstrous black holes in galaxy cluster environments (2019)
Journal Article
van Son, L. A., Barber, C., Bahé, Y. M., Schaye, J., Barnes, D. J., Crain, R. A., …Vecchia, C. D. (2019). Galaxies with monstrous black holes in galaxy cluster environments. Monthly Notices of the Royal Astronomical Society, 485(1), 396-407. https://doi.org/10.1093/mnras/stz399

Massive early-type galaxies follow a tight relation between the mass of their central supermassive black hole (MBH) and their stellar mass (M⋆). The origin of observed positive outliers from this relation with extremely high MBH (⁠>109M⊙⁠) remains un... Read More about Galaxies with monstrous black holes in galaxy cluster environments.