All Outputs (24)

The effect of cosmic web filaments on galaxy evolution (2024)
Journal Article
O'Kane, C. J., Kuchner, U., Gray, M. E., & Aragón-Salamanca, A. (2024). The effect of cosmic web filaments on galaxy evolution. Monthly Notices of the Royal Astronomical Society, 534(3), 1682-1699. https://doi.org/10.1093/mnras/stae2142

Galaxy properties are known to be affected by their environment. This is well established for the extremes of the density scales, between the high-density cluster environment and the low-density field. It is however not fully understood how the inter... Read More about The effect of cosmic web filaments on galaxy evolution.

Reconsidering the dynamical states of galaxy clusters using PCA and UMAP (2024)
Journal Article
Haggar, R., De Luca, F., De Petris, M., Sazonova, E., Taylor, J. E., Knebe, A., …Power, C. (2024). Reconsidering the dynamical states of galaxy clusters using PCA and UMAP. Monthly Notices of the Royal Astronomical Society, 532(1), 1031–1048. https://doi.org/10.1093/mnras/stae1566

Numerous metrics exist to quantify the dynamical state of galaxy clusters, both observationally and within simulations. Many of these correlate strongly with one another, but it is not clear whether all of these measures probe the same intrinsic prop... Read More about Reconsidering the dynamical states of galaxy clusters using PCA and UMAP.

The localization of galaxy groups in close proximity to galaxy clusters using cosmic web nodes (2023)
Journal Article
Cornwell, D. J., Kuchner, U., Gray, M. E., Aragón-Salamanca, A., Pearce, F. R., Cui, W., & Knebe, A. (2024). The localization of galaxy groups in close proximity to galaxy clusters using cosmic web nodes. Monthly Notices of the Royal Astronomical Society, 527(1), 23-34. https://doi.org/10.1093/mnras/stad3205

We investigate the efficacy of using the cosmic web nodes identified by the DisPerSE topological filament finder to systematically identify galaxy groups in the infall regions around massive clusters. The large random motions and infall velocities of... Read More about The localization of galaxy groups in close proximity to galaxy clusters using cosmic web nodes.

The three hundred project: thermodynamical properties, shocks, and gas dynamics in simulated galaxy cluster filaments and their surroundings (2023)
Journal Article
Rost, A. M., Nuza, S. E., Stasyszyn, F., Kuchner, U., Hoeft, M., Welker, C., …Yepes, G. (2024). The three hundred project: thermodynamical properties, shocks, and gas dynamics in simulated galaxy cluster filaments and their surroundings. Monthly Notices of the Royal Astronomical Society, 527(1), 1301-1316. https://doi.org/10.1093/mnras/stad3208

Using cosmological simulations of galaxy cluster regions from THE THREE HUNDRED project, we study the nature of gas in filaments feeding massive clusters. By stacking the diffuse material of filaments throughout the cluster sample, we measure average... Read More about The three hundred project: thermodynamical properties, shocks, and gas dynamics in simulated galaxy cluster filaments and their surroundings.

The probability of identifying the cosmic web environment of galaxies around clusters motivated by the Weave Wide Field Cluster Survey (2023)
Journal Article
Cornwell, D. J., Aragón-Salamanca, A., Kuchner, U., Gray, M. E., Pearce, F. R., & Knebe, A. (2023). The probability of identifying the cosmic web environment of galaxies around clusters motivated by the Weave Wide Field Cluster Survey. Monthly Notices of the Royal Astronomical Society, 524(2), 2148–2160. https://doi.org/10.1093/mnras/stad1949

Upcoming wide-field spectroscopic surveys will observe galaxies in a range of cosmic web environments in and around galaxy clusters. In this paper, we test and quantify how successfully we will be able to identify the environment of individual galaxi... Read More about The probability of identifying the cosmic web environment of galaxies around clusters motivated by the Weave Wide Field Cluster Survey.

Biomodd: The integration of art into transdisciplinary research practices (2023)
Journal Article
Kuchner, U., Nasser, M., Steyaert, P., Maranan, D. S., Birsel, Z., Haines, A., …Vermeulen, A. C. (2023). Biomodd: The integration of art into transdisciplinary research practices. GAiA, 32(1), 144-153. https://doi.org/10.14512/gaia.32.1.12

Biomodd is an artistic project with the potential for supporting transdisciplinary practices in blended virtual and in-person environments. After describing the project components, we discuss the collaborative process of idea generation and participa... Read More about Biomodd: The integration of art into transdisciplinary research practices.

Euclid preparation: XXVI. The Euclid Morphology Challenge: Towards structural parameters for billions of galaxies (2023)
Journal Article
Collaboration, E., Bretonnière, H., Kuchner, U., Huertas-Company, M., Merlin, E., Castellano, M., …Moscardini, L. (2023). Euclid preparation: XXVI. The Euclid Morphology Challenge: Towards structural parameters for billions of galaxies. Astronomy and Astrophysics, 671, Article A102. https://doi.org/10.1051/0004-6361/202245042

The various Euclid imaging surveys will become a reference for studies of galaxy morphology by delivering imaging over an unprecedented area of 15 000 square degrees with high spatial resolution. In order to understand the capabilities of measuring m... Read More about Euclid preparation: XXVI. The Euclid Morphology Challenge: Towards structural parameters for billions of galaxies.

Euclid preparation: XXV. The Euclid Morphology Challenge: Towards model-fitting photometry for billions of galaxies (2023)
Journal Article
Collaboration, E., Merlin, E., Castellano, M., Bretonnière, H., Huertas-Company, M., Kuchner, U., …Ayllon, A. A. (2023). Euclid preparation: XXV. The Euclid Morphology Challenge: Towards model-fitting photometry for billions of galaxies. Astronomy and Astrophysics, 671, Article A101. https://doi.org/10.1051/0004-6361/202245041

The European Space Agency's Euclid mission will provide high-quality imaging for about 1.5 billion galaxies. A software pipeline to automatically process and analyse such a huge amount of data in real time is being developed by the Science Ground Seg... Read More about Euclid preparation: XXV. The Euclid Morphology Challenge: Towards model-fitting photometry for billions of galaxies.

The wide-field, multiplexed, spectroscopic facility WEAVE: Survey design, overview, and simulated implementation (2023)
Journal Article
Jin, S., Trager, S. C., Dalton, G. B., Aguerri, J. A. L., Drew, J. E., Falcón-Barroso, J., …Zurita, C. (2024). The wide-field, multiplexed, spectroscopic facility WEAVE: Survey design, overview, and simulated implementation. Monthly Notices of the Royal Astronomical Society, 530(3), 2688-2730. https://doi.org/10.1093/mnras/stad557

WEAVE, the new wide-field, massively multiplexed spectroscopic survey facility for the William Herschel Telescope, saw first light in late 2022. WEAVE comprises a new 2-deg field-of-view prime-focus corrector system, a nearly 1000-multiplex fibre pos... Read More about The wide-field, multiplexed, spectroscopic facility WEAVE: Survey design, overview, and simulated implementation.

The Three Hundred Project: Connection between star formation quenching and dynamical evolution in and around simulated galaxy clusters (2022)
Journal Article
Hough, T., Cora, S. A., Haggar, R., Vega-Martinez, C., Kuchner, U., Pearce, F., …Yepes, G. (2023). The Three Hundred Project: Connection between star formation quenching and dynamical evolution in and around simulated galaxy clusters. Monthly Notices of the Royal Astronomical Society, 518(2), 2398-2417. https://doi.org/10.1093/mnras/stac3209

In this work, we combine the semi-analytic model of galaxy formation and evolution SAG with the 102 relaxed simulated galaxy clusters from THE THREE HUNDRED project, and we study the link between the quenching of star formation (SF) and the physical... Read More about The Three Hundred Project: Connection between star formation quenching and dynamical evolution in and around simulated galaxy clusters.

The Three Hundred project: Galaxy groups do not survive cluster infall (2022)
Journal Article
Haggar, R., Kuchner, U., Gray, M. E., Pearce, F. R., Knebe, A., Yepes, G., & Cui, W. (2023). The Three Hundred project: Galaxy groups do not survive cluster infall. Monthly Notices of the Royal Astronomical Society, 518(1), 1316-1334. https://doi.org/10.1093/mnras/stac2809

Galaxy clusters grow by accreting galaxies as individual objects, or as members of a galaxy group. These groups can strongly impact galaxy evolution, stripping the gas from galaxies, and enhancing the rate of galaxy mergers. However, it is not clear... Read More about The Three Hundred project: Galaxy groups do not survive cluster infall.

Forecasting the success of the WEAVE Wide-Field Cluster Survey on the extraction of the cosmic web filaments around galaxy clusters (2022)
Journal Article
Cornwell, D. J., Kuchner, U., Aragón-Salamanca, A., Gray, M. E., Pearce, F. R., Aguerri, J. A. L., …Trager, S. C. (2022). Forecasting the success of the WEAVE Wide-Field Cluster Survey on the extraction of the cosmic web filaments around galaxy clusters. Monthly Notices of the Royal Astronomical Society, 517(2), 1678–1694. https://doi.org/10.1093/mnras/stac2777

Next-generation wide-field spectroscopic surveys will observe the infall regions around large numbers of galaxy clusters with high sampling rates for the first time. Here we assess the feasibility of extracting the large-scale cosmic web around clust... Read More about Forecasting the success of the WEAVE Wide-Field Cluster Survey on the extraction of the cosmic web filaments around galaxy clusters.

The Three Hundred project: The gizmo-simba run (2022)
Journal Article
Cui, W., Dave, R., Knebe, A., Rasia, E., Gray, M., Pearce, F., …Gianfagna, G. (2022). The Three Hundred project: The gizmo-simba run. Monthly Notices of the Royal Astronomical Society, 514(1), 977-996. https://doi.org/10.1093/mnras/stac1402

We introduce gizmo-simba, a new suite of galaxy cluster simulations within The Three Hundred project. The Three Hundred consists of zoom re-simulations of 324 clusters with M 200≳ 1014.8, M ⊙ drawn from the MultiDark-Planck N-body simulation, run usi... Read More about The Three Hundred project: The gizmo-simba run.

A Simulation-driven Deep Learning Approach for Separating Mergers and Star-forming Galaxies: The Formation Histories of Clumpy Galaxies in All of the CANDELS Fields (2022)
Journal Article
Ferreira, L., Conselice, C. J., Kuchner, U., & Tohill, C.-B. (2022). A Simulation-driven Deep Learning Approach for Separating Mergers and Star-forming Galaxies: The Formation Histories of Clumpy Galaxies in All of the CANDELS Fields. Astrophysical Journal, 931(1), Article 34. https://doi.org/10.3847/1538-4357/ac66ea

Being able to distinguish between galaxies that have recently undergone major-merger events, or are experiencing intense star formation, is crucial for making progress in our understanding of the formation and evolution of galaxies. As such, we have... Read More about A Simulation-driven Deep Learning Approach for Separating Mergers and Star-forming Galaxies: The Formation Histories of Clumpy Galaxies in All of the CANDELS Fields.

The Value of ArtScience: improving the balance in collaboration practices between artists and scientists can impact knowledge production (2022)
Journal Article
Kuchner, U. (2022). The Value of ArtScience: improving the balance in collaboration practices between artists and scientists can impact knowledge production. Writing Visual Culture, 10.0, 23-42

In a time in which scientific knowledge is in danger of being discredited, we return to the responsibility of art and science. There is widespread optimism that collaborations between artists and scientists can develop solutions to complex problems,... Read More about The Value of ArtScience: improving the balance in collaboration practices between artists and scientists can impact knowledge production.

Euclid preparation: XIII. Forecasts for galaxy morphology with the Euclid Survey using deep generative models (2022)
Journal Article
Bretonnière, H., Huertas-Company, M., Boucaud, A., Lanusse, F., Jullo, E., Merlin, E., …Kuchner, U. (2022). Euclid preparation: XIII. Forecasts for galaxy morphology with the Euclid Survey using deep generative models. Astronomy and Astrophysics, 657, Article A90. https://doi.org/10.1051/0004-6361/202141393

We present a machine learning framework to simulate realistic galaxies for the Euclid Survey, producing more complex and realistic galaxies than the analytical simulations currently used in Euclid. The proposed method combines a control on galaxy sha... Read More about Euclid preparation: XIII. Forecasts for galaxy morphology with the Euclid Survey using deep generative models.

An inventory of galaxies in cosmic filaments feeding galaxy clusters: galaxy groups, backsplash galaxies, and pristine galaxies (2021)
Journal Article
Kuchner, U., Haggar, R., Aragón-Salamanca, A., Pearce, F. R., Gray, M. E., Rost, A., …Yepes, G. (2022). An inventory of galaxies in cosmic filaments feeding galaxy clusters: galaxy groups, backsplash galaxies, and pristine galaxies. Monthly Notices of the Royal Astronomical Society, 510(1), 581-592. https://doi.org/10.1093/mnras/stab3419

Galaxy clusters grow by accreting galaxies from the field and along filaments of the cosmic web. As galaxies are accreted they are affected by their local environment before they enter (pre-processing), and traverse the cluster potential. Observation... Read More about An inventory of galaxies in cosmic filaments feeding galaxy clusters: galaxy groups, backsplash galaxies, and pristine galaxies.

Cosmic filaments in galaxy cluster outskirts: quantifying finding filaments in redshift space (2021)
Journal Article
Kuchner, U., Aragón-Salamanca, A., Rost, A., Pearce, F. R., Gray, M. E., Cui, W., …Yepes, G. (2021). Cosmic filaments in galaxy cluster outskirts: quantifying finding filaments in redshift space. Monthly Notices of the Royal Astronomical Society, 503(2), 2065-2076. https://doi.org/10.1093/mnras/stab567

Inferring line-of-sight distances from redshifts in and around galaxy clusters is complicated by peculiar velocities, a phenomenon known as the "Fingers of God" (FoG). This presents a significant challenge for finding filaments in large observational... Read More about Cosmic filaments in galaxy cluster outskirts: quantifying finding filaments in redshift space.

The threehundred: the structure and properties of cosmic filaments in the outskirts of galaxy clusters (2020)
Journal Article
Rost, A., Kuchner, U., Welker, C., Pearce, F., Stasyszyn, F., Gray, M., …Rasia, E. (2021). The threehundred: the structure and properties of cosmic filaments in the outskirts of galaxy clusters. Monthly Notices of the Royal Astronomical Society, 502(1), 714-727. https://doi.org/10.1093/mnras/staa3792

Galaxy cluster outskirts are described by complex velocity fields induced by diffuse material collapsing towards filaments, gas, and galaxies falling into clusters, and gas shock processes triggered by substructures. A simple scenario that describes... Read More about The threehundred: the structure and properties of cosmic filaments in the outskirts of galaxy clusters.

Mapping and characterization of cosmic filaments in galaxy cluster outskirts: strategies and forecasts for observations from simulations (2020)
Journal Article
Kuchner, U., Aragón-Salamanca, A., Pearce, F. R., Gray, M. E., Rost, A., Mu, C., …Yepes, G. (2020). Mapping and characterization of cosmic filaments in galaxy cluster outskirts: strategies and forecasts for observations from simulations. Monthly Notices of the Royal Astronomical Society, 494(4), 5473-5491. https://doi.org/10.1093/mnras/staa1083

Upcoming wide-field surveys are well-suited to studying the growth of galaxy clusters by tracing galaxy and gas accretion along cosmic filaments. We use hydrodynamic simulations of volumes surrounding 324 clusters from The ThreeHundred project to dev... Read More about Mapping and characterization of cosmic filaments in galaxy cluster outskirts: strategies and forecasts for observations from simulations.