Skip to main content

Research Repository

Advanced Search

Professor Carlos Frenk's Outputs (558)

Ghostly Galaxies: Accretion-dominated Stellar Systems in Low-mass Dark Matter Halos (2023)
Journal Article
Wang, C.-W., Cooper, A. P., Bose, S., Frenk, C. S., & Hellwing, W. A. (2023). Ghostly Galaxies: Accretion-dominated Stellar Systems in Low-mass Dark Matter Halos. Astrophysical Journal, 958(2), Article 166. https://doi.org/10.3847/1538-4357/ad011d

Wide-area deep imaging surveys have discovered large numbers of extremely low surface brightness (LSB) dwarf galaxies, which challenge galaxy formation theory and, potentially, offer new constraints on the nature of dark matter. Here we discuss one a... Read More about Ghostly Galaxies: Accretion-dominated Stellar Systems in Low-mass Dark Matter Halos.

Distinct distributions of elliptical and disk galaxies across the Local Supercluster as a ΛCDM prediction (2023)
Journal Article
Sawala, T., Frenk, C., Jasche, J., Johansson, P. H., & Lavaux, G. (2024). Distinct distributions of elliptical and disk galaxies across the Local Supercluster as a ΛCDM prediction. Nature Astronomy, 8(2), 247-255. https://doi.org/10.1038/s41550-023-02130-6

Galaxies of different types are not equally distributed in the Local Universe. In particular, the supergalactic plane is prominent among the brightest ellipticals, but inconspicuous among the brightest disk galaxies. This striking difference provides... Read More about Distinct distributions of elliptical and disk galaxies across the Local Supercluster as a ΛCDM prediction.

The FLAMINGO project: revisiting the S8 tension and the role of baryonic physics (2023)
Journal Article
Elbers, W., Helly, J., Frenk, C., McCarthy, I. G., Salcido, J., Schaye, J., …Upadhye, A. (2023). The FLAMINGO project: revisiting the S8 tension and the role of baryonic physics. Monthly Notices of the Royal Astronomical Society, 526(4), 5494–5519. https://doi.org/10.1093/mnras/stad3107

A number of recent studies have found evidence for a tension between observations of large-scale structure (LSS) and the predictions of the standard model of cosmology with the cosmological parameters fit to the cosmic microwave background (CMB). The... Read More about The FLAMINGO project: revisiting the S8 tension and the role of baryonic physics.

Where shadows lie: reconstruction of anisotropies in the neutrino sky (2023)
Journal Article
Elbers, W., Frenk, C. S., Jenkins, A., Li, B., Pascoli, S., Jasche, J., …Springel, V. (2023). Where shadows lie: reconstruction of anisotropies in the neutrino sky. Journal of Cosmology and Astroparticle Physics, 2023(10), Article 010. https://doi.org/10.1088/1475-7516/2023/10/010

The Cosmic Neutrino Background (CNB) encodes a wealth of information, but has not yet been observed directly. To determine the prospects of detection and to study its information content, we reconstruct the phase-space distribution of local relic neu... Read More about Where shadows lie: reconstruction of anisotropies in the neutrino sky.

The impact of the Large Magellanic Cloud on dark matter direct detection signals (2023)
Journal Article
Smith-Orlik, A., Ronaghi, N., Bozorgnia, N., Cautun, M., Fattahi, A., Besla, G., …Peter, A. H. (2023). The impact of the Large Magellanic Cloud on dark matter direct detection signals. Journal of Cosmology and Astroparticle Physics, 2023(10), Article 070. https://doi.org/10.1088/1475-7516/2023/10/070

We study the effect of the Large Magellanic Cloud (LMC) on the dark matter (DM) distribution in the Solar neighborhood, utilizing the Auriga magneto-hydrodynamical simulations of Milky Way (MW) analogues that have an LMC-like system. We extract the l... Read More about The impact of the Large Magellanic Cloud on dark matter direct detection signals.

Unraveling the Complexity of Dwarf Galaxy Dynamics: A Study of Binary Orbital Motions (2023)
Journal Article
Wang, W., Zhu, L., Jing, Y., Grand, R. J. J., Li, Z., Fu, X., …Frenk, C. (2023). Unraveling the Complexity of Dwarf Galaxy Dynamics: A Study of Binary Orbital Motions. Astrophysical Journal, 956(2), Article 91. https://doi.org/10.3847/1538-4357/acf314

We investigate the impact of binary orbital motions on the dynamical modeling of dwarf galaxies with intrinsic line-of-sight velocity dispersions ( σvr ) of 1–9 km s−1. Using dwarf galaxies from the auriga level-2 and level-3 simulations, we apply th... Read More about Unraveling the Complexity of Dwarf Galaxy Dynamics: A Study of Binary Orbital Motions.

The FLAMINGO project: cosmological hydrodynamical simulations for large-scale structure and galaxy cluster surveys (2023)
Journal Article
Schaye, J., Kugel, R., Schaller, M., Helly, . J. C., Braspenning, J., Elbers, W., …Nobels, F. S. J. (2023). The FLAMINGO project: cosmological hydrodynamical simulations for large-scale structure and galaxy cluster surveys. Monthly Notices of the Royal Astronomical Society, 526(4), 4978–5020. https://doi.org/10.1093/mnras/stad2419

We introduce the Virgo Consortium’s FLAMINGO suite of hydrodynamical simulations for cosmology and galaxy cluster physics. To ensure the simulations are sufficiently realistic for studies of large-scale structure, the subgrid prescriptions for stella... Read More about The FLAMINGO project: cosmological hydrodynamical simulations for large-scale structure and galaxy cluster surveys.

The MillenniumTNG Project: the impact of baryons and massive neutrinos on high-resolution weak gravitational lensing convergence maps (2023)
Journal Article
Ferlito, F., Springel, V., Davies, C. T., Hernández-Aguayo, C., Pakmor, R., Barrera, M., White, S. D. M., Delgado, A. M., Hadzhiyska, B., Hernquist, L., Kannan, R., Bose, S., & Frenk, C. (2023). The MillenniumTNG Project: the impact of baryons and massive neutrinos on high-resolution weak gravitational lensing convergence maps. Monthly Notices of the Royal Astronomical Society, 524(4), 5591-5606. https://doi.org/10.1093/mnras/stad2205

We study weak gravitational lensing convergence maps produced from the MILLENNIUM TNG simulations by direct projection of the mass distribution on the past backwards lightcone of a fiducial observer. We explore the lensing maps over a large dynamic r... Read More about The MillenniumTNG Project: the impact of baryons and massive neutrinos on high-resolution weak gravitational lensing convergence maps.

The MillenniumTNG project: the galaxy population at z ≥ 8 (2023)
Journal Article
Kannan, R., Springel, V., Hernquist, L., Pakmor, R., Delgado, A. M., Hadzhiyska, B., Hernández-Aguayo, C., Barrera, M., Ferlito, F., Bose, S., White, S. D. M., Frenk, C., Smith, A., & Garaldi, E. (2023). The MillenniumTNG project: the galaxy population at z ≥ 8. Monthly Notices of the Royal Astronomical Society, 524(2), 2594-2605. https://doi.org/10.1093/mnras/stac3743

The early release science results from JWST have yielded an unexpected abundance of high-redshift luminous galaxies that seems to be in tension with current theories of galaxy formation. However, it is currently difficult to draw definitive conclusio... Read More about The MillenniumTNG project: the galaxy population at z ≥ 8.

The MillenniumTNG Project: high-precision predictions for matter clustering and halo statistics (2023)
Journal Article
Hernández-Aguayo, C., Springel, V., Pakmor, R., Barrera, M., Ferlito, F., White, S. D. M., Hernquist, L., Hadzhiyska, B., Delgado, A. M., Kannan, R., Bose, S., & Frenk, C. (2023). The MillenniumTNG Project: high-precision predictions for matter clustering and halo statistics. Monthly Notices of the Royal Astronomical Society, 524(2), 2556-2578. https://doi.org/10.1093/mnras/stad1657

The MillenniumTNG Project: the large-scale clustering of galaxies (2023)
Journal Article
Bose, S., Hadzhiyska, B., Barrera, M., Delgado, A. M., Ferlito, F., Frenk, C., Hernández-Aguayo, C., Hernquist, L., Kannan, R., Pakmor, R., Springel, V., & White, S. D. M. (2023). The MillenniumTNG Project: the large-scale clustering of galaxies. Monthly Notices of the Royal Astronomical Society, 524(2), 2579-2593. https://doi.org/10.1093/mnras/stad1097

Modern redshift surveys are tasked with mapping out the galaxy distribution over enormous distance scales. Existing hydrodynamical simulations, however, do not reach the volumes needed to match upcoming surveys. We present results for the clustering... Read More about The MillenniumTNG Project: the large-scale clustering of galaxies.

The MillenniumTNG Project: the hydrodynamical full physics simulation and a first look at its galaxy clusters (2023)
Journal Article
Pakmor, R., Springel, V., Coles, J. P., Guillet, T., Pfrommer, C., Bose, S., Barrera, M., Delgado, A. M., Ferlito, F., Frenk, C., Hadzhiyska, B., Hernández-Aguayo, C., Hernquist, L., Kannan, R., & White, S. D. M. (2023). The MillenniumTNG Project: the hydrodynamical full physics simulation and a first look at its galaxy clusters. Monthly Notices of the Royal Astronomical Society, 524(2), 2539-2555. https://doi.org/10.1093/mnras/stac3620

Cosmologicalsimulations are an important theoretical pillar for understanding non-linearstructure formation in our Universe and for relating it to observations on large scales. In several papers, we introduce our MillenniumTNG (MTNG) project that pro... Read More about The MillenniumTNG Project: the hydrodynamical full physics simulation and a first look at its galaxy clusters.

The MillenniumTNG Project: inferring cosmology from galaxy clustering with accelerated N-body scaling and subhalo abundance matching (2023)
Journal Article
Contreras, S., Angulo, R. E., Springel, V., White, S. D. M., Hadzhiyska, B., Hernquist, L., Pakmor, R., Kannan, R., Hernández-Aguayo, C., Barrera, M., Ferlito, F., Delgado, A. M., Bose, S., & Frenk, C. (2023). The MillenniumTNG Project: inferring cosmology from galaxy clustering with accelerated N-body scaling and subhalo abundance matching. Monthly Notices of the Royal Astronomical Society, 524(2), 2489-2506. https://doi.org/10.1093/mnras/stac3699

We introduce a novel technique for constraining cosmological parameters and galaxy assembly bias using non-linear redshift-space clustering of galaxies. We scale cosmological N-body simulations and insert galaxies with the SubHalo Abundance Matching... Read More about The MillenniumTNG Project: inferring cosmology from galaxy clustering with accelerated N-body scaling and subhalo abundance matching.

The MillenniumTNG Project: refining the one-halo model of red and blue galaxies at different redshifts (2023)
Journal Article
Hadzhiyska, B., Hernquist, L., Eisenstein, D., Delgado, A. M., Bose, S., Kannan, R., …Frenk, C. (2023). The MillenniumTNG Project: refining the one-halo model of red and blue galaxies at different redshifts. Monthly Notices of the Royal Astronomical Society, 524(2), 2524–2538. https://doi.org/10.1093/mnras/stad279

Luminous red galaxies (LRGs) and blue star-forming emission-line galaxies (ELGs) are key tracers of large-scale structure used by cosmological surveys. Theoretical predictions for such data are often done via simplistic models for the galaxy–halo con... Read More about The MillenniumTNG Project: refining the one-halo model of red and blue galaxies at different redshifts.

The MillenniumTNG Project: an improved two-halo model for the galaxy–halo connection of red and blue galaxies (2023)
Journal Article
Hadzhiyska, B., Eisenstein, D., Hernquist, L., Pakmor, R., Bose, S., Delgado, A. M., …Barrera, M. (2023). The MillenniumTNG Project: an improved two-halo model for the galaxy–halo connection of red and blue galaxies. Monthly Notices of the Royal Astronomical Society, 524(2), 2507–2523. https://doi.org/10.1093/mnras/stad731

Approximate methods to populate dark-matter haloes with galaxies are of great utility to galaxy surveys. However, the limitations of simple halo occupation models (HODs) preclude a full use of small-scale galaxy clustering data and call for more soph... Read More about The MillenniumTNG Project: an improved two-halo model for the galaxy–halo connection of red and blue galaxies.

The MillenniumTNG Project: Intrinsic alignments of galaxies and halos (2023)
Journal Article
Delgado, A. M., Hadzhiyska, B., Bose, S., Springel, V., Hernquist, L., Barrera, M., Pakmor, R., Ferlito, F., Kannan, R., Hernández-Aguayo, C., White, S. D., & Frenk, C. (2023). The MillenniumTNG Project: Intrinsic alignments of galaxies and halos. Monthly Notices of the Royal Astronomical Society, 523(4), 5899–5914. https://doi.org/10.1093/mnras/stad1781

The intrinsic alignment (IA) of observed galaxy shapes with the underlying cosmic web is a source of contamination in weak lensing surveys. Sensitive methods to identify the IA signal will therefore need to be included in the upcoming weak lensing an... Read More about The MillenniumTNG Project: Intrinsic alignments of galaxies and halos.

The DESI Bright Galaxy Survey: Final Target Selection, Design, and Validation (2023)
Journal Article
Hahn, C., Wilson, M. J., Ruiz-Macias, O., Cole, S., Weinberg, D. H., Moustakas, J., …Zou, H. (2023). The DESI Bright Galaxy Survey: Final Target Selection, Design, and Validation. Astronomical Journal, 165(6), Article 253. https://doi.org/10.3847/1538-3881/accff8

Over the next 5 yr, the Dark Energy Spectroscopic Instrument (DESI) will use 10 spectrographs with 5000 fibers on the 4 m Mayall Telescope at Kitt Peak National Observatory to conduct the first Stage IV dark energy galaxy survey. At z < 0.6, the DESI... Read More about The DESI Bright Galaxy Survey: Final Target Selection, Design, and Validation.

The north–south asymmetry of the ALFALFA H i velocity width function (2023)
Journal Article
Brooks, R. A. N., Oman, K. A., & Frenk, C. S. (2023). The north–south asymmetry of the ALFALFA H i velocity width function. Monthly Notices of the Royal Astronomical Society, 522(3), 4043-4058. https://doi.org/10.1093/mnras/stad1191

The number density of extragalactic 21-cm radio sources as a function of their spectral line widths - the HI width function (HIWF) - is a sensitive tracer of the dark matter halo mass function (HMF). The Lambda cold dark matter model predicts that th... Read More about The north–south asymmetry of the ALFALFA H i velocity width function.

Hidden depths in the local Universe: The Stellar Stream Legacy Survey (2023)
Journal Article
Martínez-Delgado, D., Cooper, A. P., Román, J., Pillepich, A., Erkal, D., Pearson, S., Moustakas, J., Laporte, C. F., Laine, S., Akhlaghi, M., Lang, D., Makarov, D., Borlaff, A. S., Donatiello, G., Pearson, W. J., Miró-Carretero, J., Cuillandre, J.-C., Domínguez, H., Roca-Fàbrega, S., Frenk, C. S., …Valdes, F. G. (2023). Hidden depths in the local Universe: The Stellar Stream Legacy Survey. Astronomy & Astrophysics, 671, Article A141. https://doi.org/10.1051/0004-6361/202245011

Context. Mergers and tidal interactions between massive galaxies and their dwarf satellites are a fundamental prediction of the Lambda-cold dark matter cosmology. These events are thought to provide important observational diagnostics of non-linear s... Read More about Hidden depths in the local Universe: The Stellar Stream Legacy Survey.