IQ Collaboratory. III. The Empirical Dust Attenuation Framework—Taking Hydrodynamical Simulations with a Grain of Dust [PDF]
Astrophysical Journal, 2021 We present the empirical dust attenuation (EDA) framework—a flexible prescription for assigning realistic dust attenuation to simulated galaxies based on their physical properties. We use the EDA to forward model synthetic observations for three state-of-
C. Hahn +10 more
semanticscholar +1 more source
The galaxy size to halo spin relation of disc galaxies in cosmological hydrodynamical simulations [PDF]
Monthly notices of the Royal Astronomical Society, 2021 In the standard disc galaxy formation model, the sizes of galactic discs are tightly related to the spin parameters λ of their dark matter haloes. The model has been wildly adopted by various semi-analytical galaxy formation models which have been ...
Hang Yang +6 more
semanticscholar +1 more source
Massive disc galaxies in cosmological hydrodynamical simulations are too dark matter-dominated [PDF]
Astronomy & Astrophysics, 2020 We investigate the disc-halo connection in massive (Mstar/Msun>5e10) disc galaxies from the cosmological hydrodynamical simulations EAGLE and IllustrisTNG, and compare it with that inferred from the study of HI rotation curves in nearby massive spirals ...
A. Marasco +5 more
semanticscholar +2 more sources
Low-surface-brightness Galaxies are Missing in the Observed Stellar Mass Function
The Astrophysical Journal, 2023 We investigate the impact of the surface-brightness (SB) limit on the galaxy stellar mass functions (GSMFs) using galaxy catalogs generated from the Horizon Run 5 ( HR5 ) simulation.
Juhan Kim +10 more
doaj +1 more source
Detectability of embedded protoplanets from hydrodynamical simulations [PDF]
Monthly notices of the Royal Astronomical Society, 2020 We predict magnitudes for young planets embedded in transition discs, still affected by extinction due to material in the disc. We focus on Jupiter-sized planets at a late stage of their formation, when the planet has carved a deep gap in the gas and ...
E. Sanchis +7 more
semanticscholar +1 more source
Galaxy cluster mass estimation with deep learning and hydrodynamical simulations [PDF]
, 2020 We evaluate the ability of Convolutional Neural Networks (CNNs) to predict galaxy cluster masses in the BAHAMAS hydrodynamical simulations. We train four separate single-channel networks using: stellar mass, soft X-ray flux, bolometric X-ray flux, and ...
Ziang Yan +5 more
semanticscholar +1 more source
Magellanic satellites in ΛCDM cosmological hydrodynamical simulations of the Local Group
, 2021 We use the APOSTLE ΛCDM cosmological hydrodynamical simulations of the Local Group to study the recent accretion of massive satellites into the halo of Milky Way (MW)-sized galaxies.
I. Santos-Santos +3 more
semanticscholar +1 more source
The Mass Fractionation of Helium in the Escaping Atmosphere of HD 209458b
The Astrophysical Journal, 2023 The absorption signals of metastable He in HD 209458b and several other exoplanets can be explained via an escaping atmosphere model with a subsolar He/H ratio. The low abundance of helium can be a result of planet formation if there is a small amount of
Lei Xing, Dongdong Yan, Jianheng Guo
doaj +1 more source
The Athena++ Adaptive Mesh Refinement Framework: Multigrid Solvers for Self-gravity
The Astrophysical Journal Supplement Series, 2023 We describe the implementation of multigrid solvers in the Athena++ adaptive mesh refinement (AMR) framework and their application to the solution of the Poisson equation for self-gravity.
Kengo Tomida, James M. Stone
doaj +1 more source
Bubble-wall velocity in local thermal equilibrium: hydrodynamical simulations vs analytical treatment [PDF]
Journal of High Energy PhysicsWe perform real-time hydrodynamical simulations of the growth of bubbles formed during cosmological first-order phase transitions under the assumption of local thermal equilibrium.
T. Krajewski, M. Lewicki, Mateusz Zych
semanticscholar +1 more source