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Galaxy Evolution with Manifold Learning [PDF]
EntropyMatter in the early Universe was nearly uniform, and galaxies emerged through the gravitational growth of small primordial density fluctuations. Astrophysics has been trying to unveil the complex physical phenomena that have caused the formation and ...
Tsutomu T. Takeuchi +2 more
doaj +2 more sources
The Physics of Galaxy Cluster Outskirts [PDF]
Space Science Reviews, 2019 56 pages. Review paper.
S A Walker +2 more
exaly +5 more sources
Modelling galaxy clustering: is new physics needed in galaxy formation models? [PDF]
Monthly Notices of the Royal Astronomical Society, 2009 The clustering amplitude of galaxies depends on their intrinsic luminosity. We compare the properties of publicly available galaxy formation models with clustering measurements from the two-degree field galaxy redshift survey. The model predictions show the same qualitative behaviour as the data but fail to match the observations at the level of ...
Han-Seek Kim +2 more
exaly +4 more sources
The nature of the motions of multiphase filaments in the centers of galaxy clusters
Frontiers in Astronomy and Space Sciences, 2023 The intracluster medium (ICM) in the centers of galaxy clusters is heavily influenced by the “feedback” from supermassive black holes (SMBHs). Feedback can drive turbulence in the ICM and turbulent dissipation can potentially be an important source of ...
Shalini Ganguly +9 more
doaj +1 more source
The physics of galaxy evolution with EAGLE [PDF]
1st AO4ELT conference - Adaptive Optics for Extremely Large Telescopes, 2010 6 pages, 4 Figures, to appear in the proceedings of the AO4ELT meeting held in Paris, 22-26 June ...
Puech, Mathieu +9 more
openaire +4 more sources
Revealing the Galaxy–Halo Connection through Machine Learning
The Astrophysical Journal, 2023 Understanding the connections between galaxy stellar mass, star formation rate, and dark matter halo mass represents a key goal of the theory of galaxy formation. Cosmological simulations that include hydrodynamics, physical treatments of star formation,
Ryan Hausen +7 more
doaj +1 more source
The Physical Properties of the Groups of Galaxies [PDF]
Universe, 2021 Galaxy groups consist of a few tens of galaxies bound in a common gravitational potential [...]
Lorenzo Lovisari, Stefano Ettori
openaire +3 more sources
A Universal Equation to Predict Ωm from Halo and Galaxy Catalogs
The Astrophysical Journal, 2023 We discover analytic equations that can infer the value of Ω _m from the positions and velocity moduli of halo and galaxy catalogs. The equations are derived by combining a tailored graph neural network (GNN) architecture with symbolic regression.
Helen Shao +16 more
doaj +1 more source
A New Stellar Mass Proxy for Subhalo Abundance Matching
The Astrophysical Journal, 2023 Subhalo abundance matching (SHAM) has played an important role in improving our understanding of how galaxies populate their host dark matter halos.
Chen-Yu Chuang, Yen-Ting Lin
doaj +1 more source
The Asymmetry of Galaxies: Physical Morphology for Nearby and High‐Redshift Galaxies [PDF]
The Astrophysical Journal, 2000 We present a detailed study of rotational asymmetry in galaxies for both morphological and physical diagnostic purposes. An unambiguous method for computing asymmetry is developed, robust for both distant and nearby galaxies. By degrading real galaxy images, we test the reliability of this asymmetry measure over a range of observational conditions, e.g.
Conselice, Christopher J. +2 more
openaire +2 more sources