Dark matter mass loss in galaxy flybys: dependence on impact parameter [PDF]
Serbian Astronomical Journal, 2022 Galaxy flybys, interactions where two independent halos inter-penetrate but detach at a later time and do not merge, occur frequently at lower redshifts.
Mitrašinović A.
doaj +1 more source
Formation of Transitional cE/UCD Galaxies through Massive/Dwarf Disc Galaxy Mergers
Galaxies, 2023 The dynamics of the merger of a dwarf disc galaxy with a massive spiral galaxy of the Milky Way type were studied in detail. The remnant of such interaction after numerous crossings of the satellite through the disc of the main galaxy was a compact ...
Alexander V. Khoperskov +2 more
doaj +1 more source
Formation of Major Types of Galaxies Based on the Energy Circulation Theory
Reports in Advances of Physical Sciences, 2022 The standard cosmology can answer almost nothing about how the structure of a galaxy is formed. It expects a supermassive black hole at the center and dark matter in the halo to explain the circulation of stars and its velocity.
Shigeto Nagao
doaj +1 more source
Osaka feedback model: isolated disc galaxy simulations [PDF]
Monthly notices of the Royal Astronomical Society, 2019 We study various implementations of supernova feedback model and present the results of our `Osaka feedback model' using isolated galaxy simulations performed by the smoothed particle hydrodynamics (SPH) code {\small GADGET-3}.
I. Shimizu +3 more
semanticscholar +1 more source
A prediction on the age of thick discs as a function of the stellar mass of the host galaxy [PDF]
A&A 645, L13 (2021), 2021 One of the suggested thick disc formation mechanisms is that they were born quickly and in situ from a turbulent clumpy disc. Subsequently, thin discs formed slowly within them from leftovers of the turbulent phase and from material accreted through cold flows and minor mergers. In this letter, I propose an observational test to verify this hypothesis.
arxiv +1 more source
The Diversity of Assembly Histories Leading to Disc Galaxy Formation in a ΛCDM Model [PDF]
Publications Astronomical Society of Australia, 2017 Disc galaxies forming in a LambdaCDM cosmology often experience violent mergers. The fact that disc galaxies are ubiquitous suggests that quiescent histories are not necessary.
A. Font +4 more
semanticscholar +1 more source
The gravitational microlens influence on X-ray spectral line generated by an AGN accretion disc [PDF]
Serbian Astronomical Journal, 2001 The influence of gravitational microlensing on the X-ray spectral line profiles originated from a relativistic accretion disc has been studied. Using a disc model, we show that microlensing can induce noticeable changes in the line shapes when the ...
Popović L.Č. +4 more
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Exploring the mass assembly of the early-type disc galaxy NGC 3115 with MUSE [PDF]
, 2016 We present MUSE integral field spectroscopic data of the S0 galaxy NGC 3115 obtained during the instrument commissioning at the ESO Very Large Telescope (VLT).
A. Gu'erou +5 more
semanticscholar +1 more source
MHD simulations of ram pressure stripping of a disc galaxy [PDF]
, 2017 The removal of the interstellar medium (ISM) of disk galaxies through ram pressure stripping (RPS) has been extensively studied in numerous simulations.
Mariana Ramos-Mart'inez +2 more
semanticscholar +1 more source
Formation and settling of a disc galaxy during the last 8 billion years in a cosmological simulation [PDF]
, 2016 We present results of a high-resolution zoom cosmological simulation of the evolution of a low-mass galaxy with a maximum velocity of V=100 km/s at z=0, using the initial conditions from the AGORA project (Kim et al 2014). The final disc-dominated galaxy
D. Ceverino +3 more
semanticscholar +1 more source