Results 101 to 110 of about 394,003 (311)
Ultra-light dark matter in ultra-faint dwarf galaxies [PDF]
, 2016 Cold Dark Matter (CDM) models struggle to match the observations at galactic scales. The tension can be reduced either by dramatic baryonic feedback effects or by modifying the particle physics of CDM.
E. Calabrese, D. Spergel
semanticscholar +1 more source
The Disruption of the Sagittarius Dwarf Galaxy [PDF]
The Astrophysical Journal, 1995 Numerical simulations of dwarf spheroidal galaxies undergoing several close encounters with the Milky Way are described. By comparing our models to observed properties of the recently discovered dwarf galaxy in Sagittarius (Sgr), we discuss implications of our results for the formation and evolution of the Milky Way system.
Johnston, Kathryn V. +2 more
openaire +2 more sources
The Astrophysical JournalWe present a 3D shape analysis of both dark matter (DM) and stellar matter (SM) in simulated dwarf galaxies to determine whether stellar shape traces DM shape. Using 80 central and satellite dwarf galaxies from three simulation suites (“Marvelous Massive
Blake Keith +8 more
doaj +1 more source
The mass of dwarf spheroidal galaxies and the missing satellite problem
, 2005 We present the results from a suite of N-body simulations of the tidal stripping of two-component dwarf galaxies comprising some stars and dark matter. We show that recent kinematic data from the local group dwarf spheroidal (dSph) galaxies suggests that
Evans, N. Wyn +4 more
core +1 more source
Dark satellites and the morphology of dwarf galaxies [PDF]
, 2012 One of the strongest predictions of the LambdaCDM cosmological model is the presence of dark satellites orbiting all types of galaxies. We focus here on the dynamical effects of such satellites on disky dwarf galaxies, and demonstrate that these ...
Bergvall +16 more
core +2 more sources
Going, going, gone dark: Quantifying the scatter in the faintest dwarf galaxies [PDF]
, 2017 We predict the stellar mass-halo mass (SMHM) relationship for dwarf galaxies and their satellites residing in halos down to M$_{halo} =$ 10$^7$ M$_{\odot}$ with 10$^4$ M$_{\odot} 10^9$ M$_{\odot}$, the simulated SMHM relationship agrees with literature ...
F. Munshi +5 more
semanticscholar +1 more source
A global analysis of dark matter signals from 27 dwarf spheroidal galaxies using 11 years of Fermi-LAT observations [PDF]
Journal of Cosmology and Astroparticle Physics, 2018 We search for a dark matter signal in 11 years of Fermi-LAT gamma-ray data from 27 Milky Way dwarf spheroidal galaxies with spectroscopically measured J-factors.
S. Hoof, A. Geringer-Sameth, R. Trotta
semanticscholar +1 more source
The Outer Edges of Dwarf Irregular Galaxies: Stars and Gas
, 2002 We have in recent years come to view dwarf galaxy evolution in the broader context of the cosmic evolution of large-scale structure. Dwarf galaxies, as the putative building blocks of hierarchical galaxy formation, and also as the most numerous galaxies ...
Hodge, P. W., Hunter, D. A., Oey, M. S.
core +1 more source
Harassment Origin for Kinematic Substructures in Dwarf Elliptical Galaxies? [PDF]
, 2005 We have run high resolution N-body models simulating the encounter of a dwarf galaxy with a bright elliptical galaxy. The dwarf absorbs orbital angular momentum and shows counter-rotating features in the external regions of the galaxy.
A. C. González-García +38 more
core +3 more sources
The Tucana dwarf spheroidal: a distant backsplash galaxy of M31? [PDF]
, 2023 Isabel Santos-Santos +2 more
openalex +1 more source