Results 81 to 90 of about 160,294 (242)
Abundance ratios of red giants in low mass ultra faint dwarf spheroidal galaxies [PDF]
A&A 588, A7 (2016), 2015 Low mass dwarf spheroidal galaxies are key objects for our understanding of the chemical evolution of the pristine Universe and the Local Group of galaxies. Abundance ratios in stars of these objects can be used to better understand their star formation and chemical evolution.
arxiv +1 more source
Assessment of Dark Matter Models Using Dark Matter Correlations across Dwarf Spheroidal Galaxies
Universe, 2022 The predicted size of dark matter substructures in kilo-parsec scales is model-dependent. Therefore, if the correlations between dark matter mass densities as a function of the distances between them are measured via observations, we can scrutinize dark ...
Ahmad Borzou
doaj +1 more source
The effect of tides on the Fornax dwarf spheroidal galaxy [PDF]
Monthly Notices of the Royal Astronomical Society, 2015 19 pages, 16 figures.
Antonio Sollima +3 more
openaire +3 more sources
The Astrophysical Journal, 2022 This paper presents improved constraints on the low-mass stellar initial mass function (IMF) of the Boötes I (Boo I) ultrafaint dwarf galaxy, based on our analysis of recent deep imaging from the Hubble Space Telescope.
Carrie Filion +3 more
doaj +1 more source
Linking dwarf galaxies to halo building blocks with the most metal-poor star in Sculptor
, 2009 Current cosmological models indicate that the Milky Way's stellar halo was assembled from many smaller systems. Based on the apparent absence of the most metal-poor stars in present-day dwarf galaxies, recent studies claimed that the true Galactic ...
A Frebel +32 more
core +1 more source
A VIRIAL CORE IN THE SCULPTOR DWARF SPHEROIDAL GALAXY [PDF]
The Astrophysical Journal, 2012 4 pages, 2 figures, ApJL ...
Nick Evans, Adriano Agnello
openaire +3 more sources
Dwarf spheroidal galaxies and Bose-Einstein condensate dark matter [PDF]
Phys. Rev. D 90, 043517 (2014), 2014 We constrain the parameters of a self-interacting massive dark matter scalar particle in a condensate using the kinematics of the eight brightest dwarf spheroidal satellites of the Milky Way. For the case of a repulsive self-interaction the condensate develops a mass density profile with a characteristic scale radius that is closely related to the ...
arxiv +1 more source
Origin of structural and kinematical properties of the Small Magellanic Cloud
, 2009 We investigate structural, kinematical, and chemical properties of stars and gas in the Small Magellanic Cloud (SMC) interacting with the Large Magellanic Cloud (LMC) and the Galaxy based on a series of self-consistent chemodynamical simulations.
Bekki +13 more
core +1 more source
Dark matter distribution and dynamics of dwarf spheroidal galaxies [PDF]
, 2019 I review the current status of dynamical modelling of dwarf spheroidal galaxies focusing on estimates of their dark matter content. Starting with the simplest methods using the velocity dispersion profiles I discuss the inherent issues of mass-anisotropy degeneracy and contamination by unbound stars.
arxiv +1 more source
FORMATION OF DWARF SPHEROIDAL GALAXIES VIA MERGERS OF DISKY DWARFS [PDF]
The Astrophysical Journal, 2011 6 pages, 2 figures, LaTeX (uses emulateapj.cls). Replaced to match the version accepted for publication in ApJL.
Kazantzidis, S +4 more
openaire +4 more sources