The Cusp–Core Problem in Gas-Poor Dwarf Spheroidal Galaxies [PDF]
Galaxies, 2021 This review deals with the inconsistency of inner dark matter density profiles in dwarf galaxies, known as the cusp–core problem. In particular, we aim to focus on gas-poor dwarf galaxies.
Pierre Boldrini
doaj +2 more sources
Tidal Dwarf Galaxies and Missing Baryons [PDF]
Advances in Astronomy, 2010 Tidal dwarf galaxies form during the interaction, collision, or merger of massive spiral galaxies. They can resemble “normal” dwarf galaxies in terms of mass, size, and become dwarf satellites orbiting around their massive progenitor.
Frederic Bournaud
doaj +4 more sources
Search for Ultraheavy Dark Matter from Observations of Dwarf Spheroidal Galaxies with VERITAS [PDF]
The Astrophysical Journal, 2023 Dark matter is a key piece of the current cosmological scenario, with weakly interacting massive particles (WIMPs) a leading dark matter candidate. WIMPs have not been detected in their conventional parameter space (100 GeV ≲ M _χ ≲ 100 TeV), a mass ...
A. Acharyya +53 more
doaj +2 more sources
Dwarf Spheroidal Galaxies : Keystones of Galaxy Evolution [PDF]
Publications of the Astronomical Society of the Pacific, 1994 Dwarf spheroidal galaxies are the most insignificant extragalactic stellar systems in terms of their visibility, but potentially very significant in terms of their role in the formation and evolution of much more luminous galaxies. We discuss the present
Gallagher III, John S. +1 more
core +5 more sources
Decaying dark matter in dwarf spheroidal galaxies: Prospects for x-ray and gamma-ray telescopes [PDF]
Physical Review D, 2021 Dwarf spheroidal galaxies are dark matter dominated systems, and as such, ideal for indirect dark matter searches. If dark matter decays into high-energy photons in the dwarf galaxies, they will be a good target for current and future generations of X ...
Shin’ichiro Ando +14 more
openalex +3 more sources
Space Motions of the Dwarf Spheroidal Galaxies Draco and Sculptor Based on HST Proper Motions with a ∼10 yr Time Baseline [PDF]
, 2017 We present new proper motion (PM) measurements of the dwarf spheroidal galaxies (dSphs) Draco and Sculptor using multiepoch images obtained with the Hubble Space Telescope ACS/WFC.
Sangmo Tony Sohn +8 more
openalex +3 more sources
Search for gamma-ray emission from the nearby dwarf spheroidal galaxies with 9 years of Fermi-LAT data [PDF]
Physical Review D, 2018 In this work, we search for $\gamma$-ray emission from the directions of some nearby Milky Way dwarf spheroidal galaxies (dSphs) and candidates with the publicly-available Pass 8 data of Fermi-LAT.
Chang, Jin +10 more
core +2 more sources
The Effect of Tidal Stripping on Composite Stellar Populations in Dwarf Spheroidal Galaxies [PDF]
Advances in Astronomy, 2010 We use N-body simulations to study the effects of tides on the kinematical structure of satellite galaxies orbiting a Milky Way-like potential. Here we focus on the evolution of a spherical, dark matter dominated satellite, which is modelled with two ...
Laura V. Sales +2 more
doaj +4 more sources
Gravitational tides and dwarf spheroidal galaxies [PDF]
Astronomy & Astrophysics, 2014 The effect of the local environment on the evolution of dwarf spheroidal galaxies is poorly understood. We have undertaken a suite of simulations to investigate the tidal impact of the Milky Way on the chemodynamical evolution of dwarf spheroidals that resemble present day classical dwarfs using the SPH code GEAR.
Matthew Nichols, Yves Revaz, P. Jablonka
openalex +5 more sources
Abundance ratios of red giants in low mass ultra faint dwarf spheroidal galaxies [PDF]
, 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.
Bidin, C. Moni +5 more
core +6 more sources