Results 71 to 80 of about 1,735 (217)

The PAndAS view of the Andromeda satellite system - II. Detailed properties of 23 M31 dwarf spheroidal galaxies [PDF]

open access: yes, 2016
We present a comprehensive analysis of the structural properties and luminosities of the 23 dwarf spheroidal galaxies that fall within the footprint of the Pan-Andromeda Archaeological Survey (PAndAS). These dwarf galaxies represent the large majority of
Irwin, Michael   +28 more
core   +3 more sources

Zinc abundances in the Sculptor dwarf spheroidal galaxy, [PDF]

open access: yesAstronomy & Astrophysics, 2017
From ESO VLT/FLAMES/GIRAFFE spectra, abundance measurements of Zn have been made in ≈100 individual red giant branch (RGB) stars in the Sculptor dwarf spheroidal galaxy. This is the largest sample of individual Zn abundance measurements within a stellar system beyond the Milky Way.
Skuladottir, A.   +4 more
openaire   +3 more sources

Local Dwarf Spheroidal Galaxies and their Histories [PDF]

open access: yes, 2002
In the first part of this review, an assessment of the possible contribution of disrupted dwarf Spheroidal (dSph) galaxies to the formation the Galactic halo is presented.
Da Costa, Gary
core  

Resonant stripping as the origin of dwarf spheroidal galaxies [PDF]

open access: yes, 2019
Dwarf spheroidal galaxies are the most dark-matter-dominated systems in the nearby Universe(1-3) and their origin is one of the outstanding puzzles of how galaxies form.
Besla, Gurtina   +3 more
core   +1 more source

A systematic study of hidden sector dark matter: application to the gamma-ray and antiproton excesses

open access: yesJournal of High Energy Physics, 2020
In hidden sector models, dark matter does not directly couple to the particle content of the Standard Model, strongly suppressing rates at direct detection experiments, while still allowing for large signals from annihilation.
Dan Hooper   +4 more
doaj   +1 more source

Why Are There Dwarf Spheroidal Galaxies?

open access: yesThe Astrophysical Journal, 2001
4 ApJ pages, submitted to ApJ ...
openaire   +2 more sources

Radio-Frequency Searches for Dark Matter in Dwarf Galaxies

open access: yesGalaxies, 2019
Dwarf spheroidal galaxies have long been discussed as optimal targets for indirect dark matter searches. However, the majority of such studies have been conducted with gamma-ray instruments.
Geoff Beck
doaj   +1 more source

Extreme Tidal Stripping May Explain the Overmassive Black Hole in Leo I: A Proof of Concept

open access: yesThe Astrophysical Journal Letters, 2023
A recent study found dynamical evidence of a supermassive black hole of ∼3 × 10 ^6 M _⊙ at the center of Leo I, the most distant dwarf spheroidal galaxy of the Milky Way. This black hole, comparable in mass to the Milky Way’s Sgr A*, places the system >2
Fabio Pacucci, Yueying Ni, Abraham Loeb
doaj   +1 more source

STELLAR KINEMATICS OF THE ANDROMEDA II DWARF SPHEROIDAL GALAXY [PDF]

open access: yesThe Astrophysical Journal, 2012
14 pages, 10 figures, 4 tables, accepted for publication in ...
Ho, Nhung   +9 more
openaire   +5 more sources

The blue plume population in dwarf spheroidal galaxies [PDF]

open access: yes, 2007
Aims.Blue stragglers (BSS) in the Milky Way field and globular/open clusters are thought to be the product of either primordial or collisional binary systems.
Y. Momany   +5 more
core   +1 more source

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