Results 51 to 60 of about 34,781 (306)
Dwarf Cepheids in the Carina Dwarf Spheroidal Galaxy [PDF]
The Astronomical Journal, 1998 20 pages of text, 7 ...
Mateo, Mario +2 more
openaire +2 more sources
Effective J -factors for Milky Way dwarf spheroidal galaxies with velocity-dependent annihilation [PDF]
, 2019 We calculate the effective $J$-factors, which determine the strength of indirect detection signals from dark matter annihilation, for 25 dwarf spheroidal galaxies (dSphs).
K. Boddy +4 more
semanticscholar +1 more source
Looking for axion dark matter in dwarf spheroidal galaxies [PDF]
Physical Review D, 2018 We study the extent to which the decay of cold dark matter axions can be probed with forthcoming radio telescopes such as the Square Kilometer Array (SKA).
A. Caputo, C. P. Garay, S. Witte
semanticscholar +1 more source
EPJ Web of Conferences, 2012 While recent sky surveys have uncovered large numbers of ever fainter Milky Way satellites, their classification as star clusters, low-luminosity galaxies, or tidal overdensities remains often unclear. Likewise, their contributions to the build-up of the
Lépine S., Koch A., Çalışkan Ş.
doaj +1 more source
Dwarf Spheroidal Satellite Formation in a Reionized Local Group [PDF]
, 2014 Dwarf spheroidal satellite galaxies have emerged a powerful probe of small-scale dark matter clustering and of cosmic reionization. They exhibit structural and chemical continuity with dwarf irregular galaxies in the field and with spheroidal galaxies in
Bromm, Volker, Milosavljevic, Milos
core +1 more source
A VIRIAL CORE IN THE SCULPTOR DWARF SPHEROIDAL GALAXY [PDF]
The Astrophysical Journal, 2012 4 pages, 2 figures, ApJL ...
Agnello, A., Evans, N. W.
openaire +2 more sources
On the Dynamical Heating of Dwarf Galaxies in a Fuzzy Dark Matter Halo
The Astrophysical Journal, 2023 Fuzzy dark matter (FDM), consisting of ultralight bosons, is an intriguing alternative to cold dark matter. Numerical simulations solving the Schrödinger–Poisson (SP) equation, which governs FDM dynamics, show that FDM halos consist of a central ...
Dhruba Dutta Chowdhury +5 more
doaj +1 more source
Action-based dynamical models of dwarf spheroidal galaxies: application to Fornax [PDF]
Monthly notices of the Royal Astronomical Society, 2018 We present new dynamical models of dwarf spheroidal galaxies (dSphs) in which both the stellar component and the dark halo are described by analytic distribution functions that depend on the action integrals.
R. Pascale +3 more
semanticscholar +1 more source
THE CHEMICAL EVOLUTION OF THE DRACO DWARF SPHEROIDAL GALAXY [PDF]
The Astrophysical Journal, 2009 We present an abundance analysis based on high resolution spectra of 8 stars selected to span the full range in metallicity in the Draco dwarf spheroidal galaxy. We find [Fe/H] for the sample stars ranges from -1.5 to -3.0 dex. Combining our sample with previously published work for a total of 14 luminous Draco giants, we show that the abundance ratios
Cohen, Judith G., Huang, Wenjin
openaire +3 more sources
The Chemical Signature of a Relic Star Cluster in the Sextans Dwarf Spheroidal Galaxy - Implications for Near-Field Cosmology [PDF]
, 2012 We present tentative evidence for the existence of a dissolved star cluster at [Fe/H]=-2.7 in the Sextans dwarf spheroidal galaxy. We use the technique of chemical tagging to identify stars that are highly clustered in a multi-dimensional chemical ...
Bland-Hawthorn, Joss +3 more
core +2 more sources