Results 141 to 150 of about 12,545 (267)

Self-interacting Dark Matter Interpretation of Crater II

The Astrophysical Journal Letters
The satellite galaxy Crater II of the Milky Way is extremely cold and exceptionally diffuse. These unusual properties are challenging to understand in the standard model of cold dark matter.
Xingyu Zhang, Hai-Bo Yu, Daneng Yang, Haipeng An   +3 more
doaj   +1 more source

A dynamical study of the Sextans dwarf spheroidal galaxy [PDF]

, 1994
J. C. Hargreaves, G. Gilmore, M. J. Irwin, D. Carter   +3 more
openalex   +1 more source

The Origin of High-velocity Stars Considering the Impact of the Large Magellanic Cloud

The Astronomical Journal
Utilizing astrometric parameters sourced from Gaia Data Release 3 and radial velocities obtained from various spectroscopic surveys, we identify 519 high-velocity stars (HiVels) with a total velocity in the Galactocentric rest frame greater than 70% of ...
Jiwei Liao, Cuihua Du, Mingji Deng, Dashuang Ye, Hefan Li, Yang Huang, Jianrong Shi, Jun Ma   +7 more
doaj   +1 more source

Probing late-time annihilations of oscillating asymmetric dark matter via rotation curves of galaxies

European Physical Journal C: Particles and Fields
In this paper, we explore the Oscillating Asymmetric Dark Matter (OADM) model to address the core-cusp problem, aiming to resolve the discrepancy between the predictions of the $$\Lambda \textrm{CDM}$$ Λ CDM cosmological model and the observed dark ...
Júlia G. Mamprim, Guillermo Gambini, Luan B. Arbeletche, Marcos Olegario, Vitor de Souza   +4 more
doaj   +1 more source

WFPC2 Observations of the Ursa Minor Dwarf Spheroidal Galaxy [PDF]

, 1999
Kenneth J. Mighell, Christopher J. Burke
openalex   +1 more source

Assessing the Association between the Globular Cluster NGC 4147 and the Sagittarius Dwarf Galaxy

The Astronomical Journal
The potential association of the globular cluster (GC) NGC 4147 with the Sagittarius (Sgr) dwarf spheroidal galaxy has been proposed due to their comparable locations and radial velocities. However, there are still debates about this connection.
Ying-Hua Zhang, Jundan Nie, Hao Tian, Chao Liu   +3 more
doaj   +1 more source

[ITAL]Hubble[/ITAL] [ITAL]Space[/ITAL] [ITAL]Telescope[/ITAL] Observations of the Draco Dwarf Spheroidal Galaxy [PDF]

, 1998
Carl J. Grillmair, J. R. Mould, Jon A. Holtzman, Guy Worthey, G. E. Ballester, Christopher J. Burrows, J. T. Clarke, David Crisp, Robin W. Evans, J. S. Gallagher, R. E. Griffiths, J. J. Hester, J. G. Hoessel, Paul A. Scowen, Karl R. Stapelfeldt, John T. Trauger, A. M. Watson, James A. Westphal   +17 more
openalex   +1 more source

A [ITAL]V[/ITAL] and [ITAL]I[/ITAL] CCD Mosaic Survey of the Ursa Minor Dwarf Spheroidal Galaxy [PDF]

, 1998
Jan Kleyna, Margaret J. Geller, Scott J. Kenyon, Michael J. Kurtz, J. R. Thorstensen   +4 more
openalex   +1 more source

Effects of Dark Matter Self-interactions on Sagittarius and its Stream

The Astrophysical Journal
This work explores how assumptions regarding the particle-physics nature of dark matter can alter the evolution of the Sagittarius (Sgr) dwarf spheroidal galaxy and its expansive stellar stream.
Connor Hainje, Oren Slone, Mariangela Lisanti, Denis Erkal   +3 more
doaj   +1 more source

Tidal Disruption and Tails from the Carina Dwarf Spheroidal Galaxy [PDF]

, 1996
J. R. Kuhn, H. A. Smith, Suzanne L. Hawley   +2 more
openalex   +1 more source