Results 81 to 90 of about 212,400 (210)
DELVE-DEEP Survey: The Faint Satellite System of NGC 55
The Astrophysical JournalWe report the first comprehensive census of the satellite dwarf galaxies around NGC 55 (2.1 Mpc) as a part of the DECam Local Volume Exploration DEEP (DELVE-DEEP) survey. NGC 55 is one of four isolated, Magellanic analogs in the Local Volume around which
Jonah Medoff +26 more
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Why Are There Dwarf Spheroidal Galaxies?
The Astrophysical Journal, 2001 4 ApJ pages, submitted to ApJ ...
openaire +2 more sources
Galaxias Enanas del Grupo Local
Momento, 2009 The satellite galaxies of the Milky Way are very important both for the studies of the formation and evolution of galaxies and for the research on the dark matter problem. In the present review paper some structural properties of the Local Group, as well
A Casallas Lagos +2 more
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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.
Nichols, Matthew +2 more
openaire +5 more sources
A Study of Abundance Patterns in the Sextans and Sculptor Dwarf Spheroidal Galaxies
The Astrophysical JournalIn this work, we employ a multicomponent decomposition model to study the Sextans and Sculptor dwarf spheroidal galaxies, which have distinct evolutionary histories.
Shuaishuai Yang +3 more
doaj +1 more source
Local Dwarf Spheroidal Galaxies and their Histories
, 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 +1 more source
Globular Cluster Distributions as a Dynamical Probe of Dark Matter
The Astrophysical JournalGlobular clusters (GCs) act as massive probe particles traversing the dark matter halos of their host galaxies. Gravitational dynamical friction due to halo particles causes GC orbits to contract over time, providing a beyond-mean field test of the cold ...
Nativ Ben-Yeda, Kfir Blum, Inbar Havilio
doaj +1 more source
Implications of elemental abundances in dwarf spheroidal galaxies [PDF]
Astronomy & Astrophysics, 2006 Unusual elemental abundance patterns observed for stars belonging to nearby dwarf spheroidal (dSph) galaxies are discussed. Analysis of the [alpha/H] vs. [Fe/H] diagrams where alpha represents Mg or average of alpha-elements reveals that Fe from Type Ia supernovae (SNe Ia) does not contribute to the stellar abundances in the dSph galaxies where the ...
openaire +2 more sources
Can Dwarf Spheroidal Galaxies Host a Central Black Hole?
The Astrophysical JournalWe construct mass models of Milky Way dwarf spheroidal galaxies to place constraints on the central black hole masses they can host. We model the galaxies as a three-component system consisting of the stars, dark matter halo, and a central black hole ...
K. Aditya, A. Mangalam
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Impulsive Mixing of Stellar Populations in Dwarf Spheroidal Galaxies
The Astrophysical JournalWe study the response of mono-energetic stellar populations with initially isotropic kinematics to impulsive and adiabatic changes to an underlying dark matter potential.
Raphaël Errani +4 more
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