Results 11 to 20 of about 11,736 (148)

The Cusp–Core Problem in Gas-Poor Dwarf Spheroidal Galaxies

open access: yesGalaxies, 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   +1 more source

Dwarf Spheroidal Galaxies [PDF]

open access: yesSymposium - International Astronomical Union, 1994
Dwarf Spheroidal (dSph) galaxies are the faintest baryonic systems recognized as galaxies. Understanding the structure and stellar populations of these systems is critical for the modelling of their formation and evolution, and by extension, for understanding the general problem of galaxy formation ...
openaire   +1 more source

Dwarf Spheroidal Galaxies in the Virgo Cluster [PDF]

open access: yesThe Astrophysical Journal, 1998
We present a study of the smallest and faintest galaxies found in a very deep photographic R band survey of regions of the Virgo Cluster, totalling over 3 square degrees, made with the UK Schmidt Telescope. The objects we detect have the same physical sizes and surface brightnesses as Local Group dwarf spheroidal galaxies.
Jones, JB   +3 more
openaire   +4 more sources

FORMATION OF DWARF SPHEROIDAL GALAXIES VIA MERGERS OF DISKY DWARFS [PDF]

open access: yesThe Astrophysical Journal, 2011
6 pages, 2 figures, LaTeX (uses emulateapj.cls). Replaced to match the version accepted for publication in ApJL.
Kazantzidis, S   +4 more
openaire   +3 more sources

Dark satellites and the morphology of dwarf galaxies [PDF]

open access: yes, 2012
One of the strongest predictions of the LambdaCDM cosmological model is the presence of dark satellites orbiting all types of galaxies. We focus here on the dynamical effects of such satellites on disky dwarf galaxies, and demonstrate that these ...
Bergvall   +16 more
core   +2 more sources

Dwarf Cepheids in the Carina Dwarf Spheroidal Galaxy [PDF]

open access: yesThe Astronomical Journal, 1998
20 pages of text, 7 ...
Mateo, Mario   +2 more
openaire   +2 more sources

The quest for dark matter in dwarf spheroidal galaxies with the Cherenkov Telescope Array [PDF]

open access: yesEPJ Web of Conferences, 2019
Dwarf spheroidal galaxies are among the best environments that can be studied with Cherenkov telescopes for indirect searches of γ-ray signals coming from dark matter self-interaction (annihilation or decay), due to their proximity and negligible ...
Saturni Francesco G.   +2 more
doaj   +1 more source

Young Globular Clusters and Dwarf Spheroidals [PDF]

open access: yes, 1999
Most of the globular clusters in the main body of the Galactic halo were formed almost simultaneously. However, globular cluster formation in dwarf spheroidal galaxies appears to have extended over a significant fraction of a Hubble time.
Ambartsumian V. A.   +10 more
core   +2 more sources

Globular clusters and dwarf spheroidal galaxies [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society: Letters, 2008
Abstract Traditionally, globular clusters and dwarf spheroidal galaxies have been distinguished by using one or more of the following criteria: (i) mass, (ii) luminosity, (iii) size, (iv) mass-to-light ratio and (v) spread in metallicity.
openaire   +2 more sources

Abundance Analysis of Stars at Large Radius in the Sextans Dwarf Spheroidal Galaxy

open access: yesThe Astrophysical Journal, 2023
We present the stellar parameters and chemical abundances of 30 elements for five stars located at large radii (3.5–10.7 times the half-light radius) in the Sextans dwarf spheroidal galaxy. We selected these stars using proper motions, radial velocities,
Ian U. Roederer   +7 more
doaj   +1 more source

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