Results 21 to 30 of about 11,545 (216)
Dwarf Spheroidal Galaxies [PDF]
Symposium - 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 ...
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The Origin Of Dwarf Spheroidal Galaxies [PDF]
Symposium - International Astronomical Union, 1983 Two dwarf spheroidal galaxies are associated with the Magellanic Stream with their major axes oriented along it. Evidence suggests that all the dwarf spheroidal satellites of the Galaxy belong to one or other of two streams of tidal debris. If this is true the orbits will give the first reliable determination of the total mass of the Galaxy out to 120 ...
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ZIRCONIUM ABUNDANCES IN THE CENTRAL PART OF THE dSph FORNAX GALAXY
Odessa Astronomical Publications, 2017 We derived LTE zirconium abundance in a sample of 81 giant stars in dwarf spheroidal Fornax galaxy. The LTE synthesis was used for this aim. We obtained the lower Zr abundance in Fornax galaxy comparing to the relevant value in the thick/thin disc of the
S. M. Andrievsky +3 more
doaj +1 more source
The Progenitors of Dwarf Spheroidal Galaxies [PDF]
The Astronomical Journal, 2003 Dwarf spheroidal (dSph) galaxies present an evolutionary puzzle that we explore in 40 early- and late-type dwarfs in the Local Group and nearby field. Although dSphs formed stars over extended periods, today all but one are free of detectable interstellar matter (ISM), even in the Fornax dSph, where stars still formed 100 Myr ago.
Grebel, Eva K. +2 more
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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
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FORMATION OF DWARF SPHEROIDAL GALAXIES VIA MERGERS OF DISKY DWARFS [PDF]
The Astrophysical Journal, 2011 We perform collisionless N-body simulations to investigate whether binary mergers between rotationally supported dwarfs can lead to the formation of dwarf spheroidal galaxies (dSphs). Our simulation campaign is based on a hybrid approach combining cosmological simulations and controlled numerical experiments.
Kazantzidis, S +4 more
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Dark satellites and the morphology of dwarf galaxies [PDF]
, 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
Globular clusters and dwarf spheroidal galaxies [PDF]
Monthly 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.
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A VIRIAL CORE IN THE SCULPTOR DWARF SPHEROIDAL GALAXY [PDF]
The Astrophysical Journal, 2012 4 pages, 2 figures, ApJL ...
Agnello, A., Evans, N. W.
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The elusive old population of the dwarf spheroidal galaxy Leo I [PDF]
, 1999 We report the discovery of a significant old population in the dwarf spheroidal (dSph) galaxy Leo I as a result of a wide-area search with the ESO New Technology Telescope.
Bertelli G. +12 more
core +2 more sources