Results 31 to 40 of about 64,574 (197)
The Faintest Dwarf Galaxies [PDF]
The lowest luminosity ([Formula: see text] L[Formula: see text]) Milky Way satellite galaxies represent the extreme lower limit of the galaxy luminosity function. These ultra-faint dwarfs are the oldest, most dark matter–dominated, most metal-poor, and least chemically evolved stellar systems known.
openaire +3 more sources
The evolution of dwarf galaxies [PDF]
We propose an evolutionary model for dwarf galaxies in Which initially metal-poor gas-rich dwarf irregular (dI) galaxies evolve through bursting Blue Compact Dwarf(BCD) stages and eventually fade from the BCD phase to become dwarf ellipticals (dE). During the bursting phase the surface brightness of the galaxy increases rapidly due to enhanced OB star ...
S. Phillips, Jonathan Ivor Davies
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The PAndAS View of the Andromeda Satellite System. IV. Global Properties
We build a statistical framework to infer the global properties of the satellite system of the Andromeda galaxy (M31) from the properties of individual dwarf galaxies located in the Pan-Andromeda Archaelogical Survey (PAndAS) and the previously ...
Amandine Doliva-Dolinsky+10 more
doaj +1 more source
The Evolutionary Status of Isolated Dwarf Irregular Galaxies II. Star Formation Histories and Gas Depletion [PDF]
The results of UBV and H alpha imaging of a large sample of isolated dwarf irregular galaxies are interpreted in the context of composite stellar population models.
Arimoto N.+12 more
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Substructure in Dwarf Galaxies [PDF]
AbstractRecent years have seen a series of large-scale photometric surveys with the aim of detecting substructure in nearby dwarf galaxies. Some of these objects display a varying distribution of each stellar population, reflecting their star formation histories.
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Local Group Dwarf Galaxies: Nature And Nurture [PDF]
We investigate the formation and evolution of dwarf galaxies in a high resolution, hydrodynamical cosmological simulation of a Milky Way sized halo and its environment.
Annibali+63 more
core +1 more source
THE METALLICITY OF VOID DWARF GALAXIES [PDF]
The current Lambda CDM cosmological model predicts that galaxy evolution proceeds more slowly in lower density environments, suggesting that voids are a prime location to search for relatively pristine galaxies that are representative of the building blocks of early massive galaxies.
K. Kreckel+4 more
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Target Selection and Sample Characterization for the DESI LOW-Z Secondary Target Program
We introduce the DESI LOW- Z Secondary Target Survey, which combines the wide-area capabilities of the Dark Energy Spectroscopic Instrument (DESI) with an efficient, low-redshift target selection method.
Elise Darragh-Ford+41 more
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Morphological transformation of dwarf galaxies in the Local Group [PDF]
In the Local Group there are three main types of dwarf galaxies: Dwarf Irregulars, Dwarf Spheroidals, and Dwarf Ellipticals. Intermediate/transitional types are present as well.
Carraro, Giovanni
core +1 more source
From tidal dwarf galaxies to satellite galaxies [PDF]
Accepted for publication in A&A. Shortened abstract below, full version in the paper.
Bournaud, Frédéric, Duc, Pierre-Alain
openaire +5 more sources