Results 41 to 50 of about 334,147 (281)
The evolution of dwarf galaxies [PDF]
Astrophysics and Space Science, 1988 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 Astronomical Journal, 2023 We present results from an optical search for Local Group dwarf galaxy candidates associated with the Ultra-Compact High Velocity Clouds (UCHVCs) discovered by the ALFALFA neutral hydrogen survey.
Katherine L. Rhode +7 more
doaj +1 more source
Dancing in the Dark: Uncertainty in Ultrafaint Dwarf Galaxy Predictions from Cosmological Simulations [PDF]
Astrophysical Journal, 2018 The existence of ultrafaint dwarf (UFD) galaxies highlights the need to push our theoretical understanding of galaxies to extremely low mass. We examine the formation of UFDs by twice running a fully cosmological simulation of dwarf galaxies, but varying
F. Munshi +6 more
semanticscholar +1 more source
The feeble giant. Discovery of a large and diffuse Milky Way dwarf galaxy in the constellation of Crater [PDF]
, 2016 We announce the discovery of the Crater 2 dwarf galaxy, identified in imaging data of the VST ATLAS survey. Given its half-light radius of ~1100 pc, Crater 2 is the fourth largest dwarf in the Milky Way, surpassed only by the LMC, SMC and the Sgr dwarf ...
G. Torrealba +3 more
semanticscholar +1 more source
Substructure in Dwarf Galaxies [PDF]
Publications of the Astronomical Society of Australia, 2004 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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THE METALLICITY OF VOID DWARF GALAXIES [PDF]
The Astrophysical Journal, 2014 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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Understanding the shape and diversity of dwarf galaxy rotation curves in ΛCDM [PDF]
, 2016 The shape and wide diversity of dwarf galaxy rotation curves is at apparent odds with dark matter halos in LCDM. We generate mock rotation curve data from dwarf galaxy simulations to show that this owes to bursty star formation driven by stellar feedback.
J. Read +4 more
semanticscholar +1 more source
Non-circular motions and the diversity of dwarf galaxy rotation curves [PDF]
Monthly notices of the Royal Astronomical Society, 2017 We use mock interferometric H I measurements and a conventional tilted-ring modelling procedure to estimate circular velocity curves of dwarf galaxy discs from the APOSTLE suite of Λ cold dark matter cosmological hydrodynamical simulations. The modelling
K. Oman +5 more
semanticscholar +1 more source
Sagittarius: the nearest dwarf galaxy [PDF]
Monthly Notices of the Royal Astronomical Society, 1995 MNRAS in press, 22pp uuencoded PS file, 26 printed figures available on request from gil@ast.cam.ac ...
Rodrigo Ibata, G. Gilmore, M. Irwin
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From tidal dwarf galaxies to satellite galaxies [PDF]
Astronomy & Astrophysics, 2006 Accepted for publication in A&A. Shortened abstract below, full version in the paper.
Bournaud, Frédéric, Duc, Pierre-Alain
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