Results 21 to 30 of about 329,423 (212)
Manganese in dwarf spheroidal galaxies [PDF]
Astronomy & Astrophysics, 2012 19 pages, 10 figures, accepted for publication in Astronomy & ...
Mike Irwin +14 more
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DWARF GALAXIES AND THE COSMIC WEB [PDF]
The Astrophysical Journal, 2013 We use a cosmological simulation of the formation of the Local Group of Galaxies to identify a mechanism that enables the removal of baryons from low-mass halos without appealing to feedback or reionization. As the Local Group forms, matter bound to it develops a network of filaments and pancakes.
Benítez-Llambay, Alejandro +6 more
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Star Formation in Isolated Dwarf Galaxies Hosting Tidal Debris: Extending the Dwarf–Dwarf Merger Sequence [PDF]
Astronomical Journal, 2019 Like massive galaxies, dwarf galaxies are expected to undergo major mergers with other dwarfs. However, the end state of these mergers and the role that merging plays in regulating dwarf star formation are uncertain.
Erin Kado-Fong +6 more
semanticscholar +1 more source
Dwarf Galaxies with the Highest Concentration Are Not Thicker than Ordinary Dwarf Galaxies
The Astrophysical Journal, 2023 Abstract The formation mechanism of high-concentration dwarf galaxies is still a mystery. We perform a comparative study of the intrinsic shape of nearby low-mass galaxies with different stellar concentration. The intrinsic shape is parameterized by the intermediate-to-major axis ratios B/A and the minor-to-major axis ratios C/A of ...
Lijun Chen +7 more
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Radio jets from AGNs in dwarf galaxies in the COSMOS survey: mechanical feedback out to redshift ∼3.4 [PDF]
Monthly notices of the Royal Astronomical Society, 2019 Dwarf galaxies are thought to host the remnants of the early Universe seed black holes (BHs) and to be dominated by supernova feedback. However, recent studies suggest that BH feedback could also strongly impact their growth. We report the discovery of
M. Mezcua, H. Suh, F. Civano
semanticscholar +1 more source
Satellites and haloes of dwarf galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2012 We study the abundance of satellite galaxies as a function of primary stellar mass using the SDSS/DR7 spectroscopic catalogue. In contrast with previous studies, which focussed mainly on bright primaries, our central galaxies span a wide range of stellar mass, 10^7.5 < M_*^pri/M_sun < 10^11, from dwarfs to central cluster galaxies.
Sales, L.V. +3 more
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A global analysis of dark matter signals from 27 dwarf spheroidal galaxies using 11 years of Fermi-LAT observations [PDF]
Journal of Cosmology and Astroparticle Physics, 2018 We search for a dark matter signal in 11 years of Fermi-LAT gamma-ray data from 27 Milky Way dwarf spheroidal galaxies with spectroscopically measured J-factors.
S. Hoof, A. Geringer-Sameth, R. Trotta
semanticscholar +1 more source
The Interstellar Medium of Dwarf Galaxies [PDF]
Galaxies, 2022 Dwarf galaxies are by far the most numerous galaxies in the Universe, showing properties that are quite different from those of their larger and more luminous cousins. This review focuses on the physical and chemical properties of the interstellar medium of those dwarfs that are known to host significant amounts of gas and dust. The neutral and ionized
Christian Henkel +2 more
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AGN in dwarf galaxies: frequency, triggering processes and the plausibility of AGN feedback [PDF]
Monthly Notices of the Royal Astronomical Society: Letters, 2019 While active galactic nuclei (AGN) are considered to be key drivers of the evolution of massive galaxies, their potentially significant role in the dwarf-galaxy regime (M* < 109 M⊙) remains largely unexplored. We combine optical and infrared data, from
S. Kaviraj, G. Martin, J. Silk
semanticscholar +1 more source
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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