Results 31 to 40 of about 331,024 (213)
Intermediate-mass black holes in dwarf galaxies out to redshift ∼2.4 in the Chandra COSMOS-Legacy Survey [PDF]
, 2018 We present a sample of 40 AGN in dwarf galaxies at redshifts $z \lesssim$ 2.4. The galaxies are drawn from the \textit{Chandra} COSMOS-Legacy survey as having stellar masses $10^{7}\leq M_{*}\leq3 \times 10^{9}$ M$_{\odot}$.
M. Mezcua +6 more
semanticscholar +1 more source
Searching for Dark Matter Annihilation from Milky Way Dwarf Spheroidal Galaxies with Six Years of Fermi Large Area Telescope Data. [PDF]
Physical Review Letters, 2015 The dwarf spheroidal satellite galaxies (dSphs) of the Milky Way are some of the most dark matter (DM) dominated objects known. We report on γ-ray observations of Milky Way dSphs based on six years of Fermi Large Area Telescope data processed with the ...
M. Ackermann +125 more
semanticscholar +1 more source
Be it therefore resolved: cosmological simulations of dwarf galaxies with 30 solar mass resolution [PDF]
Monthly notices of the Royal Astronomical Society, 2018 We study a suite of extremely high-resolution cosmological Feedback in Realistic Environments simulations of dwarf galaxies ($M_{\rm halo} \lesssim 10^{10}\rm \, M_{\odot }$), run to z = 0 with $30\, \mathrm{M}_{\odot }$ resolution, sufficient (for the
Coral Wheeler +9 more
semanticscholar +1 more source
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
openaire +4 more sources
NIHAO XV: the environmental impact of the host galaxy on galactic satellite and field dwarf galaxies [PDF]
Monthly notices of the Royal Astronomical Society, 2018 We study the impact of the host on dwarf galaxy properties using four new Milky Way-like, ultra high-resolution simulations, ($N_{\rm part} >10^7$) from the NIHAO project. We split our sample in satellite ($R 2.5 R_{\rm 200}$) galaxies.
T. Buck +4 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.
openaire +4 more sources
Multimessenger Signatures of Massive Black Holes in Dwarf Galaxies [PDF]
Monthly notices of the Royal Astronomical Society, 2018 Recent discoveries of massive black holes (MBHs) in dwarf galaxies suggest that they may have a more common presence than once thought. Systematic searches are revealing more candidates, but this process could be accelerated by predictions from ...
J. Bellovary +6 more
semanticscholar +1 more source
Magnetised winds in dwarf galaxies [PDF]
Astronomy & Astrophysics, 2010 20 pages, 12 figures.
Romain Teyssier +3 more
openaire +3 more sources
Pushing back the limits: detailed properties of dwarf galaxies in a ΛCDM universe [PDF]
Astronomy & Astrophysics, 2018 We present the results of a set of high-resolution chemo-dynamical simulations of dwarf galaxies in a ΛCDM cosmology. Out of an original (3.4 Mpc/h)3 cosmological box, a sample of 27 systems are re-simulated from z = 70 to z = 0 using a zoom-in technique.
Y. Revaz, P. Jablonka
semanticscholar +1 more source
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 ...
openaire +2 more sources