Results 31 to 40 of about 533,288 (308)
The formation of ultra-compact dwarf galaxies and nucleated dwarf galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2008 Ultra compact dwarf galaxies (UCDs) have similar properties as massive globular clusters or the nuclei of nucleated galaxies. Recent observations suggesting a high dark matter content and a steep spatial distribution within groups and clusters provide new clues as to their origins.
Stelios Kazantzidis +6 more
openaire +6 more sources
Baryonic clues to the puzzling diversity of dwarf galaxy rotation curves [PDF]
Monthly notices of the Royal Astronomical Society, 2019 We use a compilation of disc galaxy rotation curves to assess the role of the luminous component (‘baryons’) in the rotation curve diversity problem. As in earlier work, we find that rotation curve shape correlates with baryonic surface density: high ...
I. Santos-Santos +9 more
semanticscholar +1 more source
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
openaire +6 more sources
Simulating an isolated dwarf galaxy with multichannel feedback and chemical yields from individual stars [PDF]
Monthly notices of the Royal Astronomical Society, 2018 In order to better understand the relationship between feedback and galactic chemical evolution, we have developed a new model for stellar feedback at grid resolutions of only a few parsecs in global disk simulations, using the adaptive mesh refinement ...
A. Emerick +2 more
semanticscholar +1 more source
Manganese in dwarf spheroidal galaxies [PDF]
Astronomy & Astrophysics, 2012 19 pages, 10 figures, accepted for publication in Astronomy & ...
Mike Irwin +14 more
openaire +8 more sources
Current Velocity Data on Dwarf Galaxy NGC 1052-DF2 do not Constrain it to Lack Dark Matter [PDF]
, 2018 It was recently proposed that the globular cluster system of the very low surface brightness galaxy NGC 1052-DF2 is dynamically very cold, leading to the conclusion that this dwarf galaxy has little or no dark matter.
N. Martin +3 more
semanticscholar +1 more source
Footprints of the Sagittarius dwarf galaxy in the Gaia data set [PDF]
Monthly notices of the Royal Astronomical Society, 2018 We analyse an N-body simulation of the interaction of the Milky Way (MW) with a Sagittarius-like dSph (Sgr), looking for signatures which may be attributed to its orbital history in the phase space volume around the Sun in light of Gaia DR2 discoveries.
C. Laporte +3 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
openaire +3 more sources
The Next Generation Fornax Survey (NGFS). II. The Central Dwarf Galaxy Population [PDF]
, 2018 We present a photometric study of the dwarf galaxy population in the core region (≲rvir/4) of the Fornax galaxy cluster based on deep u′g′i′ photometry from the Next Generation Fornax Cluster Survey.
P. Eigenthaler +25 more
semanticscholar +1 more source
The Leo-I group: new dwarf galaxy and ultra diffuse galaxy candidates [PDF]
Astronomy & Astrophysics, 2018 Context. The study of dwarf galaxies and their environments provides crucial test beds for predictions of cosmological models and insights into the structure formation on small cosmological scales. In recent years, many problems on the scale of groups of
O. Müller, H. Jerjen, B. Binggeli
semanticscholar +1 more source