Results 51 to 60 of about 399,477 (315)
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
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
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
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
AGN feedback in dwarf galaxies? [PDF]
Monthly Notices of the Royal Astronomical Society, 2017 6 pages, 5 ...
Dashyan, Gohar +4 more
openaire +4 more sources
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
Cusp Disruption in Minor Mergers [PDF]
, 2001 We present 0.55 x 10^6 particle simulations of the accretion of high-density dwarf galaxies by low-density giant galaxies, using models that contain both power-law central density cusps and point masses representing supermassive black holes.
David Merritt +4 more
core +2 more sources
High Lyman Continuum Escape Fraction in a Lensed Young Compact Dwarf Galaxy at z = 2.5 [PDF]
, 2017 We present the HST WFC3/F275W UV imaging observations of A2218-Flanking, a lensed compact dwarf galaxy at redshift . The stellar mass of A2218-Flanking is and SFR is yr−1 after correcting the magnification.
F. Bian +4 more
semanticscholar +1 more source
Eight per cent leakage of Lyman continuum photons from a compact, star-forming dwarf galaxy [PDF]
Nature, 2016 One of the key questions in observational cosmology is the identification of the sources responsible for ionization of the Universe after the cosmic ‘Dark Ages’, when the baryonic matter was neutral.
Y. Izotov +7 more
semanticscholar +1 more source
An r-process Enhanced Star in the Dwarf Galaxy Tucana III [PDF]
, 2017 Chemically peculiar stars in dwarf galaxies provide a window for exploring the birth environment of stars with varying chemical enrichment. We present a chemical abundance analysis of the brightest star in the newly discovered ultra-faint dwarf galaxy ...
T. Hansen +53 more
semanticscholar +1 more source