Results 61 to 70 of about 534,324 (307)
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
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
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
Magnetised winds in dwarf galaxies [PDF]
Astronomy & Astrophysics, 2010 20 pages, 12 figures.
Romain Teyssier +3 more
openaire +3 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
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
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
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
Dwarf Galaxies in the Local Volume [PDF]
Astrophysical Bulletin, 2018 AbstractThe Updated Nearby Galaxy Catalog (=UNGC) of 1047 Local Volume (=LV) galaxies, situated within a distance of 11 Mpc, contains 870 dwarfs, i.e. 5/6 of the sample. Almost 40% of them have accurate distances measured with Hubble Space Telescope. Most of the LV dwarfs have been observed in HI and Hα emission lines, as well in far-ultraviolet with ...
I. D. Karachentsev, Elena I. Kaisina
openaire +4 more sources