Results 61 to 70 of about 334,147 (281)
At the survey limits: discovery of the Aquarius 2 dwarf galaxy in the VST ATLAS and the SDSS data [PDF]
, 2016 We announce the discovery of the Aquarius 2 dwarf galaxy, a new distant satellite of the Milky Way, detected on the fringes of the VLT Survey Telescope (VST) ATLAS and the Sloan Digital Sky Survey (SDSS) surveys.
G. Torrealba +9 more
semanticscholar +1 more source
Direct evidence of hierarchical assembly at low masses from isolated dwarf galaxy groups [PDF]
Nature Astronomy, 2017 The demographics of dwarf galaxy populations have long been in tension with predictions from the Λ cold dark matter (ΛCDM) paradigm1–4. If primordial density fluctuations were scale-free as predicted, dwarf galaxies should themselves host dark-matter ...
S. Stierwalt +7 more
semanticscholar +1 more source
Abundance ratios in dwarf elliptical galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2017 We determine abundance ratios of 37 dwarf ellipticals (dEs) in the nearby Virgo cluster. This sample is representative of the early-type population of galaxies in the absolute magnitude range -19.0 < Mr < -16.0. We analyze their absorption line-strength indices by means of index-index diagrams and scaling relations and use the stellar population ...
Jesús Falcón-Barroso +21 more
openaire +10 more sources
UGC 7639: A Dwarf Galaxy in the Canes Venatici I Cloud
Advances in Astronomy, 2015 We want to get insight into the formation mechanism and the evolution of UGC 7639, a dwarf galaxy in the Canes Venatici I Cloud (CVnIC). We used archival multiwavelength data to constrain its global properties. Ultraviolet images show that UGC 7639 inner
L. M. Buson +3 more
doaj +1 more source
The M 101 group complex: new dwarf galaxy candidates and spatial structure [PDF]
, 2017 Context. The fine details of the large-scale structure in the local Universe provide important empirical benchmarks for testing cosmological models of structure formation. Dwarf galaxies are key object for such studies. Aims.
O. Muller +3 more
semanticscholar +1 more source
The M dwarf problem in the Galaxy [PDF]
Monthly Notices of the Royal Astronomical Society, 2012 To be published in Monthly Notices of the RAS by the Royal Astronomical Society and Blackwell Publishing.
Vincent M. Woolf, Andrew A. West
openaire +4 more sources
APOGEE Chemical Abundances of the Sagittarius Dwarf Galaxy [PDF]
, 2017 The Apache Point Observatory Galactic Evolution Experiment provides the opportunity of measuring elemental abundances for C, N, O, Na, Mg, Al, Si, P, K, Ca, V, Cr, Mn, Fe, Co, and Ni in vast numbers of stars.
S. Hasselquist +28 more
semanticscholar +1 more source
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
Metallic Winds in Dwarf Galaxies [PDF]
The Astrophysical Journal, 2017 Abstract We present results from models of galactic winds driven by energy injected from nuclear (at the galactic center) and non-nuclear starbursts. The total energy of the starburst is provided by very massive young stellar clusters, which can push the galactic interstellar medium and produce an important outflow. Such outflow can be a
F. Robles-Valdez +3 more
openaire +3 more sources
Discovery of Diffuse Dwarf Galaxy Candidates around M101 [PDF]
, 2017 We have conducted a search of a 9 deg2 region of the Canada–France–Hawaii-Telescope Legacy Survey around the Milky Way analog M101 (D ∼ 7 Mpc), in order to look for previously unknown low-surface-brightness galaxies.
P. Bennet +7 more
semanticscholar +1 more source