Results 11 to 20 of about 5,633,642 (286)
A dynamically young and perturbed Milky Way disk [PDF]
Nature, 2018 The evolution of the Milky Way disk, which contains most of the stars in the Galaxy, is affected by several phenomena. For example, the bar and the spiral arms of the Milky Way induce radial migration of stars and can trap or scatter stars close to orbital resonances.
Annie Robin +2 more
exaly +13 more sources
Does the Milky Way Have a Maximal Disk? [PDF]
Astrophysical Journal, 1997 Accepted for publication in The Astrophysical Journal. 23 Latex-generated pages, one (new) table, three figures (two new). A few additions to the bibliography, an expanded discussion, and slight quantitative changes, none of which affect the ...
Sackett, PD
exaly +6 more sources
22 pages, 8 figures, This is a pre-print of a chapter for the Encyclopedia of Astrophysics (edited by I. Mandel, section editor S.
Jason Hunt +2 more
exaly +4 more sources
Disk origin of the Milky Way bulge: the necessity of the thick disk [PDF]
Astronomy and Astrophysics, 2019 In the Milky Way bulge, metal-rich stars form a strong bar and are more peanut-shaped than metal-poor stars. It has recently been claimed that this behavior is driven by the initial (i.e., before bar formation) in-plane radial velocity dispersion of these populations, rather than by their initial vertical random motions.
Françoise Combes
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The Milky Way’s stellar disk [PDF]
Astronomy and Astrophysics Review, 2013 A suite of vast stellar surveys mapping the Milky Way, culminating in the Gaia mission, is revolutionizing the empirical information about the distribution and properties of stars in the Galactic stellar disk. We review and lay out what analysis and modeling machinery needs to be in place to test mechanisms of disk galaxy evolution and to stringently ...
Jo Bovy, Hans-Walter Rix
exaly +4 more sources
Is There a Disk of Satellites around the Milky Way? [PDF]
The Astrophysical Journal, 2017 Abstract The “disk of satellites” (DoS) around the Milky Way is a highly debated topic with conflicting interpretations of observations and their theoretical models. We perform a comprehensive analysis of all of the dwarfs detected in the Milky Way and find that the DoS structure depends strongly on the plane identification method and ...
Moupiya Maji +3 more
core +8 more sources
Vertical Structure of the Milky Way Disk with Gaia DR3
Galaxies, 2023 Using a complete sample of about 330,000 dwarf stars, well measured by Gaia DR3, limited to the galactic north and south solid angles |b|700 pc and points to the presence of more stars beyond the thin disk that cannot be accounted for by the two-disk ...
Katherine Vieira +3 more
doaj +3 more sources
The Vertical Displacement of the Milky Way Disk [PDF]
Proceedings of the International Astronomical Union, 2016 AbstractAn oscillating vertical displacement of the Milky Way, with a wavelength of about 8 kpc and and amplitude of about 100 pc (increasing with distance from the Galactic center) is observed towards the Galactic anticenter. These oscillations are thought to be the result of disk perturbations from dwarf satellites of the Milky Way.
Newberg, Heidi Jo, Xu, Yan
openaire +3 more sources
Clues to the formation of the Milky Way’s thick disk [PDF]
Astronomy and Astrophysics, 2015 We analyse the chemical properties of a set of solar vicinity stars, and show that the small dispersion in abundances of α-elements at all ages provides evidence that the SFH has been uniform throughout the thick disk. In the context of long time scale infall models, we suggest that this result points either to a limited dependence of the gas accretion
M D Lehnert
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, 2015 7 pages, 9 figures. Full text in English. To be published in the 57 Bulletin of the Argentinian Association of Astronomy (BAAA 57)
CARRARO, GIOVANNI
openaire +4 more sources