Results 1 to 10 of about 1,131 (159)
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 ...
Hans-Walter Rix +2 more
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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 ...
Penny D Sackett
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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
SUBSTRUCTURE DEPLETION IN THE MILKY WAY HALO BY THE DISK [PDF]
Astrophysical Journal, 2010 We employ numerical simulations and simple analytical estimates to argue that dark matter substructures orbiting in the inner regions of the Galaxy can be efficiently destroyed by disk shocking, a dynamical process known to affect globular star clusters.
Elena D'Onghia +2 more
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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.
M Romero-Gómez, D W Evans, E Poggio
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THE DISTRIBUTION OF DARK MATTER IN THE MILKY WAY’S DISK [PDF]
Astrophysical Journal, 2014 We present an analysis of the effects of dissipational baryonic physics on the local dark matter (DM) distribution at the location of the Sun, with an emphasis on the consequences for direct detection experiments. Our work is based on a comparative analysis of two cosmological simulations of a Milky Way halo: Eris, a full hydrodynamic simulation, and ...
Annalisa Pillepich +2 more
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Milky Way's thick and thin disk: Is there a distinct thick disk? [PDF]
Astronomische Nachrichten, 2016 AbstractThis article is based on our discussion session on Milky Way models at the 592 WE‐Heraeus Seminar, Reconstructing the Milky Way's History: Spectroscopic Surveys, Asteroseismology and Chemodynamical Models. The discussion focused on the following question: “Are there distinct thick and thin disks?”.
Daisuke Kawata, Cristina Chiappini
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22 pages, 8 figures, This is a pre-print of a chapter for the Encyclopedia of Astrophysics (edited by I. Mandel, section editor S.
Daisuke Kawata +2 more
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Unveiling a Young Thick Disk in the Milky Way
The Astrophysical Journal LettersThe thickness of a galaxy’s disk provides a valuable probe of its formation and evolution history. Observations of the Milky Way and local galaxies have revealed an ubiquitous disk structure with two distinctive components: an old thick disk and a ...
Jianhui Lian +7 more
doaj +3 more sources
The Astronomical Journal, 2023 We investigate the kinematic-chemical distribution of red-giant branch stars from the LAMOST survey crossed matched with Gaia DR2 proper motions, and present time tagging for the well-known ridge structures (diagonal distributions for V _R in the R , V ...
Peng Yang +4 more
doaj +1 more source