Results 1 to 10 of about 1,630 (197)
Dynamics and history of the Milky Way [PDF]
Proceedings of the International Astronomical Union, 2009 AbstractThe structure and dynamics of the Galaxy contain information about both its current workings and its assembly history. I review our understanding of the dynamics of the disk and stellar halo, and sketch how these may be used to unravel how our Galaxy formed.
A. Helmi
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Modified Newtonian Dynamics in the Milky Way [PDF]
Monthly Notices of the Royal Astronomical Society, 2005 Both microlensing surveys and radio-frequency observations of gas flow imply that the inner Milky Way is completely dominated by baryons, contrary to the predictions of standard cold dark matter (CDM) cosmology. We investigate the predictions of the Modified Newtonian Dynamics (MOND) formula for the Galaxy given the measured baryon distribution ...
Benoît Famaey, James Binney
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Milky Way dynamics in light of Gaia [PDF]
New Astronomy ReviewsThe Gaia mission has triggered major developments in the field of Galactic dynamics in recent years, which we discuss in this review. The structure and kinematics of all Galactic components - disc, bar/bulge and halo - are now mapped in great detail not only in the Solar neighbourhood, but across a large part of the Milky Way. The dramatic improvements
John Douglas Hunt, Eugene Vasiliev
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Testing modified Newtonian dynamics in the Milky Way [PDF]
Physical Review D, 2015 Modified Newtonian dynamics (MOND) is an empirical theory originally proposed to explain the rotation curves of spiral galaxies by modifying the gravitational acceleration, rather than by invoking dark matter. Here,we set constraints on MOND using an up-to-date compilation of kinematic tracers of the Milky Way and a comprehensive collection of ...
Fabio Iocco +2 more
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The escape velocity curve of the Milky Way in modified Newtonian dynamics [PDF]
Monthly Notices of the Royal Astronomical Society, 2017 We determine the escape velocity from the Milky Way (MW) at a range of Galactocentric radii in the context of Modified Newtonian Dynamics (MOND). Due to its non-linear nature, escape is possible if the MW is considered embedded in a constant external gravitational field (EF) from distant objects.
Indranil Banik, Hongsheng Zhao
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Milky Way chemo‐dynamics in the era of Gaia [PDF]
Astronomische Nachrichten, 2016 AbstractThe main goal of Galactic Archaeology is understanding the formation and evolution of the basic Galactic components. This requires sophisticated chemo‐dynamical modeling, where disc asymmetries (e.g., perturbations from the central bar, spirals arms, and infalling satellites) and non‐equilibrium processes are taken into account self ...
Ivan Minchev, C. Chiappini, Marie Martig
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Galactic Forces Rule the Dynamics of Milky Way Dwarf Galaxies [PDF]
The Astrophysical Journal, 2018 Abstract Dwarf galaxies populating the Galactic halo are assumed to host the largest fractions of dark matter, as calculated from their velocity dispersions. Their major axes are preferentially aligned with the Vast Polar Structure (VPOS) that is perpendicular to the Galactic disk, and we find their velocity gradients aligned as well ...
F. Hammer +6 more
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The mass of the Milky Way from satellite dynamics [PDF]
Monthly Notices of the Royal Astronomical Society, 2019 Abstract We present and apply a method to infer the mass of the Milky Way (MW) by comparing the dynamics of MW satellites to those of model satellites in the eagle cosmological hydrodynamics simulations. A distribution function (DF) for galactic satellites is constructed from eagle using specific angular momentum and specific energy ...
Thomas M. Callingham +8 more
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Dynamics of stellar and HI streams in the Milky Way halo [PDF]
EPJ Web of Conferences, 2012 4 pages, 2 figures, to appear in the proceedings of "Assembling the Puzzle of the Milky Way", Le Grand-Bornand (Apr 17-22, 2011)
Shoko Jin
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Large-scale Gas Dynamics in the Milky Way
, 2003 We present new gas flow models for the Milky Way inside the solar circle. Using a mass model derived from the COBE/DIRBE maps and clump giant star counts, and using a parametric model for the spiral arm pattern in the disk, we calculate the gas flow and compare with 12CO observations.
P. Englmaier +2 more
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