Results 11 to 20 of about 200,659 (240)
Celestial Mechanics and Dynamical Astronomy, 2006 The Milky Way is made up of a central bar, a disk with embedded spiral arms, and a dark matter halo. Observational and theoretical constraints for the characteristic parameters of these components will be presented, with emphasis on the constraints from the dynamics of the Milky Way gas.
Englmaier, Peter, Gerhard, Ortwin
openaire +5 more sources
A Study of the Properties and Dynamics of the Disk of Satellites in a Milky-Way-like Galaxy System [PDF]
Galaxies, 2023 The dynamics of the satellite systems of Milky-Way-like galaxies offer a useful means by which to study the galaxy formation process in the cosmological context. It has been suggested that the currently observed anisotropic distribution of the satellites
Xinghai Zhao +3 more
semanticscholar +5 more sources
The mass of the Milky Way from satellite dynamics [PDF]
Monthly Notices of the Royal Astronomical Society, 2018 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.
T. Callingham +8 more
semanticscholar +5 more sources
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
+9 more sources
Proper motions and dynamics of the Milky Way globular cluster system fromGaiaDR2 [PDF]
Monthly notices of the Royal Astronomical Society, 2019 We use Gaia Data Release 2 to determine the mean proper motions for 150 Milky Way globular clusters (almost the entire known population), with a typical uncertainty of 0.05 mas/yr limited mainly by systematic errors. Combining them with distance and line-
Eugene Vasiliev
openalex +3 more sources
Gas dynamics in the Milky Way: second pattern speed and large-scale morphology [PDF]
, 2003 We present new gas flow models for the Milky Way inside the solar circle. To this end we use SPH simulations in gravitational potentials determined from the NIR luminosity distribution (including spiral arms) which are based on the COBE/DIRBE maps.
Nicolai Bissantz +2 more
openalex +5 more sources
Orbital dynamics and histories of satellite galaxies around Milky Way – mass galaxies in the FIRE simulations [PDF]
Monthly notices of the Royal Astronomical Society, 2022 The orbits of satellite galaxies encode rich information about their histories. We investigate the orbital dynamics and histories of satellite galaxies around Milky Way (MW)-mass host galaxies using the FIRE-2 cosmological simulations, which, as ...
Isaiah B. Santistevan +4 more
openalex +3 more sources
How do the dynamics of the Milky Way–Large Magellanic Cloud system affect gamma-ray constraints on particle dark matter? [PDF]
Monthly notices of the Royal Astronomical Society, 2022 Previous studies on astrophysical dark matter (DM) constraints have all assumed that the Milky Way’s (MW) DM halo can be modelled in isolation. However, recent work suggests that the MW’s largest dwarf satellite, the Large Magellanic Cloud (LMC), has a
Christopher Eckner +4 more
semanticscholar +5 more sources
The history of dynamics and stellar feedback revealed by the H I filamentary structure in the disk of the Milky Way [PDF]
Astronomy & Astrophysics, 2020 We present a study of the filamentary structure in the emission from the neutral atomic hydrogen (HI) at 21 cm across velocity channels in the 40′′ and 1.5-km s−1 resolution position-position-velocity cube, resulting from the combination of the single ...
J. D. Soler +21 more
openalex +3 more sources
Nearly coeval intermediate-age Milky Way star clusters at very different dynamics evolutionary stages [PDF]
Monthly notices of the Royal Astronomical Society, 2019 We report astrophysical properties of 12 Milky Way open clusters located beyond a 2 kpc circle around the Sun by using deep optical photometry. We estimated their age and metallicities on the basis of a maximum likelihood approach using astrometric ...
Andrés E. Piatti +2 more
openalex +3 more sources