Results 11 to 20 of about 3,911 (275)
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
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
, 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
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Disk Assembly of the Milky Way Suggested from the Time-resolved Chemical Abundance
The Astrophysical JournalBoth simulations and observations suggest that the disk assembly of galaxies is governed by the interplay between coplanar gas inflow, ex-planar gas outflow, and in situ star formation on the disk, known as the leaky accretion disk.
Enci Wang +3 more
doaj +4 more sources
ACTION-BASED DYNAMICAL MODELING FOR THE MILKY WAY DISK [PDF]
The Astrophysical Journal, 2016 ABSTRACT We present RoadMapping, a full-likelihood dynamical modeling machinery that aims to recover the Milky Way’s (MW) gravitational potential from large samples of stars in the Galactic disk. RoadMapping models the observed positions and velocities of stars with a parameterized, three-integral distribution function (DF) in a ...
Wilma H. Trick, Jo Bovy, Hans-Walter Rix
openaire +4 more sources
Role of Gaseous Disk in the Formation of the Spiral Structure of the Milky Way Galaxy
Open Astronomy, 2016 We use observational gaseous and stellar density distributions in the disk of the Milky Way (MW) galaxy together with the disk rotation curve and measured disk velocity dispersion to build collisionless and combined collisionless-gaseous equilibrium ...
Korchagin V. I. +2 more
doaj +2 more sources
Origin of the Milky Way disk of satellites: collision of two disk galaxies [PDF]
TECCIENCIA, 2016 The dwarf satellite galaxies of the Milky Way are structures that are distributed around the galaxy in an anisotropic manner on a structure called VPOS or DoS. This structure does not match the predictions made by the cold dark matter cosmological model. This model predicts a fully isotropic distribution around the Milky Way.
Bohórquez Pacheco, Omar Alfonso +1 more
openaire +3 more sources
The Milky Way and other spiral galaxies
EPJ Web of Conferences, 2012 Cosmologists have often considered the Milky Way as a typical spiral galaxy, and its properties have considerably influenced the current scheme of galaxy formation.
Wang J.L. +5 more
doaj +2 more sources
Forward Modelling the Secular Evolution of the Milky Way Disk [PDF]
, 2021 We know precisely the position of the Sun in our Galaxy. Yet, like for most stars, we cannot tell where it was born. Stars undergo dynamical memory loss: their orbits evolve, because the Milky Way, like many galaxies, has non-axisymmetric structures ...
Frankel, Neige
core +1 more source
Mapping the Milky Way Disk with Gaia DR3: 3D Extended Kinematic Maps and Rotation Curve to ≈30 kpc
The Astrophysical Journal, 2022 We apply a statistical deconvolution of the parallax errors based on Lucy’s inversion method (LIM) to the Gaia DR3 sources to measure their 3D velocity components in the range of Galactocentric distances R between 8 and 30 kpc with their corresponding ...
Hai-Feng Wang +3 more
doaj +1 more source