Results 31 to 40 of about 45,061 (325)
On the Origin of Dynamically Cold Rings around the Milky Way [PDF]
The Astrophysical Journal, 2008 We present a scenario for the production of dynamically cold rings around the Milky Way via a high-eccentricity, flyby encounter. These initial conditions are more cosmologically motivated than those considered in previous works. We find that the encounters we examine generically produce a series of nearly dynamically cold ring-like features on low ...
Younger, Joshua D. +5 more
openaire +3 more sources
The dynamical evolution of accreted star clusters in the Milky Way [PDF]
Monthly Notices of the Royal Astronomical Society, 2015 9 pages, 4 figures, accepted for publication in ...
Miholics, Meghan +2 more
openaire +2 more sources
Chemistry of the Most Metal-poor Stars in the Bulge and the z > 10 Universe [PDF]
, 2014 Metal-poor stars in the Milky Way are local relics of the epoch of the first stars and the first galaxies. However, a low metallicity does not prove that a star formed in this ancient era, as metal-poor stars form over a range of redshift in different ...
Casey, Andrew R., Schlaufman, Kevin C.
core +2 more sources
Resonant Effects of a Bar on the Galactic Disk Kinematics Perpendicular to Its Plane
Galaxies, 2023 Detailed analysis of kinematics of the Milky Way disk in the solar neighborhood based on the GAIA DR3 catalog reveals the existence of peculiarities in the stellar velocity distribution perpendicular to the galactic plane.
Vladimir Korchagin +4 more
doaj +1 more source
All-sky Kinematics and Chemistry of Monoceros Stellar Overdensity
The Astrophysical Journal, 2023 We explore the kinematic and chemical properties of the Monoceros stellar overdensity by combining data from the Two Micron All Sky Survey, Wide-field Infrared Survey Explorer, APOGEE, and Gaia.
Lais Borbolato +9 more
doaj +1 more source
Dynamical Models for the Milky Way
, 1996 10 pages, LaTeX, style file and 4 figures included. Invited talk presented at the meeting ``Formation of the Galactic Halo ... Inside and Out'', Tucson, October 9-11.
Dehnen, W, Binney, J
openaire +3 more sources
The Local Stellar Halo is Not Dominated by a Single Radial Merger Event
The Astrophysical Journal Letters, 2022 We use halo dwarf stars with photometrically determined metallicities that are located within 2 kpc of the Sun to identify local halo substructure. The kinematic properties of these stars do not indicate a single, dominant radial merger event (RME).
Thomas Donlon II +3 more
doaj +1 more source
Dynamical stability and evolution of the discs of Sc galaxies [PDF]
, 1997 We examine the local stability of galactic discs against axisymmetric density perturbations with special attention to the different dynamics of the stellar and gaseous components. In particular the discs of the Milky Way and of NGC 6946 are studied.
Fuchs, B., von Linden, S.
core +3 more sources
Galactic fountains and the rotation of disc-galaxy coronae [PDF]
, 2011 In galaxies like the Milky Way, cold (~ 10^4 K) gas ejected from the disc by stellar activity (the so-called galactic-fountain gas) is expected to interact with the virial-temperature (~ 10^6 K) gas of the corona.
Anderson +43 more
core +3 more sources
Measuring magnetism in the Milky Way with the Square Kilometre Array [PDF]
, 2015 Magnetic fields in the Milky Way are present on a wide variety of sizes and strengths, influencing many processes in the Galactic ecosystem such as star formation, gas dynamics, jets, and evolution of supernova remnants or pulsar wind nebulae ...
Akahori, Takuya +19 more
core +2 more sources