Results 41 to 50 of about 320,090 (320)
The Vertical Displacement of the Milky Way Disk [PDF]
Formation and Evolution of Galaxy Outskirts, Proceedings of the
International Astronomical Union, IAU Symposium, Volume 321, pp. 13-15, 2017, 2017 An 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.
arxiv +1 more source
The Astrophysical Journal, 2023 We investigate the angular momentum of mono-abundance populations (MAPs) of the Milky Way thick disk by using a sample of 26,076 giant stars taken from APOGEE Data Release (DR) 17 and Gaia early DR3.
Guozhen Hu, Zhengyi Shao, Lu Li
doaj +1 more source
The Astrophysical Journal, 2023 The study of the elusive hot component ( T ≳ 10 ^7 K) of the Milky Way circumgalactic medium (CGM) is a novel topic for understanding Galactic formation and evolution.
Armando Lara-DI +4 more
doaj +1 more source
Figure Rotation of IllustrisTNG Halos
The Astrophysical Journal, 2023 We use the TNG50 and TNG50 dark matter (DM)-only simulations from the IllustrisTNG simulation suite to conduct an updated survey of halo figure rotation in the presence of baryons.
Neil Ash, Monica Valluri
doaj +1 more source
A Component of the Smith High-velocity Cloud Now Crossing the Galactic Plane
The Astrophysical Journal, 2023 We have identified a new structure in the Milky Way: a leading component of the Smith high-velocity cloud that is now crossing the Galactic plane near longitude 25°. Using new 21 cm H i data from the Green Bank Telescope (GBT), we measured the properties
Felix J. Lockman +3 more
doaj +1 more source
Reverse engineering the Milky Way [PDF]
, 2020 The ages, metallicities, alpha-elements and integrals of motion of globular clusters (GCs) accreted by the Milky Way from disrupted satellites remain largely unchanged over time. Here we have used these conserved properties in combination to assign 76 GCs to 5 progenitor satellite galaxies -- one of which we dub the Koala dwarf galaxy.
arxiv +1 more source
The Chemical Evolution of the Milky Way [PDF]
, 2000 10 pages including 3 figs, to appear in "The Chemical Evolution of the Milky Way. Stars vs Clusters", Proceedings of the Sept.1999 Vulcano Workshop, F.Giovannelli and F.Matteucci eds (Kluwer, Dordrecht) in ...
openaire +3 more sources
Impact of AGB Stars on the Chemical Evolution of Neutron-Capture Elements
Universe, 2022 In this review, we discuss the impact of s-process nucleosynthesis in asymptotic giant branch stars on the enrichment of heavy elements. We review the main steps made on this subject in the last 40 years and discuss the importance of modelling the ...
Gabriele Cescutti, Francesca Matteucci
doaj +1 more source
Evolution of lithium in the Milky Way halo, discs, and bulge [PDF]
Monthly Notices of the Royal Astronomical Society, 2019 Abstract In this work, we study the Galactic evolution of lithium by means of chemical evolution models in the light of the most recent spectroscopic data from Galactic stellar surveys. We consider detailed chemical evolution models for the Milky Way halo, discs, and bulge, and we compare our model predictions with the most recent ...
V. Grisoni +5 more
openaire +5 more sources
The Dynamical Evolution of Accreted Star Clusters in the Milky Way [PDF]
, 2015 We perform $N$-body simulations of star clusters in time-dependant galactic potentials. Since the Milky Way was built-up through mergers with dwarf galaxies, its globular cluster population is made up of clusters formed both during the initial collapse of the Galaxy and in dwarf galaxies that were later accreted.
arxiv +1 more source