Results 21 to 30 of about 5,790,906 (290)
Exploring the Perturbed Milky Way Disk and the Substructures of the Outer Disk [PDF]
The Astrophysical Journal, 2020 Abstract The recent discovery of a spiral feature in the Z − V Z phase plane in the solar neighborhood implies that the galactic disk has been remarkably affected by a dwarf galaxy passing through it some hundreds of millions of years ago.
Y. Xu +9 more
openaire +2 more sources
HIERARCHICAL STAR FORMATION IN THE MILKY WAY DISK [PDF]
The Astrophysical Journal, 2009 26 pages, 7 figures, 1 table.
Marcos, R. de la Fuente +1 more
openaire +2 more sources
A Computer Vision Milky Way Compass
, 2023 The Milky Way is used by nocturnal flying and walking insects for maintaining heading while navigating. In this study, we have explored the feasibility of the method for machine vision systems on autonomous vehicles by measuring the visual features and ...
Yiting Tao +18 more
core +1 more source
RINGS AND RADIAL WAVES IN THE DISK OF THE MILKY WAY [PDF]
The Astrophysical Journal, 2015 19figures, 2tables, ApJ ...
Yan Xu +7 more
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The Flattening Metallicity Gradient in the Milky Way’s Thin Disk [PDF]
The Astrophysical Journal, 2021 Abstract We calculate the ages, orbits and phase-space coordinates for a sample of ∼4 million LAMOST and Gaia stars. The ages are cross-matched and compared with values from two other popular age catalogs, which derive the ages using different methods.
John J. Vickers, Juntai Shen, Zhao-Yu Li
openaire +2 more sources
Clues to the formation of the Milky Way’s thick disk [PDF]
Astronomy & Astrophysics, 2015 We analyse the chemical properties of a set of solar vicinity stars, and show that the small dispersion in abundances of α-elements at all ages provides evidence that the SFH has been uniform throughout the thick disk. In the context of long time scale infall models, we suggest that this result points either to a limited dependence of the gas accretion
Haywood, M. +3 more
openaire +4 more sources
AZIMUTHAL METALLICITY STRUCTURE IN THE MILKY WAY DISK [PDF]
The Astrophysical Journal, 2015 Elemental abundance patterns in the Galactic disk constrain theories of the formation and evolution of the Milky Way. HII region abundances are the result of billions of years of chemical evolution. We made radio recombination line and continuum measurements of 21 HII regions located between Galactic azimuth Az = 90-130 degree, a previously unexplored ...
Dana S. Balser +3 more
openaire +2 more sources
Jeans Equations in the Milky Way disk using Gaia DR3
, 2023 <p>Determining the circular velocity curve of a galaxy is a powerful tool for studying its overall properties. One can fit a potential and determine the dark matter distribution and density and the virial mass of the system.<br> One way of ...
Koop, Orlin +2 more
core +1 more source
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 +3 more sources
Chemodynamical evolution of the Milky Way disk [PDF]
Astronomy & Astrophysics, 2013 In the first paper of this series, we present a new approach for studying the chemo-dynamical evolution in disk galaxies, which consists of fusing disk chemical evolution models with compatible numerical simulations of galactic disks. This method avoids known star formation and chemical enrichment problems encountered in simulations.
Minchev, I., Chiappini, C., Martig, M.
openaire +3 more sources