Results 11 to 20 of about 84,076 (356)
SUBSTRUCTURE IN BULK VELOCITIES OF MILKY WAY DISK STARS [PDF]
The Astrophysical Journal, 2013 12 pages, 3 figures, 2 tables; accepted to ApJ ...
Jeffrey L. Carlin +27 more
semanticscholar +6 more sources
Mapping the Milky Way Disk with Gaia DR3: 3D Extended Kinematic Maps and Rotation Curve to ≈30 kpc [PDF]
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 +2 more sources
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 +4 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 +5 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 +4 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 +4 more sources
HII Region Metallicity Distribution in the Milky Way Disk [PDF]
, 2011 The distribution of metals in the Galaxy provides important information about galaxy formation and evolution. HII regions are the most luminous objects in the Milky Way at mid-infrared to radio wavelengths and can be seen across the entire Galactic disk.
Afflerbach +82 more
core +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.
Omar Alfonso Bohorquez +1 more
openalex +3 more sources
Unveiling a Young Thick Disk in the Milky Way
The Astrophysical Journal LettersThe thickness of a galaxy’s disk provides a valuable probe of its formation and evolution history. Observations of the Milky Way and local galaxies have revealed an ubiquitous disk structure with two distinctive components: an old thick disk and a ...
Jianhui Lian +7 more
doaj +3 more sources
Actions Are Weak Stellar Age Indicators in the Milky Way Disk [PDF]
Astrophysical Journal, 2018 The orbital properties of stars in the Milky Way disk are signatures of their formation, but they are also expected to change over time due to the dynamical evolution of the Galaxy. Stellar orbits can be quantified by the three dynamical actions, Jr, Lz,
Angus Beane +5 more
openalex +3 more sources