Results 31 to 40 of about 3,911 (275)
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
The Rapid Onset of Stellar Bars in the Baryon-dominated Centers of Disk Galaxies
The Astrophysical Journal, 2023 Recent observations of high-redshift galactic disks ( z ≈ 1–3) show a strong negative trend in the dark-matter (DM) fraction f _DM with increasing baryon surface density.
Joss Bland-Hawthorn +3 more
doaj +1 more source
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
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
Milky Way Thin and Thick Disk Kinematics with Gaia EDR3 and RAVE DR5 [PDF]
, 2022 We present a detailed analysis of kinematics of the Milky Way disk in the solar neighborhood using the Gaia DR3 catalog. To determine the local kinematics of the stellar disks of the Milky Way we use a complete sample of 278,228 red giant branch (RGB ...
Giovanni Carraro +5 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
openaire +2 more sources
The evolution of carbon and oxygen in the bulge and disk of the Milky Way [PDF]
Astronomy & Astrophysics, 2009 The evolution of C and O abundances in the Milky Way can impose strong constraints on stellar nucleosynthesis and help understanding the formation and evolution of our Galaxy. The aim is to review the measured C and O abundances in the disk and bulge of the Galaxy and compare them with model predictions.
CESCUTTI, GABRIELE +3 more
openaire +3 more sources
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
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
Milky Way thin and thick disk kinematics with GAIA data [PDF]
, 2023 openThe evolution of galaxies has been studied for many years, but there is still no uniform scenario to describe our Galaxy and galaxies in the neighborhood as well as high-redshift galaxies. The work describes the basic ideas about the thick and thin
LUTSENKO, ARTEM
core