Results 51 to 60 of about 41,389 (308)
RINGS AND RADIAL WAVES IN THE DISK OF THE MILKY WAY [PDF]
The Astrophysical Journal, 2015 19figures, 2tables, ApJ ...
Jing Li +8 more
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SUBSTRUCTURE DEPLETION IN THE MILKY WAY HALO BY THE DISK [PDF]
The Astrophysical Journal, 2010 We employ numerical simulations and simple analytical estimates to argue that dark matter substructures orbiting in the inner regions of the Galaxy can be efficiently destroyed by disk shocking, a dynamical process known to affect globular star clusters.
Volker Springel +4 more
openaire +4 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
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,
A. Beane, M. Ness, M. Bedell
semanticscholar +1 more source
Milky Way's thick and thin disk: Is there a distinct thick disk? [PDF]
Astronomische Nachrichten, 2016 AbstractThis article is based on our discussion session on Milky Way models at the 592 WE‐Heraeus Seminar, Reconstructing the Milky Way's History: Spectroscopic Surveys, Asteroseismology and Chemodynamical Models. The discussion focused on the following question: “Are there distinct thick and thin disks?”.
Kawata, D, Chiappini, C
openaire +4 more sources
THE RELATIONSHIP BETWEEN MONO-ABUNDANCE AND MONO-AGE STELLAR POPULATIONS IN THE MILKY WAY DISK [PDF]
, 2016 Studying the Milky Way disk structure using stars in narrow bins of [Fe/H] and [α/Fe] has recently been proposed as a powerful method to understand the Galactic thick and thin disk formation.
I. Minchev +6 more
semanticscholar +1 more source
Chemodynamical evolution of the Milky Way disk - I. The solar vicinity [PDF]
, 2012 [Abridged] In this 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.
I. Minchev, C. Chiappini, M. Martig
semanticscholar +1 more source
A Bayesian Approach to the Vertical Structure of the Disk of the Milky Way [PDF]
The Open Journal of Astrophysics, 2020 This work investigates the vertical profile of the stars in the disk of the Milky Way. The models investigated are of the form $sech^{2/n}(nz/(2H))$ where, setting $ = 2/n$, the three functions of the sequence $ = 0,1,2$ correspond to exponential, $sech$, $sech^2$ functions.
Phillip S. Dobbie, Stephen J. Warren
openaire +8 more sources
METALLICITY GRADIENTS IN THE MILKY WAY DISK AS OBSERVED BY THE SEGUE SURVEY [PDF]
, 2011 The observed radial and vertical metallicity distribution of old stars in the Milky Way disk provides a powerful constraint on the chemical enrichment and dynamical history of the disk system.
Judy Y. Cheng +8 more
semanticscholar +1 more source
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
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