Results 51 to 60 of about 81,755 (239)
The Tilt of the Velocity Ellipsoid of Different Galactic Disk Populations
The Astrophysical Journal, 2023 The tilt of the velocity ellipsoid is a helpful tracer of the gravitational potential of the Milky Way. In this paper, we use nearly 140,000 red clump (RC) stars selected from LAMOST and Gaia to make a detailed analysis of the tilt of the velocity ...
Weixiang Sun, Han Shen, Xiaowei Liu
doaj +1 more source
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
Clues to the formation of the Milky Way’s thick disk [PDF]
Astronomy & Astrophysics, 2015 7 pages, 6 figures, accepted for publication in A&A, replaced to include a correction on the color bar of figure 2 and ...
Haywood, M. +3 more
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Stellar kinematics from the symmetron fifth force in the Milky Way disk [PDF]
Physical Review D, 2018 It has been shown that the presence of non-minimally coupled scalar fields giving rise to a fifth force can noticeably alter dynamics on galactic scales.
C. O’Hare, C. Burrage
semanticscholar +1 more source
THE DISTRIBUTION OF DARK MATTER IN THE MILKY WAY’S DISK [PDF]
The Astrophysical Journal, 2014 We present an analysis of the effects of dissipational baryonic physics on the local dark matter (DM) distribution at the location of the Sun, with an emphasis on the consequences for direct detection experiments. Our work is based on a comparative analysis of two cosmological simulations of a Milky Way halo: Eris, a full hydrodynamic simulation, and ...
Michael Kuhlen +5 more
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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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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
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
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