Results 21 to 30 of about 44,865 (311)
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?”.
Daisuke Kawata
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THE DISTRIBUTION OF DARK MATTER IN THE MILKY WAY’S DISK [PDF]
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 ...
Annalisa Pillepich, Piero Madau
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22 pages, 8 figures, This is a pre-print of a chapter for the Encyclopedia of Astrophysics (edited by I. Mandel, section editor S.
Daisuke Kawata +2 more
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, 2007 This thesis work has focused on the Galactic disk kinematics to put some constraints on the scenarios of the thin and thick disk formation. It takes part of the RAVE project which has the goal to spectrocpically measure the radial velocities and the stellar parameters of one million stars in the South celestial hemisphere.
Lionel Veltz +2 more
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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
The Astronomical Journal, 2023 We investigate the kinematic-chemical distribution of red-giant branch stars from the LAMOST survey crossed matched with Gaia DR2 proper motions, and present time tagging for the well-known ridge structures (diagonal distributions for V _R in the R , V ...
Peng Yang +4 more
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Mapping the Milky Way Disk with Gaia DR3: 3D Extended Kinematic Maps and Rotation Curve to ≈30 kpc
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
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The Astrophysical Journal, 2023 We present a Galactic disk vertical velocity analysis using OB type stars (OB stars), red clump (RC) stars, and main-sequence turnoff (MSTO) stars with different average age populations crossmatched with LAMOST DR5 and Gaia DR3. We show that the vertical
Xiang Li +5 more
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International Astronomical Union Colloquium, 1989 A warped disk in our own galaxy is evident by means of HI, HII, γ-rays and dust observations, but unexistent when star distributions are considered, specially those of late type stars. This fact is in disagreement with the theories which assume a gravitational origin of warps, for instance a tidal interaction with the Magellanic Clouds.
E. Florido +3 more
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DETECTING THE MILKY WAY'S DARK DISK [PDF]
The Astrophysical Journal, 2009 In the standard model of disk galaxy formation, a dark matter disk forms as massive satellites are preferentially dragged into the disk plane and dissolve. Here, we show the importance of the dark disk for direct dark matter detection. The low velocity of the dark disk with respect to the Earth enhances detection rates at low recoil energy.
Bruch, T, Read, J, Baudis, L, Lake, G
openaire +3 more sources