The dynamical evolution of accreted star clusters in the Milky Way [PDF]
Monthly Notices of the Royal Astronomical Society, 2015 9 pages, 4 figures, accepted for publication in ...
Miholics, Meghan +2 more
openaire +2 more sources
Proper motions and dynamics of the Milky Way globular cluster system fromGaiaDR2 [PDF]
Monthly notices of the Royal Astronomical Society, 2018 We use Gaia Data Release 2 to determine the mean proper motions for 150 Milky Way globular clusters (almost the entire known population), with a typical uncertainty of 0.05 mas/yr limited mainly by systematic errors. Combining them with distance and line-
E. Vasiliev
semanticscholar +1 more source
Stellar Bars in Isolated Gas-rich Spiral Galaxies Do Not Slow Down
The Astrophysical Journal, 2023 Elongated bar-like features are ubiquitous in galaxies, occurring at the centers of approximately two-thirds of spiral disks in the nearby Universe. Due to gravitational interactions between the bar and the other components of galaxies, it is expected ...
Angus Beane +8 more
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
Exploring substructures in the Milky Way halo. Neural networks applied to Gaia and APOGEE DR17 [PDF]
Astronomy & AstrophysicsThe identification of stellar structures in the Galactic halo, including stellar streams and merger remnants, often relies on the dynamics of their constituent stars.
L. Berni +5 more
semanticscholar +1 more source
Dynamical Models for the Milky Way
, 1996 The only way to map the Galaxy's gravitational potential $Φ({\bf x})$ and the distribution of matter that produces it is by modelling the dynamics of stars and gas. Observations of the kinematics of gas provide key information about gradients of $Φ$ within the plane, but little information about the structure of $Φ$ out of the plane. Traditional Galaxy
Dehnen, W, Binney, J
openaire +3 more sources
The Imprint of Clump Formation at High Redshift. II. The Chemistry of the Bulge
The Astrophysical Journal, 2023 In Paper I, we showed that clumps in high-redshift galaxies, having a high star formation rate density (Σ _SFR ), produce disks with two tracks in the [Fe/H]–[ α /Fe] chemical space, similar to that of the Milky Way’s (MW’s) thin+thick disks.
Victor P. Debattista +13 more
doaj +1 more source
First Gaia dynamical model of the Milky Way disc with six phase space coordinates: a test for galaxy dynamics [PDF]
Monthly notices of the Royal Astronomical Society, 2019 We construct the first comprehensive dynamical model for the high-quality subset of stellar kinematics of the Milky Way disc, with full 6D phase-space coordinates, provided by the Gaia Data Release 2.
M. S. Nitschai +2 more
semanticscholar +1 more source
Mapping the Distant and Metal-poor Milky Way with SDSS-V [PDF]
Astrophysical JournalThe fifth-generation Sloan Digital Sky Survey (SDSS-V) is conducting the first all-sky low-resolution spectroscopic survey of the Milky Way’s (MW) stellar halo.
V. Chandra +30 more
semanticscholar +1 more source
The life cycle of giant molecular clouds in simulated Milky Way-mass galaxies [PDF]
Astronomy & AstrophysicsGiant molecular clouds (GMCs) are the primary sites of star formation in galaxies. Their evolution, driven by the interplay of gravitational collapse, stellar feedback, and galactic dynamics, is key to understanding local star formation on GMC scales ...
Yang Ni +5 more
semanticscholar +1 more source