Results 21 to 30 of about 92,409 (330)
The Astrophysical Journal, 2023 We continue our series of papers on phase-space distributions of stars in the Milky Way based on photometrically derived metallicities and Gaia astrometry, with a focus on the halo−disk interface in the local volume.
Deokkeun An +3 more
doaj +1 more source
The Astrophysical Journal, 2023 In the Λ-Cold Dark Matter model of the universe, galaxies form in part through accreting satellite systems. Previous works have built an understanding of the signatures of these processes contained within galactic stellar halos.
Danny Horta +9 more
doaj +1 more source
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
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
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
The Astrophysical Journal, 2023 Orbital characteristics based on Gaia Early Data Release 3 astrometric parameters are analyzed for ∼1700 r -process-enhanced (RPE; [Eu/Fe] > +0.3) metal-poor stars ([Fe/H] ≤ −0.8) compiled from the R -Process Alliance, the GALactic Archaeology with ...
Derek Shank +10 more
doaj +1 more source
Distant Echoes of the Milky Way’s Last Major Merger
The Astrophysical Journal, 2023 The majority of the Milky Way’s stellar halo consists of debris from our galaxy’s last major merger, the Gaia-Sausage-Enceladus (GSE). In the past few years, stars from the GSE have been kinematically and chemically studied in the inner 30 kpc of our ...
Vedant Chandra +11 more
doaj +1 more source
Chemical Abundances and Milky Way Formation [PDF]
, 2006 to be published in the proceedings of the ESO/Arcetri-workshop on "Chemical Abundances and Mixing in Stars", 13.-17. Sep. 2004, Castiglione della Pescaia, Italy, L. Pasquini, S. Randich (eds.)
Gilmore, Gerry, Wyse, Rosemary F. G.
openaire +2 more sources
The connection between the host halo and the satellite galaxies of the Milky Way [PDF]
, 2016 Many properties of the Milky Way's dark matter halo, including its mass assembly history, concentration, and subhalo population, remain poorly constrained.
Benson, Andrew +7 more
core +3 more sources