Results 151 to 160 of about 324,804 (215)

A census of AGB stars in the Milky Way and M31 subgroups of dwarf-spheroidal galaxies [PDF]

, 2004
F. Kirschbaum, B. Heiling, W. Nowotny, Ch. Spindler, H. Olofsson, H. E. Schwarz   +5 more
openalex   +1 more source

A Potential Dynamical Origin of the Galactic Disk Warp: The Gaia–Sausage–Enceladus Major Merger

The Astrophysical Journal
Previous studies have revealed that the Galactic warp is a long-lived, nonsteady, and asymmetric structure. There is a need for a model that accounts for the warp’s long-term evolution. Given that this structure has persisted for over 5 Gyr, its timeline
Mingji Deng, Cuihua Du, Yanbin Yang, Jiwei Liao, Dashuang Ye   +4 more
doaj   +1 more source

Archer of the Galactic disk? The effect on the outer HI disk of the Milky Way of collisional encounters with the Sagittarius dwarf galaxy

, 1998
Rodrigo Ibata, A. Razoumov
openalex   +2 more sources

A New Milky Way Dwarf Galaxy in Ursa Major [PDF]

, 2005
Beth Willman, Julianne J. Dalcanton, David Martínez‐Delgado, Andrew A. West, Michael R. Blanton, David W. Hogg, John C. Barentine, H. Brewington, Michael Harvanek, S. J. Kleinman, J. Krzesiński, Dan Long, Eric H. Neilsen, A. Nitta, Stephanie A. Snedden   +14 more
openalex   +1 more source

The Age–Velocity Dispersion Relations of the Galactic Disk as Revealed by the LAMOST-Gaia Red Clump Stars

The Astrophysical Journal
Using nearly 230,000 red clump stars selected from LAMOST and Gaia, we conduct a comprehensive analysis of the stellar age–velocity dispersion relations (AVRs) for various disk populations, within 5.0 ≤ R ≤ 15.0 kpc and ∣ Z ∣ ≤ 3.0 kpc.
Weixiang Sun, Han Shen, Biwei Jiang, Xiaowei Liu   +3 more
doaj   +1 more source

Oxygen Abundances in the Milky Way Using X‐Ray Absorption Measurements toward Galaxy Clusters [PDF]

, 2006
W. H. Baumgartner, R. F. Mushotzky
openalex   +1 more source

The spatial distribution of the Milky Way and Andromeda satellite galaxies [PDF]

, 2006
Manuel Metz, Pavel Kroupa, Helmut Jerjen
openalex   +1 more source

A Perspective on the Milky Way Bulge Bar as Seen from the Neutron-capture Elements Cerium and Neodymium with APOGEE

The Astrophysical Journal
This study probes the chemical abundances of the neutron-capture elements cerium and neodymium in the inner Milky Way from an analysis of a sample of ∼2000 stars in the Galactic bulge bar spatially contained within ∣ X _Gal ∣ < 5 kpc, ∣ Y _Gal ∣ < 3.5 ...
J. V. Sales-Silva, K. Cunha, V. V. Smith, S. Daflon, D. Souto, R. Guerço, A. Queiroz, C. Chiappini, C. R. Hayes, T. Masseron, Sten Hasselquist, D. Horta, N. Prantzos, M. Zoccali, C. Allende Prieto, B. Barbuy, R. Beaton, D. Bizyaev, J. G. Fernández-Trincado, P. M. Frinchaboy, J. A. Holtzman, J. A. Johnson, Henrik Jönsson, S. R. Majewski, D. Minniti, D. L. Nidever, R. P. Schiavon, M. Schultheis, J. Sobeck, G. S. Stringfellow, G. Zasowski   +30 more
doaj   +1 more source

Discovery of a cluster of galaxies behind the Milky Way: X-ray and optical observations [PDF]

, 2006
R. Lopes de Oliveira, G. B. Lima Neto, C. Mendes de Oliveira, E. Janot-Pacheco, C. Motch   +4 more
openalex   +1 more source

Decoding the Galactic Twirl: The Downfall of Milky Way-mass Galaxies Rotation Curves in the FIRE Simulations [PDF]

arXiv
Recent measurements of the Milky Way rotation curve found a sharp decline at around $15$-$20$ kpc from the center of the Galaxy, suggesting that the Galactic dark matter halo is much less massive than predicted by other dynamical tracers. To address this tension, we study the validity of the assumptions made in calculating the Milky Way's rotation ...
arxiv