Results 81 to 90 of about 200,659 (240)
On the Interpretation of the l-v Features in the Milky Way Galaxy [PDF]
, 2000 We model the gas dynamics of barred galaxies using a three-dimensional, high-resolution, $N$-body+hydrodynamical simulation and apply it to the Milky Way in an attempt to reproduce both the large-scale structure and the clumpy morphology observed in ...
Baba, Junichi +2 more
core +4 more sources
Additional Evidence for the Existence of a Primordial Disk System
The Astrophysical JournalThe origin of very metal-poor (VMP; [Fe/H] ≤ −2.0) stars on planar orbits has been the subject of great attention since their first discovery. However, prior to the release of the Gaia BP/RP (XP) spectra and large photometric samples such as SkyMapper ...
Shuai Xu +9 more
doaj +1 more source
The Milky Way's nuclear star cluster and massive black hole
, 2014 Because of its nearness to Earth, the centre of the Milky Way is the only galaxy nucleus in which we can study the characteristics, distribution, kinematics, and dynamics of the stars on milli-parsec scales.
Schödel, Rainer
core +1 more source
Mapping the Hidden Universe: The Galaxy Distribution in the Zone of Avoidance [PDF]
, 1999 Due to the foreground extinction of the Milky Way, galaxies become increasingly faint as they approach the Galactic Equator creating a ``zone of avoidance'' (ZOA) in the distribution of optically visible galaxies of about 25%.
Cameron +21 more
core +2 more sources
Interactions of the Galactic bar and spiral arm in NGC 3627 [PDF]
, 2017 Aims: To gain insight into the expected gas dynamics at the interface of the Galactic bar and spiral arms in our own Milky Way galaxy, we examine as an extragalactic counterpart the evidence of multiple distinct velocity components in the cold dense ...
Beuther, H +4 more
core +2 more sources
On the Migration Origin of the Hercules Moving Group with GAIA, LAMOST, APOGEE, and GALAH Surveys
The Astrophysical Journal, 2023 Using Gaia DR3 data and the wavelet transformation technique, we study the substructures of the Hercules moving group (HMG): Hercules 1 (H1) and Hercules 2 (H2).
Xilong Liang +5 more
doaj +1 more source
Constraining the Milky Way potential using the dynamical kinematic substructures [PDF]
EPJ Web of Conferences, 2012 2 pages, 4 figures, to appear in the proceedings of "Assembling the Puzzle of the Milky Way", Le Grand Bornand (Apr. 17-22, 2011)
Giacomo Monari +2 more
openaire +4 more sources
Minimum-entropy Constraints on Galactic Potentials
The Astrophysical JournalA tracer sample in a gravitational potential, starting from a generic initial condition, phase-mixes toward a stationary state. This evolution is accompanied by an entropy increase, and the final state is characterized by a distribution function (DF ...
Leandro Beraldo e Silva +5 more
doaj +1 more source
A Severe Challenge to the Modified Newtonian Dynamics Phenomenology in Our Galaxy
The Astrophysical Journal, 2023 Modified Newtonian dynamics (MOND) is one of the most popular alternative theories of dark matter to explain the missing mass problem in galaxies. Although it remains controversial regarding MOND as a fundamental theory, MOND phenomenology has been shown
Man Ho Chan, Ka Chung Law
doaj +1 more source
The Milky Way's bright satellites as an apparent failure of LCDM
, 2012 We use the Aquarius simulations to show that the most massive subhalos in galaxy-mass dark matter halos in LCDM are grossly inconsistent with the dynamics of the brightest Milky Way dwarf spheroidal galaxies.
Ando +135 more
core +1 more source