Galaxy disks as a research area focuses on the structure, dynamics, formation, and evolution of the flattened, rotationally supported components of galaxies, particularly spiral and lenticular systems. Studies address stellar and gas kinematics, angular momentum distribution, and the interplay between baryons and dark matter in shaping disk profiles (e.g., exponential or broken-exponential). The field investigates disk instabilities, spiral arms, bars, secular evolution, star formation regulation, radial migration, and vertical thickening, often using multiwavelength observations, integral-field spectroscopy, and cosmological simulations. Galaxy disk research is central to constraining galaxy assembly histories, feedback processes, and the coupling between galactic disks, halos, and their broader cosmological environment.
The stately and inclined spiral galaxy NGC 3511 is the subject of this NASA/ESA Hubble Space Telescope image. The galaxy is located 43 million light-years away in the constellation Crater (The Cup). From Hubble's vantage ...
Astronomy
May 23, 2025
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An international team has discovered a giant spiral disk galaxy in the early cosmos which is three times larger than similar galaxies of the same epoch.
Astronomy
Mar 17, 2025
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By peering into the cosmic dance of stars, a team led by researchers from the Leibniz Institute for Astrophysics Potsdam (AIP) has unraveled the complex structure of our Milky Way galaxy. Assuming that each observed star ...
Astronomy
Dec 19, 2024
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A team of astronomers and astrophysicists at the Chinese Academy of Sciences and the University of Toronto has found what they believe is the oldest stellar disk in the Milky Way galaxy. In their study, reported in the journal ...
Researchers have discovered the most distant Milky-Way-like galaxy yet observed. Dubbed REBELS-25, this disk galaxy seems as orderly as present-day galaxies, but we see it as it was when the universe was only 700 million ...
Astronomy
Oct 7, 2024
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