Results 21 to 30 of about 154,367 (172)
On the plausible origins of the spiral character of galaxies
Open Astronomy, 2021 We here-in demonstrate that the proposed hitherto unknown gravitomagnetic dark-force that hypothetically explains the Flat Rotation Curves of Spiral Galaxies — this same force, explains very well, the logarithmic and as-well, the barred spiral shapes of ...
Nyambuya Golden Gadzirayi
doaj +1 more source
The Barred Spiral Galaxy NGC 7479.
The Astronomical Journal, 1960 K. H. Prendergast +2 more
openaire +4 more sources
The Astrophysical Journal Letters, 2023 JWST/Mid-Infrared Instrument imaging of the nearby galaxies IC 5332, NGC 628, NGC 1365, and NGC 7496 from PHANGS reveals a richness of gas structures that in each case form a quasi-regular network of interconnected filaments, shells, and voids.
Sharon E. Meidt +33 more
doaj +1 more source
Formation of Major Types of Galaxies Based on the Energy Circulation Theory
Reports in Advances of Physical Sciences, 2022 The standard cosmology can answer almost nothing about how the structure of a galaxy is formed. It expects a supermassive black hole at the center and dark matter in the halo to explain the circulation of stars and its velocity.
Shigeto Nagao
doaj +1 more source
Formation of Nuclear Spirals in Barred Galaxies [PDF]
The Astrophysical Journal, 2005 38 pages, 10 figures, accepted for publication in ...
Hong Bae Ann, Parijat Thakur
openaire +3 more sources
Effect of bars on evolution of SDSS spiral galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACT We explore the significance of bars in triggering central star formation (SF) and active galactic nucleus (AGN) activity for spiral galaxy evolution using a volume-limited sample with 0.020 < z < 0.055, Mr < −19.5, and σ > 70 km s−1 selected from Sloan Digital Sky Survey Data Release 7.
Minbae Kim +2 more
openaire +3 more sources
The Astrophysical Journal Letters, 2023 Large-scale bars can fuel galaxy centers with molecular gas, often leading to the development of dense ringlike structures where intense star formation occurs, forming a very different environment compared to galactic disks.
Eva Schinnerer +39 more
doaj +1 more source
Symposium - International Astronomical Union, 1970 We point out some properties of barred spiral galaxies which are important for the theory of their formation and spiral structure, and describe some theoretical work on the dynamics of these systems.
openaire +2 more sources
THE FORMATION OF SPIRAL ARMS AND RINGS IN BARRED GALAXIES [PDF]
Chaos, Complexity and Transport, 2007 6 pages, 3 figures, conference proceedings of "Semaine de l'Astrophysique Francaise", Grenoble 2007, eds. J. Bouvier, A.
Romero-Gomez, M. +3 more
openaire +7 more sources
The Astrophysical Journal, 2023 We analyze TYPHOON long-slit-absorption line spectra of the starburst barred spiral galaxy NGC 1365 obtained with the Progressive Integral Step Method covering an area of 15 kpc ^2 .
Eva Sextl +8 more
doaj +1 more source