Results 161 to 170 of about 455,148 (185)
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On the theory of barred and magellanic spiral galaxies
Bulletin astronomique, 1968We investigate the properties of stellar orbits in barred spiral galaxies to explain 1) the ring structures encircling the bars of SB(r) galaxies and 2) the unusual internal velocity field in the Magellanic barred Spiral NGC4027.
Freeman, Ken C., Harrington, R.
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Barred Spirals and Formation of Spiral Arms by Galaxies
Nature, 1965SO far the formation of spiral arms, especially regular arms, has not been satisfactorily explained. The investigation of this phenomenon can be facilitated by an analysis of similar, but more peculiar, objects—barred spirals. A characteristic barred galaxy has a straight bar, which at the ends transforms abruptly into spiral arms.
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Multiple patterns in spiral and barred galaxies
Publications of the Astronomical Society of the Pacific, 1993Our ability to locate resonances of spiral patterns in galaxies is severely limited if spirals are short-lived and if many patterns co-exist in the same galaxy. Theoreticians are currently divided on the basic question of whether spiral patterns are long-lived, but I argue that multiple, short-lived pattersn are to be expected. Bars, on the other hadn,
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A new model for barred spiral galaxies
Astrophysics and Space Science, 1983Computer simulations are used to demonstrate that normal spiral galaxies with symmetrically warped arms can appear to have bar and bar-within-ring structures when viewed from appropriate position angles.
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Short-Term Dynamical Evolution of Grand-Design Spirals in Barred Galaxies
Monthly Notices of the Royal Astronomical Society, 2015Junichi Baba
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What Is the True Fraction of Barred Spiral Galaxies?
Astrophysics and Space Science, 1999Paul B Eskridge, Jay A Frogel
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Dynamics of Stars Around Spiral Arms in an N -Body/SPH Simulated Barred Spiral Galaxy
Monthly Notices of the Royal Astronomical Society, 2012Daisuke Kawata +2 more
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