Results 1 to 10 of about 7,946 (225)
Asymptotic Orbits in Barred Spiral Galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2010 We study the formation of the spiral structure of barred spiral galaxies, using an $N$-body model. The evolution of this $N$-body model in the adiabatic approximation maintains a strong spiral pattern for more than 10 bar rotations.
Athanassoula +30 more
core +3 more sources
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.
K. C. Freeman
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The Distribution of Bar and Spiral Strengths in Disk Galaxies [PDF]
The Astronomical Journal, 2005 The distribution of bar strengths in disk galaxies is a fundamental property of the galaxy population that has only begun to be explored. We have applied the bar/spiral separation method of Buta, Block, and Knapen to derive the distribution of maximum ...
Aguerri J. A. L. +15 more
core +3 more sources
J0107a: A Barred Spiral Dusty Star-forming Galaxy at z = 2.467
The Astrophysical Journal Letters, 2023 Dusty star-forming galaxies (DSFGs) are among the most massive and active star-forming galaxies during the cosmic noon. Theoretical studies have proposed various formation mechanisms of DSFGs, including major merger-driven starbursts and secular star ...
Shuo Huang +9 more
doaj +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
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Starbursts in barred spiral galaxies [PDF]
Astronomy and Astrophysics Supplement Series, 1998 This paper presents optical long-slit spectroscopic observations of 105 barred Markarian IRAS galaxies. These observations are used to determine the spectral type of emission-line regions in the nucleus and along the bar of the galaxies, in order to define a homogeneous sample of Starburst Nucleus Galaxies (SBNGs). Our selection criteria have been very
Contini, T., Considere, S., Davoust, E.
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Multicolor Photometry of Barred Spiral Galaxies [PDF]
International Astronomical Union Colloquium, 1996 B – V and R – I color maps (from CCD imagery obtained at Cerro Tololo Inter-American Observatory) of six barred spiral galaxies have been used (Horst 1992) to investigate stellar populations within the bars and nuclei. Two-color diagrams show that the distribution of pixel colors largely parallels the expected locus for normal unreddened stars. If the “
William D. Horst, Charles J. Peterson
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TESTING THEORIES IN BARRED-SPIRAL GALAXIES [PDF]
The Astrophysical Journal, 2011 According to one version of the recently proposed "manifold" theory that explains the origin of spirals and rings in relation to chaotic orbits, galaxies with stronger bars should have a higher spiral arms pitch angle when compared to galaxies with weaker bars.
Eric E. Martínez-García +1 more
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Diffusion in barred-spiral galaxies [PDF]
, 2010 We characterize the radial migration of stars in the disk plane by calculating the diffusion coefficient and the diffusion time-scale for a bulge-disk N-body self-consistent system with a marginally-stable Toomre-Q parameter. We find that diffusion is not constant in time, but follows the evolution of the bar, and becomes maximum near the corotation ...
Brunetti, Maura +2 more
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Formation of Nuclear Spirals in Barred Galaxies [PDF]
The Astrophysical Journal, 2005 38 pages, 10 figures, accepted for publication in ...
Ann, H. B., Thakur, Parijat
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