Results 1 to 10 of about 8,504 (230)

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, Ryohei Kawabe, Kotaro Kohno, Toshiki Saito, Shoichiro Mizukoshi, Daisuke Iono, Tomonari Michiyama, Yoichi Tamura, Christopher C. Hayward, Hideki Umehata   +9 more
doaj   +2 more sources

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., Athanassoula E., Block D. L., Chapelon S., de Vaucouleurs G., E. Laurikainen, Firmani C., H. Salo, Martinet L., Merrifield M. R., Noguchi M., Persic M., R. Buta, S. Vasylyev, Sellwood J. A., Wozniak H.   +15 more
core   +3 more sources

Barred spiral galaxies [PDF]

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
openalex   +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.
M. Romero-Gómez, E. Athanassoula, Josep J. Masdemont, C. García-Gómez   +3 more
openalex   +6 more sources

Age distributions of star clusters in spiral and barred galaxies as a test for theories of spiral structure [PDF]

, 2010
We consider models of gas flow in spiral galaxies in which the spiral structure has been excited by various possible mechanisms: a global steady density wave, self-gravity of the stellar disc and an external tidal interaction, as well as the case of a ...
Anders, Bash, Bastian, Bate, Beckman, Benz, Bertin, Bik, Binney, Bottema, C. L. Dobbs, Chandar, Cox, De Grijs, Dobbs, Dobbs, Dobbs, Dobbs, Dobbs, Dobbs, Dubinski, Efremov, Elmegreen, Elmegreen, Fall, Fall, Fujii, Fujimoto, Gonzalez, Heyer, Hohl, Hunter, J. E. Pringle, Kaleida, Kalnajs, Karl, Kendall, Koda, Kormendy, Kuijken, Lin, Lubow, Martínez-García, Muraoka, Ostriker, Popping, Price, Price, Regan, Roberts, Roberts, Roberts, Sandstrom, Scheepmaker, Sellwood, Sellwood, Sheth, Theis, Toomre, Toomre, Tutukov, Wozniak, Zurita   +62 more
core   +2 more sources

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, C. J. Peterson
openalex   +2 more sources

Starbursts in Barred Spiral Galaxies. III. Definition of a homogeneous sample of Starburst Nucleus Galaxies [PDF]

Astronomy and Astrophysics Supplement Series, 1997
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
T. Contini, S. Considère, E. Davoust
openalex   +4 more sources

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, Eric E. Martínez-García   +1 more
openalex   +4 more sources

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, Athanassoula, Binney, C. Kalapotharakos, Contopoulos, Contopoulos, Contopoulos, Contopoulos, Contopoulos, Contopoulos, de Zeeuw, Fathi, G. Contopoulos, Grosbol, Harsoula, Kalnajs, Kaufmann, Lin, Lynden-Bell, M. Harsoula, Merritt, Patsis, Patsis, Romero-Gomez, Romero-Gomez, Shen, Sparke, Toomre, Tsoutsis, Voglis, Voglis   +30 more
core   +3 more sources

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 ...
Maura Brunetti, C. Chiappini, D. Pfenniger   +2 more
openalex   +4 more sources