Results 191 to 200 of about 7,946 (225)
Quantitative Morphology of Bars in Spiral Galaxies
The Astronomical Journal, 1995 openaire +1 more source
Dust penetrated quantitative classifcation of nearby barred spiral galaxies
, 2012 Asha Tailor
openalex +1 more source
Some of the next articles are maybe not open access.
Related searches:
Related searches:
Physics Letters A, 2000
Abstract Here we put forward some arguments in favour of the existence of slow bars. More then a half of spiral galaxies have in their central regions a bar — a structure in the form of triaxial ellipsoid. Historically two models of the bar were developed — those of the so called “slow” and “fast” bars. In both cases the bar is in some resonance with
A.M. Fridman, O.V. Khoruzhii
openaire +1 more source
Abstract Here we put forward some arguments in favour of the existence of slow bars. More then a half of spiral galaxies have in their central regions a bar — a structure in the form of triaxial ellipsoid. Historically two models of the bar were developed — those of the so called “slow” and “fast” bars. In both cases the bar is in some resonance with
A.M. Fridman, O.V. Khoruzhii
openaire +1 more source
The Secrets of Barred Spiral Galaxies
Global Research Journal, 2022Black holes start their lives as big dead stars in the depth of the universe. As they move towards the outer universe they gather cosmic dust, asteroids, planets, eventually they get bigger. The gravitational force increases and continues this process for billions of years. When an asteroid enters the gravitational field of an ever-growing dead star, it
openaire +1 more source
The barred spiral structure of galaxies
Chinese Astronomy and Astrophysics, 1984Abstract We have carried out a preliminary analysis of barred spirals using a gas-dynamical model. By means of the method of integral transform given in a previous paper [1], an analytical solution has been obtained which is in fair agreement with observations.
null Chen Zhen-cheng +2 more
openaire +1 more source
STRUCTURES OUT OF CHAOS IN BARRED-SPIRAL GALAXIES
International Journal of Bifurcation and Chaos, 2012We review the dynamical mechanisms we have found to support the morphological features in barred-spiral galaxies based on chaotic motions of stars in their gravitational fields. These morphological features are the spiral arms, that emerge out of the ends of the bar, but also shape the bar itself.
openaire +1 more source
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.
openaire +1 more source
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.
openaire +1 more source
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.
openaire +2 more sources
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,
openaire +1 more source