Results 121 to 130 of about 7,683 (149)

Grand Design, Multiple Arm, and Flocculent Spiral Galaxies

Annals of the New York Academy of Sciences, 1990
Les proprietes et les origines possibles de 3 types de structure spirale galactique sont passees en ...
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Observational Manifestation of Chaos in Grand Design Spiral Galaxies

2003
To study dynamic properties of the gaseous disk of the grand design spiral galaxy NGC 3631 we calculate the Lyapunov characteristic numbers (LCN) for different families of streamlines in the disk. For the trajectories near separatrices of the giant vortices and near saddle points presenting in the velocity field, the LCN turned out to be positive.
Alexei M. Fridman, Roald Z. Sagdeev, Oleg V. Khoruzii, Evgenii V. Polyachenko   +3 more
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Non-circular motion estimation of the grand-design spiral galaxy NGC 628

AIP Conference Proceedings, 2013
I present a harmonic decomposition analysis of the grand-design spiral galaxy NGC 628 using the H I data from The H I Nearby Galaxy Survey (THINGS), Walter et al., Astron. J. 136, 2563 (2008). The harmonic decomposition analysis allows the estimation of the peculiar motion magnitude of the galaxy not counted in the rotation of the disk.
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Observational Manifestation of Chaos in the Gaseous Disk of the Grand Design Spiral Galaxy NGC 3631

Space Science Reviews, 2002
The main goal of the paper is to demonstrate the presence of chaotic trajectories in the gaseous disk of a real spiral galaxy. As an example we have chosen NGC 3631. First, we show the stationarity of the 3-D velocity field restored from the observed line-of-sight velocity field of the gaseous disk.
A. M. Fridman, O. V. Khoruzhii, E. V. Polyachenko   +2 more
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Alaknanda: A rare grand design spiral galaxy at z~4 with JWST

Presented in the last Galaxies session (after coffee break) on 16th September 2025.
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A Milky Way-like barred spiral galaxy at a redshift of 3

Nature, 2023
Luca Costantin, Chiara Buttitta, Micaela Bagley   +2 more
exaly  

Spiral morphology in an intensely star-forming disk galaxy more than 12 billion years ago

Science, 2021
Takafumi Tsukui, Satoru Iguchi
exaly