Results 101 to 110 of about 130 (116)

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, E V Polyachenko, O V Khoruzhii   +2 more
exaly   +2 more sources

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.
exaly   +2 more sources

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
openaire   +1 more source

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 ...
openaire   +1 more source

Gas and stellar spiral arms and their offsets in the grand-design spiral galaxy M51

Monthly Notices of the Royal Astronomical Society, 2017
Fumi Egusa, Junichi Baba, Erin Mentuch Cooper   +2 more
exaly  

A nuclear grand-design spiral within the normal disc spiral of NGC 5248

Monthly Notices of the Royal Astronomical Society, 1999
S Laine, R Doyon, D Nadeau
exaly  

J1649+2635: a grand-design spiral with a large double-lobed radio source

Monthly Notices of the Royal Astronomical Society, 2015
Sylvain Veilleux, Ray Norris, Tony Mroczkowski   +2 more
exaly  

GIANT MOLECULAR CLOUDS AND STAR FORMATION IN THE NON-GRAND DESIGN SPIRAL GALAXY NGC 6946

Astrophysical Journal, 2012
David Rebolledo, Adam Leroy, Jennifer Donovan Meyer   +2 more
exaly  

Open clusters as spiral structure tracers in our galaxy

Astronomical and Astrophysical Transactions, 1992
A V Loktin
exaly  

PANORAMIC: Discovery of an ultra-massive grand-design spiral galaxy at z ∼ 5.2

Astronomy and Astrophysics
Rachel Bezanson, Daniel Schaerer, Katherine E Whitaker   +2 more
exaly