Results 111 to 120 of about 1,112 (128)

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).
D. Colombo
semanticscholar   +3 more sources

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 ...
Bruce G. Elmegreen
openalex   +3 more sources

Blue and near-infrared surface photometry of spiral structure in 34 nonbarred grand design and flocculent galaxies

The Astrophysical Journal Supplement Series, 1984
On a examine les profils radiaux du disque et la structure des bras spiraux des 34 galaxies. On donne les profils azimutaux et les diagrammes couleur-amplitude des bras spiraux. On discute des modeles d'evolution de la couleur. Ces modeles sont utilises pour determiner l'amplitude des spirales de densite stellaire sous jacentes et le renforcement ...
D. M. Elmegreen, Bruce G. Elmegreen
openalex   +3 more sources

The Car–Sgr arm as outlined by superclouds and the grand design of the Galaxy

, 1998
It is found that H I superclouds are regularly spaced along the very long Car-Sgr arm, the mutual distances being mostly 0.1 and 0.2 in units of the Solar distance to the centre.
Y. Efremov
semanticscholar   +1 more source

Gravitational instability and spatial regularity of the gas clouds and young stellar population in spiral arms of NGC 628

Astronomy & Astrophysics
There is a clear contradiction between the characteristic spacings in observed regular chains of star-forming regions in the spiral arms of galaxies (∼500 pc) and the estimates of the wavelength of gravitational instability in them ($>1$ kpc).
V. Kostiuk, A. Gusev, A. Marchuk, E. Shimanovskaya   +3 more
semanticscholar   +1 more source

Grand Design and Flocculent Spirals in the Spitzer Survey of Stellar Structure in Galaxies (S4G)

Astrophysical Journal, 2011
D. M. Elmegreen, S G Team
openalex   +2 more sources

The role of molecular clouds in the star formation process as observed in two grand design spiral galaxies

, 1987
S. D. Lord
openalex   +2 more sources

Grand design and flocculent spirals in the Spitzer survey of stellar structure in galaxies (S⁴G)

2011
Spiral arm properties of 46 galaxies in the Spitzer Survey of Stellar Structure in Galaxies (S(4)G) were measured at 3.6 mu m, where extinction is small and the old stars dominate. The sample includes flocculent, multiple arm, and grand design types with a wide range of Hubble and bar types.
Elmegreen, Debra Meloy, Elmegreen, Bruce G, Yau, Andrew, Athanassoula, E, Bosma, Albert, Buta, Ronald J, Helou, George, Ho, Luis C, Gadotti, Dimitri A, Knapen, Johan H, Laurikainen, Eija, Madore, Barry F, Masters, Karen L, van der Wel, Sharon Meidt, Menendez-Delmestre, Karin, Regan, Michael W, Salo, Heikki, Sheth, Kartik, Zaritsky, Dennis, Aravena, Manuel, Skibba, Ramin, Hinz, Joannah L, Laine, Jarkko, Gil de Paz, Armando, Munoz-Mateos, Juan-Carlos, Seibert, Mark, Mizusawa, Trisha, Kim, Taehyun, Erroz Ferrer, Santiago   +28 more
openaire   +1 more source

On the Relative Frequency of Flocculent and Grand Design Spiral Structures in Barred Galaxies

, 1988
D. M. Elmegreen, Bruce G. Elmegreen
openalex  

Time Scales for the Persistence of Grand Design Spirals in Group Galaxies

, 1982
Bruce G. Elmegreen, D. M. Elmegreen
openalex