Grand Design versus Multiarmed Spiral Galaxies: Dependence on Galaxy Structure [PDF]
The Astronomical JournalWe developed an algorithm to use Galaxy Zoo 3D spiral arm masks produced by citizen scientist volunteers to semiautomatically classify spiral galaxies as either multiarmed or grand design spirals. Our final sample consists of 299 multiarmed and 245 grand
Beverly J. Smith +3 more
doaj +4 more sources
GIANT MOLECULAR CLOUDS AND STAR FORMATION IN THE NON-GRAND DESIGN SPIRAL GALAXY NGC 6946 [PDF]
The Astrophysical Journal, 2012 23 pages, 21 figures, 3 tables.
Jin Koda +4 more
semanticscholar +8 more sources
Short-term dynamical evolution of grand-design spirals in barred galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2015 We investigate the short-term dynamical evolution of stellar grand-design spiral arms in barred spiral galaxies using a three-dimensional (3D) $N$-body/hydrodynamic simulation. Similar to previous numerical simulations of unbarred, multiple-arm spirals, we find that grand-design spiral arms in barred galaxies are not stationary, but rather dynamic ...
Junichi Baba
semanticscholar +6 more sources
Simulations of the grand design galaxy M51: a case study for analysing tidally induced spiral structure [PDF]
Monthly Notices of the Royal Astronomical Society, 2010 23 pages, 20 figures, accepted for publication in ...
Matthew R. Bate +3 more
semanticscholar +11 more sources
Gas and stellar spiral arms and their offsets in the grand-design spiral galaxy M51 [PDF]
Monthly Notices of the Royal Astronomical Society, 2016 Theoretical studies on the response of interstellar gas to a gravitational potential disc with a quasi-stationary spiral arm pattern suggest that the gas experiences a sudden compression due to standing shock waves at spiral arms. This mechanism, called a galactic shock wave, predicts that gas spiral arms move from downstream to upstream of stellar ...
Junichi Baba +4 more
semanticscholar +5 more sources
GRAND DESIGN AND FLOCCULENT SPIRALS IN THESPITZERSURVEY OF STELLAR STRUCTURE IN GALAXIES (S4G) [PDF]
The Astrophysical Journal, 2011 Spiral arm properties of 46 galaxies in the Spitzer Survey of Stellar Structure in Galaxies (S4G) were measured at 3.6mu, 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.
George Helou +36 more
core +12 more sources
The sequence of spiral arm classes: Observational signatures of persistent spiral density waves in grand-design galaxies [PDF]
Proceedings of the International Astronomical Union, 2019 AbstractWe investigate how the properties of spiral arms relate to other fundamental galaxy properties. To this end, we use previously published measurements of those properties, and our own measurements of arm-interarm luminosity contrasts for a large sample of galaxies, using 3.6μm images from the Spitzer Survey of Stellar Structure in Galaxies ...
Bittner, A. +6 more
semanticscholar +8 more sources
Star formation in grand-design, spiral galaxies [PDF]
Astronomy & Astrophysics, 2012 Deep, near-infrared JHK-maps were observed for 10 nearby, grand-design, spiral galaxies using HAWK-I/VLT to study the distribution of young stellar clusters in them and thereby determine whether strong spiral perturbations can influence star formation.
Horacio Alberto Dottori, Preben Grosbøl
core +6 more sources
Analysis of Resonances in Grand Design Spiral Galaxies [PDF]
The Astrophysical Journal, 2001 49 pages, 24 figures, 2 tables.
Reinaldo R. de Carvalho +3 more
openaire +5 more sources
Star formation in grand design and flocculent spiral galaxies
The Astrophysical Journal, 1985 An examination is conducted of the colors and neutral hydrogen contents of spiral galaxies which have been classified in the Elmegreen and Elmegreen arm morphology system. Using these data, possible differences between the star formation activity in spiral galaxies with and without classic spiral arms are delineated.
W. Romanishin
openaire +3 more sources