Results 1 to 10 of about 8,510 (179)

Grand Design versus Multiarmed Spiral Galaxies: Dependence on Galaxy Structure [PDF]

The Astronomical Journal
We 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, Matthew Watson, Mark L. Giroux, Curtis Struck   +3 more
doaj   +4 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, 2009
We present hydrodynamical models of the grand design spiral M51 (NGC 5194), and its interaction with its companion NGC 5195. Despite the simplicity of our models, our simulations capture the present day spiral structure of M51 remarkably well, and even ...
Agertz, Balbus, Bate, Bate, Bate, Bate, Benz, Bertin, Binney, Blitz, Bottema, Buta, Byrd, Byrd, C. L. Dobbs, C. Theis, Chakrabarti, Chamberlin, Corder, Cox, De Avillez, Dobbs, Dobbs, Dobbs, Dobbs, Dobbs, Dobbs, Donner, Egusa, Elmegreen, Elmegreen, Elmegreen, Elmegreen, Elmegreen, Feitzinger, Gittins, Goldreich, Goldreich, Hernquist, Hitschfeld, J. E. Pringle, Jog, Julian, Jáchym, Kendall, Kim, Koda, Kormendy, Kuijken, La Vigne, Li, Lin, Lin, M. R. Bate, Mark, Martínez-García, Meidt, Merrifield, Monaghan, Oh, Patrikeev, Patsis, Petit, Petsch, Pierce, Press, Price, Price, Price, Price, Price, Rand, Renaud, Roberts, Robertson, Romeo, Rots, Salo, Salo, Schinnerer, Sellwood, Shetty, Shetty, Shetty, Slyz, Sofue, Springel, Springel, Sundelius, Tamburro, Tasker, Tasker, Theis, Theis, Tilanus, Toomre, Toomre, Toomre, Toomre, Toomre, Tosaki, Tully, Vogel, Wada, Wada, Westpfahl, Yáñez, Zaritsky   +107 more
core   +10 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.
Baba, Junichi
core   +5 more sources

Star formation in grand-design, spiral galaxies. Young, massive clusters in the near-infrared [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 ...
Dottori, H., Grosbol, P.
core   +6 more sources

A direct test of density wave theory in a grand-design spiral galaxy [PDF]

Nature Astronomy, 2018
The exact nature of the arms of spiral galaxies is still an open question1. It has been widely assumed that spiral arms in galaxies with two distinct symmetrical arms are the products of density waves that propagate around the disk, with the spiral arms ...
Thomas Peterken, M. R. Merrifield, Alfonso Aragón‐Salamanca, Niv Drory, Coleman Krawczyk, Karen L. Masters, Anne-Marie Weijmans, Kyle B. Westfall   +7 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.
Fumi Egusa, Erin Mentuch Cooper, Jin Koda, Junichi Baba   +3 more
semanticscholar   +5 more sources

High velocity dispersion in a rare grand-design spiral galaxy at redshift z = 2.18 [PDF]

Nature, 2012
Although grand-design spiral galaxies are relatively common in the local Universe, only one has been spectroscopically confirmed to lie at redshift z > 2 (HDFX 28; z = 2.011); and it may prove to be a major merger that simply resembles a spiral in ...
David R. Law, Alice E. Shapley, Charles C. Steidel, Naveen A. Reddy, Charlotte Christensen, Dawn K. Erb   +5 more
semanticscholar   +10 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
We 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
A. Bittner, Dimitri A. Gadotti, Bruce G. Elmegreen, E. Athanassoula, D. M. Elmegreen, A. Bosma, J. C. Muñoz-Mateos   +6 more
semanticscholar   +8 more sources

A grand-design spiral galaxy with an ordered magnetic field at redshift 2.6 as resolved with ALMA and gravitational lensing [PDF]

Monthly Notices of the Royal Astronomical Society: Letters
Magnetic fields play an important role in the evolution of galaxies and in shaping the dynamics of their inter-stellar medium. However, the formation history of magnetic fields from initial seed-fields to well-ordered systems is not clear.
W. de Roo, S. Vegetti, Devon Powell, S W Ndiritu, Rüdiger Pakmor, J. P. McKean   +5 more
semanticscholar   +5 more sources

Spatially resolved properties of the grand-design spiral galaxy UGC 9837: a case for high-redshift 2-D observations [PDF]

Astronomy & Astrophysics, 2011
Context. We carry out a detailed 2-D study of the ionised gas in the local universe galaxy UGC 9837. In nearby galaxies, like the galaxy in question here, the spatial distribution of the physical properties can be studied in detail, providing benchmarks ...
K. Viironen, S. F. Sánchez, E. Mármol-Queraltó, J. Iglésias-Páramo, D. Mast, R. A. Marino, D. Cristóbal-Hornillos, A. Gil de Paz, Glenn van de Ven, J. M. Vı́lchez, L. Wisotzki   +10 more
semanticscholar   +9 more sources