Results 1 to 10 of about 357,932 (163)

High Velocity Dispersion in A Rare Grand Design Spiral Galaxy at Redshift z=2.18 [PDF]

Nature, 2012
Although relatively common in the local Universe, only one grand-design spiral galaxy has been spectroscopically confirmed to lie at z>2 (HDFX 28; z=2.011), and may prove to be a major merger that simply resembles a spiral in projection. The rarity of spirals has been explained as a result of disks being dynamically 'hot' at z>2 which may instead favor
Christensen, Charlotte R., Erb, Dawn K., Law, David R., Reddy, Naveen A., Shapley, Alice E., Steidel, Charles C.   +5 more
arxiv   +15 more sources

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

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 galaxies, using 3.6$\mu$m images from the Spitzer Survey of Stellar Structure in Galaxies ...
A. Bittner, Dimitri A. Gadotti, Bruce G. Elmegreen, E. Athanassoula, D. M. Elmegreen, A. Bosma, J. C. Muñoz-Mateos   +6 more
arxiv   +12 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
arxiv   +7 more sources

Grand Design vs. Multi-Armed Spiral Galaxies: Dependence on Galaxy Structure [PDF]

arXiv
We developed an algorithm to use Galaxy Zoo 3D spiral arm masks produced by citizen scientist volunteers to semi-automatically classify spiral galaxies as either multi-armed or grand design spirals. Our final sample consists of 299 multi-armed and 245 grand design galaxies.
Giroux, Mark L., Smith, Beverly J., Struck, Curtis, Watson, Matthew   +3 more
arxiv   +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, 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

Grand Design and Flocculent Spirals in the Spitzer Survey 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.
Albert Bosma, Andrew Yau, Ann, Ann, Armando Gil de Paz, Athanassoula, Athanassoula, Athanassoula, Barry F. Madore, Bertin, Block, Block, Block, Bruce G. Elmegreen, Buta, Buta, Buta, Buta, Buta, Buta, Buta, Buta, Buta, Combes, Combes, Considère, Contopoulos, de Vaucouleurs, Debattista, Debra Meloy Elmegreen, Dennis Zaritsky, Dimitri A. Gadotti, Draine, E. Athanassoula, Eija Laurikainen, Elmegreen, Elmegreen, Elmegreen, Eskridge, Fazio, Gadotti, George Helou, Goldreich, Heikki Salo, Hoyle, Jarkko Laine, Joannah L. Hinz, Jogee, Johan H. Knapen, Juan-Carlos Muñoz-Mateos, Karen L. Masters, Kartik Sheth, Karín Menéndez-Delmestre, Luis C. Ho, Manuel Aravena, Mark Seibert, Meidt, Mendéndez-Delmestre, Michael W. Regan, Oh, Ramin Skibba, Ronald J. Buta, Salo, Santiago Erroz Ferrer, Schlosser, Sellwood, Sellwood, Sharon E. Meidt, Taehyun Kim, Thornley, Thornley, Toomre, Trisha Mizusawa, Visser   +73 more
core   +14 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

Giant molecular clouds in the non-grand design spiral galaxy NGC 6946 [PDF]

The Astrophysical Journal, 2012
We present high spatial resolution observations of Giant Molecular Clouds (GMCs) in the eastern part of the nearby spiral galaxy NGC 6946 obtained with the Combined Array for Research in Millimeter-wave Astronomy (CARMA). We have observed 12CO(1-0), 12CO(
Adam Leroy, Bigiel, Blanc, Blitz, Bolatto, Calzetti, Calzetti, Considère, Crosthwaite, David Rebolledo, de Blok, Donovan Meyer, Elmegreen, Engargiola, Evans, Fazio, Foyle, Fukui, Gil de Paz, Goldsmith, Gutermuth, Heiderman, Helfer, Heyer, Hirota, Jennifer Donovan Meyer, Jin Koda, Kennicutt, Kennicutt, Kim, Koda, Koda, Krumholz, Krumholz, Kuno, Larson, Leroy, Leroy, Leroy, Leroy, Liu, Milam, Miyawaki, Murray, Oka, Ossenkopf, Ostriker, Rahman, Regan, Rieke, Rohlfs, Rosolowsky, Sakamoto, Schlegel, Shetty, Tasker, Tasker, Thornley, Tony Wong, Tosaki, Tully, Wada, Walter, Wong, Wong, Wu, Wyder, Yim   +67 more
core   +5 more sources

Analyzing the cosmic architecture in the vicinity of Grand-design and Flocculent spiral galaxies with Local Geometric Index [PDF]

arXiv, 2023
We explore the environment of 351 grand-design and 541 flocculent spiral galaxies recently identified employing convolutional neural networks from the $17^{th}$ data release of Sloan Digital Sky Survey. We introduce a novel estimator called the Local Geometric Index to quantify the morphology of the local environment of these 892 spirals.
Suman Sarkar, Ganesh Narayanan, Arunima Banerjee   +2 more
arxiv   +5 more sources