Results 21 to 30 of about 367,666 (163)

A Cloud-Scale View of the Molecular Gas Disk in the Whirlpool Galaxy and Beyond [PDF]

EPJ Web of Conferences, 2022
The nearby galaxy M51 (also known as the Whirlpool galaxy) hosts an iconic grand-design spiral pattern and both IRAM facilities conducted the first cloud-scale (∼50 pc resolution) survey of the molecular gas reservoir across a the disk of a massive star ...
Schinnerer Eva, Pety Jérôme, Bešlić Ivana, Eibensteiner Cosima, Stuber Sophia, Leroy Adam, Hughes Annie, Usero Antonio, Bigiel Frank   +8 more
doaj   +2 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
openalex   +3 more sources

Simulations of spiral galaxies with an active potential: molecular cloud formation and gas dynamics [PDF]

, 2008
We describe simulations of the response of a gaseous disc to an active spiral potential. The potential is derived from an N-body calculation and leads to a multi-armed time-evolving pattern. The gas forms long spiral arms typical of grand design galaxies, although the spiral pattern is asymmetric.
C. L. Dobbs, Dobbs C. L., Dobbs C. L., Elmegreen B. G., Grosbol P. J., Handbury M. J., I. A. Bonnell, Knapen J. H., Monaghan J. J., Patsis P. A., Taff L. G.   +10 more
arxiv   +4 more sources

A multiwavelength study of spiral structure in galaxies. II. Spiral arms in deep optical observations [PDF]

arXiv, 2023
In this paper, we look to analyse the spiral features of grand-design, multiarmed, and flocculent spiral galaxies using deep optical imaging from DESI Legacy Imaging Surveys. We explore the resulting distributions of various characteristics of spiral structure beyond the optical radius, such as the distributions of azimuthal angle, the extent of spiral
A. Mosenkov, A. D. Panasyuk, Savanah Turner, Crystal-Lynn Bartier, M. Skryabina, A. A. Marchuk, S. S. Savchenko, Jakob Bergstedt, V. Reshetnikov, I. Chugunov   +9 more
arxiv   +3 more sources

Spiral structure in nearby galaxies I. Sample, data analysis, and overview of results [PDF]

, 2011
This paper, the first of two, introduces an observational study of spiral structure in galaxies chosen from the SINGS survey. Near infrared (NIR) and optical data are used to produce mass surface density maps, and from these the morphology of the disc is examined. The aim of this work is to characterise the prevalence of spiral structure in this sample
Bell, Bell, Bertin, Block, Block, Block, Bottema, Braun, Buta, Byrd, C. Clarke, Canzian, Clarke, Daigle, de Blok, Dicaire, Dobbs, Dobbs, Duley, Elmegreen, Elmegreen, Elmegreen, Elmegreen, Elmegreen, Elmegreen, Elmegreen, Elmegreen, Elmegreen, Fazio, Flagey, Gerola, Gittins, Grosbøl, Helou, Israel, Jiménez-Vicente, Karachentsev, Karachentseva, Kendall, Kennicutt, Kennicutt, Kilborn, Knapen, Korchagin, Kormendy, Lin, Lin, Lindblad, Mueller, Oh, Peng, Pisano, R. C. Kennicutt, Regan, Relaño, Roberts, Roberts, S. Kendall, Salo, Schweizer, Seigar, Seigar, Sellwood, Sellwood, Semelin, Sil’chenko, Taga, Theis, Thornley, Tokunaga, Toomre   +70 more
arxiv   +3 more sources

The Lifetime of Grand Design [PDF]

Mon.Not.Roy.Astron.Soc.Lett.366:L17-L21,2006, 2005
The lifetime of the structure in grand design spiral galaxies is observationally ill-determined, but is essentially set by how accurately the pattern's rotation can be characterized by a single angular pattern speed. This paper derives a generalized version of the Tremaine-Weinberg method for observationally determining pattern speeds, in which the ...
Lin, M. R. Merrifield, R. J. Rand, S. E. Meidt   +3 more
arxiv   +5 more sources

A panchromatic spatially resolved analysis of nearby galaxies – II. The main sequence – gas relation at sub-kpc scale in grand-design spirals [PDF]

Monthly Notices of the Royal Astronomical Society, 2020
ABSTRACT In this work, we analyse the connection between gas availability and the position of a region with respect to the spatially resolved main-sequence (MS) relation. Following the procedure presented in Enia et al. (2020), for a sample of five face-on, grand design spiral galaxies located on the MS we obtain estimates of stellar ...
L. Morselli, G. Rodighiero, Andrea Enia, E. Corbelli, V. Casasola, L. Rodríguez-Muñoz, A. Renzini, Sandro Tacchella, Ivano Baronchelli, S. Bianchi, P. Cassata, A. Franceschini, C. Mancini, M. Negrello, P. Popesso, Michael Romano   +15 more
openalex   +9 more sources

J1649+2635: A Grand-Design Spiral with a Large Double-Lobed Radio Source [PDF]

, 2014
We report the discovery of a grand-design spiral galaxy associated with a double-lobed radio source. J1649+2635 (z = 0.0545) is a red spiral galaxy with a prominent bulge that it is associated with a L$_{1.4{\rm GHz}}\sim$10$^{24}$WHz$^{-1}$ double-lobed
Duffin, Ryan, Keel, Bill, Lacy, Mark, Mao, Minnie Y., Momjian, Emmanuel, Morrison, Glenn, Mroczkowski, Tony, Neff, Susan, Norris, Ray P., Owen, Frazer, Schmitt, Henrique, Toy, Vicki, Veilleux, Sylvain   +12 more
core   +5 more sources

Environment Dependence of Disk Morphology of Spiral Galaxies [PDF]

, 2014
We analyze the dependence of disk morphology (arm class, Hubble type, bar type) of nearby spiral galaxies on the galaxy environment by using local background density ($\Sigma_{n}$), projected distance ($r_{p}$), and tidal index ($TI$) as measures of the environment.
Ann, H. B.
arxiv   +4 more sources

Molecules in galaxies. V - CO observations of flocculent and grand-design spirals

The Astrophysical Journal, 1987
New carbon monoxide (1-0) observations of 29 spiral galaxies are presented and combined with previously existing data for 74 galaxies in order to study the dependence of the average CO surface brightness on the spiral-arm class. The total sample shows no significant correlation between the CO surface brightness and the presence or absence of grand ...
A. A. Stark, Bruce G. Elmegreen, D. Chance   +2 more
openalex   +3 more sources