Results 41 to 50 of about 7,649 (143)

Detection of Molecular Clouds in the Interarm of the Flocculent Galaxy NGC 5055

, 2003
We present high-resolution (~ 4") 12CO (J = 1 - 0) mapping observations with high - velocity resolution (~ 2.6 km s^{-1}) toward the disk of flocculent galaxy NGC 5055, using the Nobeyama Millimeter Array in order to study the physical properties of the ...
Hasegawa, Takashi, Kuno, Nario, Nakanishi, Kouichiro, Shioya, Yasuhiro, Tosaki, Tomoka   +4 more
core   +2 more sources

A New Statistical Analysis of the Morphology of Spiral Galaxies

The Astronomical Journal
Morphology is the starting point for understanding galaxies. Elmegreen et al. classified spiral galaxies into flocculent, multiple-arm, and grand-design galaxies based on the regularity of their spiral arm structure.
Junye Wei, Ye Xu, Zehao Lin, Chaojie Hao, Yingjie Li, Dejian Liu, Shuaibo Bian   +6 more
doaj   +1 more source

On the relative frequency of flocculent and grand design spiral structures in barred galaxies

The Astrophysical Journal, 1989
The bars in late-type spiral galaxies (SBbc to SBm and SABbc to SABm) show little correlation with grand design spiral structure, unlike the bars in early-type galaxies. This is further evidence for two different types of bars in the SB morphological class, and two different types of ovals in the SAB class.
Bruce G. Elmegreen, Debra Meloy Elmegreen   +1 more
openaire   +1 more source

The Flocculent Structure of the Inner Milky Way Disk

The Astronomical Journal
Observations of H i published in 1957 by Westerhout and Schmidt were presented as showing a global face-on view of the spiral structure in the Milky Way. Since then, many studies have attempted to improve on the early map, perhaps presupposing our Galaxy
Dana S. Balser, W. B. Burton
doaj   +1 more source

Metallicity Gradient of a Lensed Face-on Spiral Galaxy at Redshift 1.49

, 2011
We present the first metallicity gradient measurement for a grand-design face-on spiral galaxy at z~1.5. This galaxy has been magnified by a factor of 22$\times$ by a massive, X-ray luminous galaxy cluster MACS\,J1149.5+2223 at z=0.544.
Asplund, Bouwens, Chapman, Chiappini, Chiappini, Dickinson, Erb, Fan, Fu, Hopkins, Hou, Jones, Kewley, Kewley, Kewley, Molla, Osterbrock, Rich, Rupke, Rupke, Smith, van Zee   +21 more
core   +3 more sources

The magnetic fields of large Virgo cluster spirals: Paper II [PDF]

, 2012
The Virgo cluster of galaxies provides excellent conditions for studying interactions of galaxies with the cluster environment. Both the high-velocity tidal interactions and effects of ram pressure stripping by the intracluster gas can be investigated in
Baars, Beck, Beck, Beck, Cayatte, Cayatte, Chemin, Chung, Chung, Chyży, Chyży, Chyży, Chyży, Condon, Crowl, Drzazga, Gioia, K. T. Chyży, Koopmann, M. Soida, M. Urbanik, M. Weżgowiec, Oosterloo, Otmianowska-Mazur, Paturel, Pfrommer, R. Beck, Roediger, Rudnick, Schulz, Soida, Soida, Taylor, Tschöke, Tüllmann, Urbanik, Veilleux, Vollmer, Vollmer, Vollmer, Vollmer, Vollmer, Weiler, Weżgowiec, Weżgowiec, Yoshida   +45 more
core   +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.
openaire   +1 more source

Dynamically Driven Evolution of the Interstellar Medium in M51 [PDF]

, 2009
Massive star formation occurs in giant molecular clouds (GMCs); an understanding of the evolution of GMCs is a prerequisite to develop theories of star formation and galaxy evolution. We report the highest-fidelity observations of the grand-design spiral
Bock, Douglas C.-J., Carpenter, John M., Corder, Stuartt A., Hawkins, David, Hodges, Mark, Kemball, Athol, Koda, Jin, La Vigne, Misty A., Lamb, James W., Patience, Jenny, Plambeck, Richard L., Potts, Ashley E., Pound, Marc W., Sargent, Anneila I., Sawada, Tsuyoshi, Scott, Stephen L., Scoville, Nick, Teuben, Peter, Voguel, Stuart N., White, Stephen M., Woody, David P., Wright, Melvyn C. H., Zauderer, B. Ashley   +22 more
core  

Morphology and Kinematics of the Gas in M51: How Interaction with NGC 5195 Has Molded the Structure of Its Arms

The Astrophysical Journal
The Whirlpool Galaxy is a well-studied grand design galaxy with two major spiral arms, and a large satellite NGC 5195. The arms both show long uniform sections with perturbations (“kinks” or sharp turns) in specific regions.
Joan Font, John E. Beckman, Benoît Epinat, Clare L. Dobbs, Miguel Querejeta   +4 more
doaj   +1 more source

On the Spiral Structure of the Milky Way Galaxy

, 2010
We consider the possible pattern of the overall spiral structure of the Galaxy, using data on the distribution of neutral (atomic), molecular, and ionized hydrogen, on the base of the hypothesis of the spiral structure being symmetric, i.e.
A. Cabrera-Lavers, A. D. Chernin, A. E. Piskunov, A. K. Dambis, A. Luna, A. M. Mel’nik, A. M. Mel’nik, B. Elmegreen, B. G. Elmegreen, B. G. Elmegreen, B. G. Elmegreen, C. Clarke, C. Clarke, C. L. Dobbs, D. A. Grabelsky, D. A. Grabelsky, D. M. Gittins, E. Churchwell, E. S. Levine, H. Nakanishi, H. Nakanishi, H. Weaver, J. A. Selwood, J. P. Vallée, J. Vaucouleurs de, L. G. Hou, L. N. Berdnikov, M. J. Reid, M. Messineo, M. S. Seigar, M.S. Seigar, N. M. McClure-Griffiths, P. A. James, R. A. Benjamin, R. Beck, R. C. Kennicutt Jr., R. Shetty, R. X. McGee, S. T. Strasser, T. M. Dame, Yu. N. Efremov, Yu. N. Efremov, Yu. N. Efremov, Yu. N. Efremov, Yu. N. Efremov, Yu. N. Efremov, Yu. N. Efremov, Yu. N. Efremov, Yu. N. Efremov   +48 more
core   +1 more source