Results 21 to 30 of about 7,683 (149)

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., Gadotti, D. A., Elmegreen, B. G., Athanassoula, E., Elmegreen, D. M., Bosma, A., Muñoz-Mateos, J.   +6 more
openaire   +3 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.
Elmegreen, Debra Meloy, Elmegreen, Bruce G., Yau, Andrew, Athanassoula, E., Bosma, Albert, Buta, Ronald J., Helou, George, Ho, Luis C., Gadotti, Dimitri A., Knapen, Johan H., Laurikainen, Eija, Madore, Barry, Masters, Karen L., Meidt, Sharon E., Menendez-Delmestre, Karin, Regan, Michael W., Salo, Heikki, Sheth, Kartik, Zaritsky, Dennis, Aravena, Manuel, Skibba, Ramin, Hinz, Joannah L., Laine, Jarkko, Paz, Armando, Munoz-Mateos, Juan-Carlos, Seibert, Mark, Mizusawa, Trisha, Kim, Taehyun, Erroz Ferrer, Santiago   +28 more
openaire   +6 more sources

Uncovering Spiral Structure in Flocculent Galaxies [PDF]

, 1996
We present K'(2.1 micron) observations of four nearby flocculent spirals, which clearly show low-level spiral structure and suggest that kiloparsec-scale spiral structure is more prevalent in flocculent spirals than previously supposed.
Adamson A. J., Block D. L., Braine J., Casali M., Elmegreen B. G., Heckman T. M., Michele D. Thornley   +6 more
core   +2 more sources

Dawes Review 4: Spiral Structures in Disc Galaxies [PDF]

, 2014
The majority of astrophysics involves the study of spiral galaxies, and stars and planets within them, but how spiral arms in galaxies form and evolve is still a fundamental problem. Major progress in this field was made primarily in the 1960s, and early
Baba, Junichi, Dobbs, Clare
core   +1 more source

PANORAMIC: Discovery of an ultra-massive grand-design spiral galaxy at z ∼ 5.2 [PDF]

Astronomy & Astrophysics
We report the discovery of an ultra-massive grand-design red spiral galaxy, named Zhúlóng (Torch Dragon), at zphot = 5.2−0.2+0.3 in the JWST PANORAMIC survey; it is the most distant bulge+disk galaxy candidate with spiral arms known to date. Zhúlóng displays an extraordinary combination of properties: (1) a classical bulge centered in a large, face-on ...
Mengyuan Xiao, Christina C. Williams, Pascal A. Oesch, David Elbaz, Miroslava Dessauges-Zavadsky, Rui Marques-Chaves, Longji Bing, Zhiyuan Ji, Andrea Weibel, Rachel Bezanson, Gabriel Brammer, Caitlin Casey, Aidan P. Cloonan, Emanuele Daddi, Pratika Dayal, Andreas L. Faisst, Marijn Franx, Karl Glazebrook, Anne Hutter, Jeyhan S. Kartaltepe, Ivo Labbe, Guilaine Lagache, Seunghwan Lim, Benjamin Magnelli, Felix Martinez, Michael V. Maseda, Themiya Nanayakkara, Daniel Schaerer, Katherine E. Whitaker   +28 more
openaire   +2 more sources

Clues to the formation of spiral structure in M51 from the ages and locations of star clusters [PDF]

, 2017
We determine the spatial distributions of star clusters at different ages in the grand-design spiral galaxy M51 using a new catalog based on multi-band images taken with the Hubble Space Telescope (HST). These distributions, when compared with the spiral
Calzetti, Daniela, Chandar, Rupali, Chien, L-H, Dinino, Daiana, Dobbs, Clare, Kennicutt, Robert C, Querejeta, Miguel, Regan, Michael, Schinnerer, Eva, van der Wel, Sharon Meidt, Whitmore, Bradley C   +10 more
core   +1 more source

Star formation rates and the kinematics of gas in the spiral arms of NGC 628

, 2015
Relations between star formation rates along the spiral arms and the velocities of gas inflow into the arms in grand-design galaxy NGC 628 were studied.
Efremov, Yury N., Gusev, Alexander S., Sakhibov, Firouz   +2 more
core   +1 more source

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 ...
M Romano, P Popesso, M Negrello, C Mancini, A Franceschini, P Cassata, S Bianchi, I Baronchelli, S Tacchella, A Renzini, L Rodríguez-Muñoz, V Casasola, E Corbelli, A Enia, G Rodighiero, L Morselli   +15 more
openaire   +6 more sources

Simulations of dual morphology in spiral galaxies [PDF]

, 2002
Gas and stars in spiral galaxies are modelled with the DUAL code, using hydrodynamic and N-body techniques. The simulations reveal morphological differences mirroring the dual morphologies seen in B and K' band observations of many spiral galaxies.
Berman, S. L.
core   +3 more sources

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