Results 1 to 10 of about 8,434 (230)

Age distributions of star clusters in spiral and barred galaxies as a test for theories of spiral structure [PDF]

, 2010
We consider models of gas flow in spiral galaxies in which the spiral structure has been excited by various possible mechanisms: a global steady density wave, self-gravity of the stellar disc and an external tidal interaction, as well as the case of a ...
Clare L. Dobbs, J. E. Pringle
openalex   +3 more sources

A Milky Way-like barred spiral galaxy at a redshift of 3. [PDF]

Nature, 2023
Costantin L, Pérez-González PG, Guo Y, Buttitta C, Jogee S, Bagley MB, Barro G, Kartaltepe JS, Koekemoer AM, Cabello C, Corsini EM, Méndez-Abreu J, de la Vega A, Iyer KG, Bisigello L, Cheng Y, Morelli L, Arrabal Haro P, Buitrago F, Cooper MC, Dekel A, Dickinson M, Finkelstein SL, Giavalisco M, Holwerda BW, Huertas-Company M, Lucas RA, Papovich C, Pirzkal N, Seillé LM, Vega-Ferrero J, Wuyts S, Yung LYA.   +32 more
europepmc   +3 more sources

Dynamically Driven Evolution of Molecular Gas in the Barred Spiral Galaxy M83 Traced by CO J = 2–1/1–0 Line Ratio Variations

The Astrophysical Journal
We show the variations of the CO J = 2–1/1–0 line ratio ( R _21/10 ) across the barred spiral galaxy M83, using the 46 pc resolution data from the Atacama Large Millimeter/submillimeter Array. The R _21/10 map clearly evidences the systematic large-scale
Jin Koda, Fumi Egusa, Akihiko Hirota, Amanda M Lee, Tsuyoshi Sawada, Fumiya Maeda   +5 more
doaj   +2 more sources

Formation of Major Types of Galaxies Based on the Energy Circulation Theory

Reports in Advances of Physical Sciences, 2022
The standard cosmology can answer almost nothing about how the structure of a galaxy is formed. It expects a supermassive black hole at the center and dark matter in the halo to explain the circulation of stars and its velocity.
Shigeto Nagao
doaj   +1 more source

First Look at z > 1 Bars in the Rest-frame Near-infrared with JWST Early CEERS Imaging

The Astrophysical Journal Letters, 2023
Stellar bars are key drivers of secular evolution in galaxies and can be effectively studied using rest-frame near-infrared (NIR) images, which trace the underlying stellar mass and are less impacted by dust and star formation than rest-frame UV or ...
Yuchen Guo, Shardha Jogee, Steven L. Finkelstein, Zilei Chen, Eden Wise, Micaela B. Bagley, Guillermo Barro, Stijn Wuyts, Dale D. Kocevski, Jeyhan S. Kartaltepe, Elizabeth J. McGrath, Henry C. Ferguson, Bahram Mobasher, Mauro Giavalisco, Ray A. Lucas, Jorge A. Zavala, Jennifer M. Lotz, Norman A. Grogin, Marc Huertas-Company, Jesús Vega-Ferrero, Nimish P. Hathi, Pablo Arrabal Haro, Mark Dickinson, Anton M. Koekemoer, Casey Papovich, Nor Pirzkal, L. Y. Aaron Yung, Bren E. Backhaus, Eric F. Bell, Antonello Calabrò, Nikko J. Cleri, Rosemary T. Coogan, M. C. Cooper, Luca Costantin, Darren Croton, Kelcey Davis, Avishai Dekel, Maximilien Franco, Jonathan P. Gardner, Benne W. Holwerda, Taylor A. Hutchison, Viraj Pandya, Pablo G. Pérez-González, Swara Ravindranath, Caitlin Rose, Jonathan R. Trump, Alexander de la Vega, Weichen Wang   +47 more
doaj   +1 more source

Exploring the Magnetic Field Geometry in NGC 891 with SOFIA/HAWC+

The Astronomical Journal, 2023
Stratospheric Observatory For Infrared Astronomy/High-resolution Airborne Wideband Camera-plus 154 μ m Far-Infrared polarimetry observations of the well-studied edge-on galaxy NGC 891 are analyzed and compared to simple disk models with ordered (planar ...
Jin-Ah Kim, Terry Jay Jones, C. Darren Dowell   +2 more
doaj   +1 more source

J0107a: A Barred Spiral Dusty Star-forming Galaxy at z = 2.467

The Astrophysical Journal Letters, 2023
Dusty star-forming galaxies (DSFGs) are among the most massive and active star-forming galaxies during the cosmic noon. Theoretical studies have proposed various formation mechanisms of DSFGs, including major merger-driven starbursts and secular star ...
Shuo Huang, Ryohei Kawabe, Kotaro Kohno, Toshiki Saito, Shoichiro Mizukoshi, Daisuke Iono, Tomonari Michiyama, Yoichi Tamura, Christopher C. Hayward, Hideki Umehata   +9 more
doaj   +1 more source

Star formation efficiency in the Barred Spiral Galaxy NGC 4303 [PDF]

, 2010
We present new $^{12}$CO(J=1-0) observations of the barred galaxy NGC 4303 using the Nobeyama 45m telescope (NRO45) and the Combined Array for Research in Millimeter-wave Astronomy (CARMA). The H$\alpha$ images of barred spiral galaxies often show active
Alonso-Herrero, Arimoto, Bigiel, Calzetti, Colina, Corder, de Vaucouleurs, Egusa, Egusa, Gezari, Gezari, Helfer, Jin Koda, Kennicutt, Koda, Koda, Koopmann, Kuno, Kurono, Laine, Leroy, Rieko Momose, Sachiko K. Okumura, Sakamoto, Sakamoto, Sault, Sawada, Schinnerer, Scoville, Sheth, Sheth, Strong, Tamburro, Tschöke, Tsuyoshi Sawada, Wong   +35 more
core   +2 more sources

Dense Cloud Formation and Star Formation in a Barred Galaxy [PDF]

, 2012
We investigate the properties of massive, dense clouds formed in a barred galaxy and their possible relation to star formation, performing a two-dimensional hydrodynamical simulation with the gravitational potential obtained from the 2Mass data from the ...
A. Habe, A. Hirota, Athanassoula, Bigiel, Binney, Bonnell, D. Namekata, Dobbs, Dopita, Downes, Gerritsen, Habing, Hirota, Huchtmeier, Jarrett, K. Sorai, Kennicutt, Kim, Kim, Krumholz, Larson, Lundgren, Lundgren, M. Nimori, Mckee, Momose, Muraoka, Namekata, Padoan, Sakamoto, Schmidt, Sheth, Solomon, Sorai, Soria, Spaans, Tasker, Tasker, Tasker, Thilker, Wada, Wada, Wada, Y. Watanabe   +43 more
core   +2 more sources

The Visibility of Galactic Bars and Spiral Structure At High Redshifts [PDF]

, 2002
We investigate the visibility of galactic bars and spiral structure in the distant Universe by artificially redshifting 101 B-band CCD images of local spiral galaxies from the Ohio State University Bright Spiral Galaxy Survey. Our artificially redshifted
Abraham R. G., Abraham R. G., Glazebrook K., Jay A. Frogel, Laura F. Whyte, Michael R. Merrifield, Paul B. Eskridge, Richard Pogge, Roberto G. Abraham, Sidney van den Bergh   +9 more
core   +2 more sources