Results 41 to 50 of about 7,888 (222)

Effect of bars on the galaxy properties

, 2016
Aims: With the aim of assessing the effects of bars on disc galaxy properties, we present an analysis of different characteristics of spiral galaxies with strong, weak and without bars.
Alonso, Sol, Coldwell, Georgina, Vera, Matias   +2 more
core   +1 more source

On the Link Between Central Black Holes, Bar Dynamics, and Dark Matter Halos in Spiral Galaxies [PDF]

, 2011
The discovery of a relationship between supermassive black hole (SMBH) mass and spiral arm pitch angle (P) is evidence that SMBHs are tied to the overall secular evolution of a galaxy.
Amber D. Sierra, Athanassoula, Athanassoula, Athanassoula, Bandara, Bell, Bell, Block, Booth, Buta, Buta, Buta, Buta, Byrd, Canzian, Catinella, Cisternas, Claud H. S. Lacy, Considère, Contopoulos, Daniel Kennefick, Das, Davis, de Grijs, de Vaucouleurs, Debattista, Egusa, Ferrarese, Ferrarese, Garcia, Garcia-Gomez, Gebhardt, Gebhardt, Grouchy, Heikki Salo, Ho, Ho, Hubble, Ismaeel Al-Baidhany, Jogee, Julia Kennefick, Kalnajs, Kennicutt, Kormendy, Kormendy, Laurikainen, Laurikainen, Laurikainen, Laurikainen, Lin, Lynden Bell, Marc S. Seigar, Mathewson, Merlin, Márquez, Orban de Xivry, Patrick Treuthardt, Paturel, Persic, Puerari, Rautiainen, Rautiainen, Ringermacher, Roberts, Salo, Salo, Satyapal, Satyapal, Schröder, Schwarz, Seigar, Seigar, Seigar, Seigar, Seigar, Seigar, Sheth, Tremaine, Treuthardt, van den Bosch, Volonteri, Weiner   +81 more
core   +1 more source

Formation of the spiral structure in SB galaxies [PDF]

Astronomy Letters, 2001
We consider a scenario of formation of the spiral structure in barred galaxies. This scenario includes the new non-resonant mechanism of elongation of spirals, due to the characteristic behaviour of the gravitational potential beyond the principal spiral arms.
Evgenii V. Polyachenko, Valerij L. Polyachenko   +1 more
openaire   +3 more sources

Short-term dynamical evolution of grand-design spirals in barred galaxies

, 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.
Baba, Junichi
core   +1 more source

A New Mechanism for Radial Migration in Galactic Disks: Spiral-Bar Resonance Overlap [PDF]

, 2010
While it has long been known that a large number of short-lived transient spirals can cause stellar migration, here we report that another mechanism is also effective at mixing disks of barred galaxies.
Antoja, B. Famaey, Binney, Bland-Hawthorn, Combes, Daflon, Dehnen, Dehnen, Drimmel, Edvardsson, Elmegreen, Freeman, Freeman, Heller, Henry, I. Minchev, Jalali, Jenkins, Jenkins, Lépine, Masset, Meidt, Meidt, Mihalas, Minchev, Minchev, Minchev, Quillen, Quillen, Rautiainen, Roškar, Salo, Sellwood, Sellwood, Sygnet   +34 more
core   +3 more sources

Comparison of physical characteristics of mass and luminosity function of disk systems in barred and unbarred spiral galaxies

مجلة بغداد للعلوم
Among the most important ways to investigate galaxies' distribution over cosmic time is the luminosity function LF in terms of baryonic disc mass ψS(Mb), magnitude  .
Al Najm M.N., Y. E. Rashed , H. H. AL-Dahlaki   +2 more
doaj   +1 more source

Stellar Bars in Isolated Gas-rich Spiral Galaxies Do Not Slow Down

The Astrophysical Journal, 2023
Elongated bar-like features are ubiquitous in galaxies, occurring at the centers of approximately two-thirds of spiral disks in the nearby Universe. Due to gravitational interactions between the bar and the other components of galaxies, it is expected ...
Angus Beane, Lars Hernquist, Elena D’Onghia, Federico Marinacci, Charlie Conroy, Jia Qi, Laura V. Sales, Paul Torrey, Mark Vogelsberger   +8 more
doaj   +1 more source

Spirals and Rings in Barred Galaxies by the ROTASE Model

International Journal of Physics, 2021
This paper extends the application of the ROTASE model for the formation of spiral arms of disc galaxies, questions and confusions from readers about this model are addressed. The optical trail effect behind the spiral arm rotation is the natural consequence of the model.
openaire   +4 more sources

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

Detection of CO(J=1-0) Emission from Barred Spiral Galaxies at z~0.1

, 2011
We present the results of CO (J=1-0) observations towards nine barred spiral galaxies at z=0.08-0.25 using the 45-m telescope at Nobeyama Radio Observatory (NRO). This survey is the first one specialized for barred spiral galaxies in this redshift range.
Kuno, Nario, Matsui, Kana, Sorai, Kazuo, Watanabe, Yoshimasa   +3 more
core   +1 more source