Results 121 to 130 of about 8,434 (230)

N-body Simulations of Galaxy Bars Generated by Satellite Collisions: Effects of the Impact Geometry

The Astrophysical Journal
Bars, a common and important structure in disk galaxies, can be induced by galaxy interactions. Although there have been some studies on bar formation in flybys or collisions, the vast parameter space still leaves many scenarios that require further ...
Yufan Fane Zhou, Zhiyuan Li, Hui Li
doaj   +1 more source

The two-phase formation history of spiral galaxies traced by the cosmic evolution of the bar fraction

, 2012
We study the evolution of galactic bars and the link with disk and spheroid formation in a sample of zoom-in cosmological simulations. Our simulation sample focuses on galaxies with present-day stellar masses in the 10^10-10^11 Msun range, in field and ...
Aguerri, Athanassoula, Barazza, Berentzen, Bournaud, Bournaud, Bournaud, Bournaud, Bureau, Chiappini, Combes, Combes, Dalcanton, de Vaucouleurs, Debattista, Elmegreen, Elmegreen, Elmegreen, Elmegreen, Eskridge, Fisher, Friedli, Frédéric Bournaud, Gerin, Gilmore, Heller, Jogee, Katarina Kraljic, Kennicutt, Knapen, Laine, Laurikainen, Lee, Maiolino, Marie Martig, Martig, Martig, Martig, Martinez-Valpuesta, Menéndez-Delmestre, Miwa, Peng, Peng, Pfenniger, Robertson, Sargent, Sellwood, Seth, Shen, Sheth, Sheth, Sérsic, Teyssier, van den Bergh, Weinberg, Yoachim, Zoccali   +56 more
core   +3 more sources

The Impact of Bar-induced Noncircular Motions on the Measurement of Galactic Rotation Curves

The Astrophysical Journal
We study the impact of bar-induced noncircular motions on the derivation of galactic rotation curves (RCs) using hydrodynamic simulations and observational data from the PHANGS-ALMA survey.
Jie Liu, Zhi Li, Juntai Shen
doaj   +1 more source

Barred Galaxies in the Abell 901/2 Supercluster with STAGES

, 2009
We present a study of bar and host disk evolution in a dense cluster environment, based on a sample of ~800 bright (MV
Abazajian, Amanda Heiderman, Andy Taylor, Asmus Böhm, Athanassoula, Athanassoula, Balogh, Barazza, Barden, Bell, Bell, Block, Boris Häußler, Buta, Catherine Heymans, Chien Y. Peng, Christian Wolf, Combes, Combes, Daniel H. McIntosh, David Bacon, de Vaucouleurs, Debattista, Debattista, Dubinski, Eelco van Kampen, Elmegreen, Elmegreen, Eric F. Bell, Eskridge, Eskridge, Fabio D. Barazza, Fisher, Gray, Heiderman, Heller, Irina Marinova, Jedrzejewski, Jogee, Jogee, Jogee, Jogee, Jogee, Jogee, John A. R. Caldwell, Kassin, Klaus Meisenheimer, Knapen, Knud Jahnke, Koopmann, Kormendy, Kyle Lane, Laine, Laine, Laurikainen, Laurikainen, Lutz Wisotzki, Marco Barden, Marinova, Martinez-Valpuesta, Meghan E. Gray, Menéndez-Delmestre, Michael Balogh, Mulchaey, Persic, Rachel Somerville, Ravindranath, Reese, Regan, Romano-Díaz, Schneider, Sebastian F. Sánchez, Sellwood, Shardha Jogee, Sheth, Sheth, Sheth, van den Bergh, Weinberg, Weinzirl, Xianzhong Zheng   +80 more
core   +1 more source

Inner Workings: Astronomers are redrawing our corner of the Milky Way. [PDF]

Proc Natl Acad Sci U S A, 2021
Croswell K.
europepmc   +1 more source

Supernovae and their host galaxies - II. The relative frequencies of supernovae types in spirals

, 2014
We present an analysis of the relative frequencies of different supernova (SN) types in spirals with various morphologies and in barred or unbarred galaxies.
Adibekyan, V. Zh., Aramyan, L. S., Bertin, E., de Lapparent, V., Gomes, J. M., Hakobyan, A. A., Kunth, D., Mamon, G. A., Nazaryan, T. A., Petrosian, A. R., Turatto, M.   +10 more
core   +2 more sources

Inner Molecular Rings in Barred Galaxies: BIMA SONG CO Observations

, 2002
Although inner star-forming rings are common in optical images of barred spiral galaxies, observational evidence for the accompanying molecular gas has been scarce.
Buta R., Combes F., Kartik Sheth, Krause M., Michael W. Regan, Peter J, Schwarz M. P., Stuart N. Vogel, Teuben, , van der Kruit P.   +9 more
core   +1 more source

Orbital Support and Evolution of CX/OX Structures in Boxy/Peanut Bars

The Astrophysical Journal
Barred galaxies exhibit boxy/peanut or X-shapes (BP/X) protruding from their disks in edge-on views. Two types of BP/X morphologies exist depending on whether the X-wings meet at the center (CX) or are off-centered (OX).
Behzad Tahmasebzadeh, Shashank Dattathri, Monica Valluri, Juntai Shen, Ling Zhu, Vance Wheeler, Ortwin Gerhard, Sandeep Kumar Kataria, Leandro Beraldo e Silva, Kathryne J. Daniel   +9 more
doaj   +1 more source

Astronomia ex machina: a history, primer and outlook on neural networks in astronomy. [PDF]

R Soc Open Sci, 2023
Smith MJ, Geach JE.
europepmc   +1 more source

The Tully-Fisher Relation of Barred Galaxies

, 2003
We present new data exploring the scaling relations, such as the Tully-Fisher relation (TFR), of bright barred and unbarred galaxies. A primary motivation for this study is to establish whether barredness correlates with, and is a consequence of, virial ...
Bottema R., Corsini E. M., David R. Andersen, Hans‐Walter Rix, Klypin A., Lauren A. MacArthur, Matthew A. Bershady, Stephane Courteau, Tully R. B., Zhao H.   +9 more
core   +1 more source