Results 111 to 120 of about 154,367 (172)

Properties of bars in the local universe [PDF]

arXiv, 2008
We studied the fraction and properties of bars in a sample of about 3000 galaxies extracted from SDSS-DR5. This represents a volume limited sample with galaxies located between redshift 0.01-20, and inclination i < 60. Interacting galaxies were excluded from the sample. The fraction of barred galaxies in our sample is 45%.
arxiv  

The Clearing Timescale for Infrared-selected Star Clusters in M83 with HST

The Astrophysical Journal Letters
We present an analysis of Hubble Space Telescope data from Wide Field Camera 3 (WFC3)/Ultraviolet Imaging Spectrometer, WFC3/IR, and the Advanced Camera for Surveys, investigating the young stellar cluster (YSC) population in the face-on spiral galaxy ...
Suyash Deshmukh, Sean T. Linden, Daniela Calzetti, Angela Adamo, Matteo Messa, Kathryn Grasha, Elena Sabbi, Linda Smith, Kelsey E. Johnson   +8 more
doaj   +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

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

, 2023
Luca Costantin, Pablo G. Pérez‐González, Yuchen Guo, Chiara Buttitta, Shardha Jogee, Micaela B. Bagley, Guillermo Barro, Jeyhan S. Kartaltepe, Anton M. Koekemoer, C. Cabello, E. M. Corsini, J. Méndez‐Abreu, Alexander de la Vega, Kartheik G. Iyer, Laura Bisigello, Y. Cheng, L. Morelli, Pablo Arrabal Haro, F. Buitrago, Michael C. Cooper, Avishai Dekel, Mark Dickinson, Steven L. Finkelstein, Mauro Giavalisco, Benne W. Holwerda, Marc Huertas-Company, Ray A. Lucas, Casey Papovich, N. Pirzkal, Lise-Marie Seillé, Jesús Vega-Ferrero, Stijn Wuyts, L. Y. Aaron Yung   +32 more
openalex   +1 more source

Ring or No Ring—Revisiting the Multiphase Nuclear Environment in M31

The Astrophysical Journal
Nuclear rings, prevalent in barred galaxies, are essential to understanding gas transport toward galactic nuclei. However, the peculiar nuclear ring in our neighboring galaxy M31 remains poorly understood.
Zongnan Li, Zhao Su, Sumin Wang, Yufan F. Zhou, Zhiyuan Li, Xuanyi Lyu, Fanyi Meng, Kai Zhang, Di Li, Chaowei Tsai, Jingwen Wu, Jiachang Zhang   +11 more
doaj   +1 more source

Thick disk and pseudobulge formation in a clump cluster

EPJ Web of Conferences, 2012
Bulges in spiral galaxies have been supposed to be classified into two types: classical bulges or pseudobulges. Classical bulges are thought to form by galactic merger with bursty star formation, whereas pseudobulges are suggested to form by secular ...
Inoue S.
doaj   +1 more source

Bar-driven Transport of Molecular Gas in Spiral Galaxies: Observational Evidence [PDF]

arXiv, 1999
The NRO-OVRO CO imaging survey showed that molecular gas was more concentrated to the central kiloparsec in barred spiral galaxies than in their unbarred counterparts. The result provided not only evidence for bar-driven gas transport but also estimates on the mean rate of gas transfer and lower limits to the lifetime of bars.
arxiv  

Hidden Gems on a Ring: Infant Massive Clusters and Their Formation Timeline Unveiled by ALMA, HST, and JWST in NGC 3351

The Astrophysical Journal
We use 0.1″ observations from the Atacama Large Millimeter Array (ALMA), Hubble Space Telescope (HST), and JWST to study young massive clusters (YMCs) in their embedded “infant” phase across the central starburst ring in NGC 3351.
Jiayi Sun, Hao He, Kyle Batschkun, Rebecca C. Levy, Kimberly Emig, M. Jimena Rodríguez, Hamid Hassani, Adam K. Leroy, Eva Schinnerer, Eve C. Ostriker, Christine D. Wilson, Alberto D. Bolatto, Elisabeth A. C. Mills, Erik Rosolowsky, Janice C. Lee, Daniel A. Dale, Kirsten L. Larson, David A. Thilker, Leonardo Ubeda, Bradley C. Whitmore, Thomas G. Williams, Ashley T. Barnes, Frank Bigiel, Mélanie Chevance, Simon C. O. Glover, Kathryn Grasha, Brent Groves, Jonathan D. Henshaw, Rémy Indebetouw, María J. Jiménez-Donaire, Ralf S. Klessen, Eric W. Koch, Daizhong Liu, Smita Mathur, Sharon Meidt, Shyam H. Menon, Justus Neumann, Francesca Pinna, Miguel Querejeta, Mattia C. Sormani, Robin G. Tress   +40 more
doaj   +1 more source

Morphological Evolution of Disk Galaxies and Their Concentration, Asymmetry, and Clumpiness (CAS) Properties in Simulations across Toomre’s Q Parameter

The Astrophysical Journal
We investigate the morphological and structural evolution of disk galaxies in simulations for a wide range of Toomre’s Q parameters. In addition to the inspection of conventional bar modes, we compute the concentration, asymmetry, and clumpiness (CAS ...
T. Chantavat, S. Yuma, P. Malelohit, T. Worrakitpoonpon   +3 more
doaj   +1 more source

Circumnuclear regions in barred spiral galaxies — I. Near-infrared imaging [PDF]

, 2000
D. Pérez-Ramírez, J. H. Knapen, R. F. Peletier, Seppo Laine, René Doyon, Daniel Nadeau   +5 more
openalex   +1 more source