Results 81 to 90 of about 184,560 (234)

Photometric structure of the peculiar galaxy ESO 235-G58

, 2004
We present the near-infrared and optical properties of the peculiar galaxy ESO 235-G58, which resembles a late-type ringed barred spiral seen close to face-on.
Arnaboldi, Arnaboldi, Athanassoula, Bell, Bothun, Bothun, Bournaud, Bruzual, Buta, Buta, Buta, Cardelli, de Jong, de Jong, E. Iodice, Erwin, Iodice, Iodice, Iodice, Iodice, Iodice, Jungwiert, K. C. Freeman, Khosroshahi, Knapen, L. S. Sparke, M. Arnaboldi, M. Capaccioli, Makarova, McGaugh, McGregor, Michard, Michard, Möllenhoff, O'Neil, R. Buta, Reshetnikov, Rieke, Salpeter, Schlegel, Scorza, van Driel, van Driel, van Driel, van Gorkom, Walterbos, Whitmore, Wozniak   +47 more
core   +1 more source

Chandra Observation of NGC 1559: Eight Ultraluminous X-Ray Sources Including a Compact Binary Candidate

The Astrophysical Journal, 2023
Despite the 30 yr history of ultraluminous X-ray sources (ULXs) studies, issues such as the majority of their physical natures (i.e., neutron stars, stellar-mass black holes, or intermediate black holes) as well as the accretion mechanisms are still ...
Chen-Hsun Ma, Kwan-Lok Li, You-Hua Chu, Albert K. H. Kong   +3 more
doaj   +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

The Distribution of Barred Galaxies in the Virgo Cluster [PDF]

, 1996
A study of the distribution of barred and nonbarred disk galaxies in the Virgo cluster is presented in an attempt to use the frequency and spatial distribution of galaxies with specific morphological features to study the efficiency of various environmental effects on the evolution of disk galaxies in clusters.
arxiv   +1 more source

A survey of the Wolf–Rayet population of the barred, spiral galaxy NGC 1313 [PDF]

, 2007
We present a VLT/FORS1 survey of Wolf-Rayet (WR) stars in the spiral galaxy NGC 1313. In total, 94 WR candidate sources have been identified from narrow-band imaging.
L. Hadfield, P. Crowther
semanticscholar   +1 more source

The Illustris Simulation: Supermassive Black Hole - Galaxy Connection Beyond the Bulge

, 2017
We study the spiral arm morphology of a sample of the local spiral galaxies in the Illustris simulation and explore the supermassive black hole - galaxy connection beyond the bulge (e.g., spiral arm pitch angle, total stellar mass, dark matter mass, and ...
Berrier, Joel C., Hewitt, Ian B., Koval, Lauren E., Mutlu-Pakdil, Burçin, Seigar, Marc S., Treuthardt, Patrick   +5 more
core   +1 more source

Bar-driven Transport of Molecular Gas to Galactic Centers and Its Consequences [PDF]

, 1999
We study the characteristics of molecular gas in the central regions of spiral galaxies on the basis of our CO(J=1-0) imaging survey of 20 nearby spiral galaxies using the NRO and OVRO millimeter arrays. Condensations of molecular gas at galactic centers
Arimoto N., Bloemen J. B. G. M., Buat V., Casoli F., Dahmen G., Friedli D., Friedli D., Hawarden T. G., Huang J. H., Hummel E., K. Sakamoto, N. Z. Scoville, Noguchi M., S. Ishizuki, S. K. Okumura, Safronov V. S., Sakamoto K., Vila-Costas M. B., Wada K.   +18 more
core   +3 more sources

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

Chaotic Spiral Galaxies

, 2011
We study the role of asymptotic curves in supporting the spiral structure of a N-body model simulating a barred spiral galaxy. Chaotic orbits with initial conditions on the unstable asymptotic curves of the main unstable periodic orbits follow the shape ...
Contopoulos, George, Harsoula, Mirella
core   +1 more source

The Abundance and Properties of Barred Galaxies out to z ∼ 4 Using JWST CEERS Data

The Astrophysical Journal
We present the first estimate of the observed fraction and properties of bars out to z  ∼ 4 using JWST CEERS NIRCam images. We analyze 1770 galaxies with M _⋆  > 10 ^10 M _⊙ at 0.5 ≤ z ≤ 4 and identify barred galaxies from 839 moderately inclined disk ...
Yuchen Guo, Shardha Jogee, Eden Wise, Keith Pritchett Jr., Elizabeth J. McGrath, Steven L. Finkelstein, Kartheik G. Iyer, Pablo Arrabal Haro, Micaela B. Bagley, Mark Dickinson, Jeyhan S. Kartaltepe, Anton M. Koekemoer, Casey Papovich, Nor Pirzkal, L. Y. Aaron Yung, Bren E. Backhaus, Eric F. Bell, Rachana Bhatawdekar, Yingjie Cheng, Luca Costantin, Alexander de la Vega, Mauro Giavalisco, Nimish P. Hathi, Benne W. Holwerda, Peter Kurczynski, Ray A. Lucas, Bahram Mobasher, Pablo G. Pérez-González, Fabio Pacucci   +28 more
doaj   +1 more source