Hostname: page-component-78c5997874-g7gxr Total loading time: 0 Render date: 2024-11-04T19:37:51.116Z Has data issue: false hasContentIssue false
  • English
  • Français

Warps and Accretion

Published online by Cambridge University Press:  05 December 2011

Gyula I. G. Józsa
Gyula I. G. Józsa*
Affiliation:
ASTRON (NWO), Oude Hoogeveensedijk 4, 7991 PD Dwingeloo, The Netherlands email: [email protected]
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Warps are a basic feature of disk galaxies. Usually they occur at radii where the optical disk fades and become most pronounced in the outermost gaseous disks.

As such, warps present a massive reservoir to replenish star forming material in the inner, star forming disks. Furthermore, some possible excitation mechanisms for warps connect their formation to the accretion of extragalctic material. Interactions or mergers with gas-rich companions or the direct accretion of the ambient intergalactic medium might lead to the formation of warps, at the same time supplementing fuel to maintain star formation in galactic disks.

Employing a number of H i studies of warped galaxies, including ultra-deep observations of the prototype warped galaxies NGC 5907 and NGC 4013, I discuss whether the observed kinematics may show evidence for a connection of warps and accretion from the ambient medium.

Keywords

galaxies: evolutiongalaxies: kinematics and dynamicsgalaxies: ISMgalaxies: formationgalaxies: intergalactic mediumgalaxies: spiralgalaxies: structure
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 6 , Symposium S277: Tracing the Ancestry of Galaxies (on the land of our ancestors) , December 2010 , pp. 71 - 74
Copyright
Copyright © International Astronomical Union 2011

References

Ann, H. B. & Park, J.-C. 2006 New A, 11, 293CrossRefGoogle Scholar
Bailin, J., Kawata, D., Gibson, B. K., et al. 2005, ApJ, 627, L17CrossRefGoogle Scholar
Briggs, F. H. 1990, ApJ, 352, 15CrossRefGoogle Scholar
Binney, J. 1992, ARA&A, 30, 51Google Scholar
Corbelli, E. & Schneider, S. E. 1997, ApJ, 479, 244CrossRefGoogle Scholar
Dubinski, J. & Kuijken, K. 1995, ApJ, 442, 492CrossRefGoogle Scholar
Fraternali, F. & Binney, J. J. 2008, MNRAS, 386, 395CrossRefGoogle Scholar
García-Ruiz, I., Sancisi, R., & Kuijken, K. 2002, A&A, 394, 769Google Scholar
Hunter, C. & Toomre, A. 1969, ApJ, 155, 747CrossRefGoogle Scholar
Józsa, G. I. G. 2007, A&A, 468, 903Google Scholar
Kuijken, K. 1991, ApJ, 376, 467CrossRefGoogle Scholar
Lynden-Bell, D. 1965, MNRAS, 129, 299CrossRefGoogle Scholar
Martínez-Delgado, D., Pohlen, M., Gabany, R. J., Majewski, S. R., Peñarrubia, J., & Palma, C. 2009, ApJ, 692, 955CrossRefGoogle Scholar
Martínez-Delgado, D., Peñarrubia, J., Gabany, R. J., Trujillo, I., Majewski, S. R., & Pohlen, M. 2008, ApJ, 689, 184CrossRefGoogle Scholar
Nelson, R. W. & Tremaine, S. 1995, MNRAS, 275, 897CrossRefGoogle Scholar
Ostriker, E. C. & Binney, J. J. 1989, MNRAS, 237, 785CrossRefGoogle Scholar
Reshetnikov, V. & Combes, F. 1998, A&A, 337, 9Google Scholar
Reshetnikov, V. & Combes, F. 1999, A&AS, 138, 101Google Scholar
Roškar, R., Debattista, V. P., Brooks, A. M., Quinn, T. R., Brook, C. B., Governato, F., Dalcanton, J. J., & Wadsley, J. 2010, MNRAS, 408, 783CrossRefGoogle Scholar
Sánchez-Blázquez, P., Courty, S., Gibson, B. K., & Brook, C. B. 2009, MNRAS, 398, 591CrossRefGoogle Scholar
Shapiro, P. R. & Field, G. B. 1976, ApJ, 205, 762CrossRefGoogle Scholar
Sánchez-Saavedra, M. L., Battaner, E., & Florido, E. 1990, MNRAS, 246, 458Google Scholar
Sánchez-Saavedra, M. L., Battaner, E., Guijarro, A., López-Corredoira, M., & Castro-Rodríguez, N. 2003, A&A, 399, 457Google Scholar
Sancisi, R. 1976, A&A, 53, 159Google Scholar
Sancisi, R., Fraternali, F., Oosterloo, T., & vanAAAAderAAAAHulst, T. 2008, A&A Rev., 15, 189Google Scholar
Shen, J. & Sellwood, J. A. 2006, MNRAS, 370, 2CrossRefGoogle Scholar
Schwarzkopf, U. & Dettmar, R.-J. 2001, A&A, 373, 402Google Scholar
Sparke, L. S. & Casertano, S. 1988, MNRAS, 234, 873CrossRefGoogle Scholar
Revaz, Y. & Pfenniger, D. 2004, A&A, 425, 67Google Scholar
Roy, N. 2010, ApJ, 723, 781CrossRefGoogle Scholar
Shang, Z., Brinks, E., Zheng, Z., et al. 1998, ApJ, 504, L23CrossRefGoogle Scholar
vanAAAAderAAAAKruit, P. C. 2007, A&A, 466, 883Google Scholar