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NGC922 – a new drop-through ring galaxy

Wong, O. I. and Seibert, M. (2006) NGC922 – a new drop-through ring galaxy. Monthly Notices of the Royal Astronomical Society, 370 (4). pp. 1607-1611. ISSN 0035-8711. doi:10.1111/j.1365-2966.2006.10589.x.

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We have found the peculiar galaxy NGC 922 to be a new drop-through ring galaxy using multiwavelength (ultraviolet–radio) imaging and spectroscopic observations. Its ‘C’-shaped morphology and tidal plume indicate a recent strong interaction with its companion which was identified with these observations. Using numerical simulations we demonstrate that the main properties of the system can be generated by a high-speed off-axis drop-through collision of a small galaxy with a larger disc system, thus making NGC 922 one of the nearest known collisional ring galaxies. While these systems are rare in the local Universe, recent deep Hubble Space Telescope images suggest they were more common in the early Universe.

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Seibert, M.0000-0002-1143-5515
Additional Information:© 2006 The Authors. Journal compilation © 2006 RAS. Accepted 2006 May 18. Received 2006 April 11; in original form 2005 November 24. Article first published online: 7 Jul 2006. Based on observations with the NASA Galaxy Evolution Explorer (GALEX). GALEX is operated for NASA by the California Institute of Technology under NASA contract NAS5-98034. This research was supported by a NASA GALEX Guest Investigator grant GALEXGI04-0105-0009 and NASA LTSA grant NAG5-13083 to GRM. OIW acknowledges the assistance received from the PORES scheme and thanks M. Whiting for proofreading this work. This publication makes use of data products from 2MASS, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Centre/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation.
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Subject Keywords: galaxies: individual: NGC 922; Galaxy: structure
Issue or Number:4
Record Number:CaltechAUTHORS:20110616-103700854
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Official Citation:NGC 922 – a new drop-through ring galaxy (pages 1607–1611) O. I. Wong, G. R. Meurer, K. Bekki, D. J. Hanish, R. C. Kennicutt, J. Bland-Hawthorn, E. V. Ryan-Weber, B. Koribalski, V. A. Kilborn, M. E. Putman, J. S. Heiner, R. L. Webster, R. J. Allen, M. A. Dopita, M. T. Doyle, M. J. Drinkwater, H. C. Ferguson, K. C. Freeman, T. M. Heckman, C. Hoopes, P. M. Knezek, M. J. Meyer, M. S. Oey, M. Seibert, R. C. Smith, L. Staveley-Smith, D. Thilker, J. Werk and M. A. Zwaan Article first published online: 7 JUL 2006 | DOI: 10.1111/j.1365-2966.2006.10589.x
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:24024
Deposited By: Ruth Sustaita
Deposited On:16 Jun 2011 17:58
Last Modified:09 Nov 2021 16:20

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