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Malin 1: A Deeper Look

Published online by Cambridge University Press:  05 March 2013

Lesa Moore*
Department of Physics, Macquarie University, Sydney NSW 2109, Australia
Quentin A. Parker
Department of Physics, Macquarie University, Sydney NSW 2109, Australia Anglo-Australian Observatory, PO Box 296, Epping NSW 2121, Australia
CCorresponding author. E-mail:
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Our R-band data show that the optical light from Malin 1 corresponds well with the >2-arcmin extent of the galaxy's Hı content and continues well beyond previously published V-band optical light radial profiles. Analysis of our image yields improved understanding of the galaxy's properties. We measure ellipticity of 0.20 ± 0.03, implying inclination of 38 ± 3°, and we trace the radial profile to 77arcsec. A single dusty spiral arm is also weakly discernable, and is consistent with the rotation direction of the Hı and spiral structure of the inner disk. Possible scenarios for the origin of the spiral structure are discussed.

Research Article
Copyright © Astronomical Society of Australia 2006


Barth, A. J. 2007, AJ, 133, 1085Google Scholar
Bland-Hawthorn, J., Shopbell, P. L. & Malin, D. F. 1993, AJ, 106, 2154Google Scholar
Bland-Hawthorn, J., Vlajić, M., Freeman, K. C. & Draine, B. T. 2005, ApJ, 629, 239 CrossRefGoogle Scholar
Bothun, G. D., Impey, C. D., Malin, D. F. & Mould, J. R. 1987, AJ, 94, 23 Google Scholar
Braine, J., Herpin, F. & Radford, S. J. E. 2000, A&A, 358, 494 Google Scholar
Impey, C. & Bothun, G. 1989, ApJ, 341, 89 Google Scholar
Katsiyannis, A. C., Kemp, S. N., Berry, D. S. & Meaburn, J. 1998, A&AS, 132, 387 Google Scholar
Kennicutt, R. C. Jr., AJ, 344, 685 Google Scholar
Matthews, L. D., van Driel, W. & Monnier-Ragaigne, D. 2001, A&A, 365, 1 Google Scholar
Parker, Q. A. & Malin, D. 1999, PASA, 16, 288 Google Scholar
Peñarrubia, J., McConnachie, A. & Babul, A. 2006, ApJ, 650, L33 CrossRefGoogle Scholar
Phookun, B., Vogel, S. N. & Mundy, L. G. 1993, ApJ, 418, 113 Google Scholar
Pickering, T. E., Impey, C. D., van Gorkom, J. H. & Bothun, G. D. 1997, AJ, 114, 1858CrossRefGoogle Scholar
Radford, S. J. E. 1992, A&A, 262, 13 Google Scholar