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Cool Dust in the Outer Ring of NGC 1291

Hinz, J. L. and Engelbracht, C. W. and Skibba, R. and Crocker, A. and Donovan Meyer, J. and Sandstrom, K. and Walter, F. and Montiel, E. and Johnson, B. D. and Hunt, L. and Aniano, G. and Armus, L. and Calzetti, D. and Dale, D. A. and Draine, B. and Galametz, M. and Groves, B. and Kennicutt, R. C. and Meidt, S. E. and Murphy, E. J. and Tabatabaei, F. S. (2012) Cool Dust in the Outer Ring of NGC 1291. Astrophysical Journal, 756 (1). Art. No. 75. ISSN 0004-637X. doi:10.1088/0004-637X/756/1/75.

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We examine Herschel Space Observatory images of one nearby prototypical outer ring galaxy, NGC 1291, and show that the ring becomes more prominent at wavelengths longer than 160 μm. The mass of cool dust in the ring dominates the total dust mass of the galaxy, accounting for at least 70% of it. The temperature of the emitting dust in the ring (T = 19.5 ± 0.3 K) is cooler than that of the inner galaxy (T = 25.7 ± 0.7 K). We discuss several explanations for the difference in dust temperature, including age and density differences in the stellar populations of the ring versus the bulge.

Item Type:Article
Related URLs:
URLURL TypeDescription
Crocker, A.0000-0001-8513-4945
Donovan Meyer, J.0000-0002-3106-7676
Sandstrom, K.0000-0002-4378-8534
Walter, F.0000-0003-4793-7880
Hunt, L.0000-0001-9162-2371
Aniano, G.0000-0001-9015-2654
Armus, L.0000-0003-3498-2973
Calzetti, D.0000-0002-5189-8004
Dale, D. A.0000-0002-5782-9093
Draine, B.0000-0002-0846-936X
Galametz, M.0000-0002-0283-8689
Groves, B.0000-0002-9768-0246
Kennicutt, R. C.0000-0001-5448-1821
Meidt, S. E.0000-0002-6118-4048
Murphy, E. J.0000-0001-7089-7325
Additional Information:© 2012 American Astronomical Society. Received 2012 April 18; accepted 2012 July 2; published 2012 August 17. J.L.H. thanks R. Buta for a preview of his B and I images of NGC 1291 and for helpful discussions. The following institutes have provided hardware and software elements to the SPIRE project: University of Lethbridge, Canada; NAOC, Beijing, China; CEA Saclay, CEA Grenoble, and OAMP in France; IFSI, Rome, and University of Padua, Italy; IAC, Tenerife, Spain; Stockholm Observatory, Sweden; Cardiff University, Imperial College London, UCL-MSSL, STFC-RAL, UK ATC Edinburgh, and the University of Sussex in the UK. Funding for SPIRE has been provided by the national agencies of the participating countries and by internal institute funding: CSA in Canada; NAOC in China; CNES, CNRS, and CEA in France; ASI in Italy;MCINN in Spain; Stockholm Observatory in Sweden; STFC in the UK; and NASA in the U.S.A. Additional funding support for some instrument activities has been provided by ESA. This research has made use of the NASA/IPAC Extragalactic Database (NED) which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration.
Subject Keywords:galaxies: individual (NGC 1291); galaxies: photometry; galaxies: spiral
Issue or Number:1
Record Number:CaltechAUTHORS:20121030-114826431
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Official Citation:Cool Dust in the Outer Ring of NGC 1291 J. L. Hinz et al. 2012 ApJ 756 75
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:35177
Deposited By: Jason Perez
Deposited On:30 Oct 2012 20:52
Last Modified:09 Nov 2021 23:13

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