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Herschel-ATLAS: The dust energy balance in the edge-on spiral galaxy UGC4754

Baes, M. and Frayer, D. (2010) Herschel-ATLAS: The dust energy balance in the edge-on spiral galaxy UGC4754. Astronomy and Astrophysics, 518 . Art. No. L39. ISSN 0004-6361.

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We use Herschel PACS and SPIRE observations of the edge-on spiral galaxy UGC4754, taken as part of the H-ATLAS SDP observations, to investigate the dust energy balance in this galaxy. We build detailed SKIRT radiative models based on SDSS and UKIDSS maps and use these models to predict the far-infrared emission. We find that our radiative transfer model underestimates the observed FIR emission by a factor of two to three. Similar discrepancies have been found for other edge-on spiral galaxies based on IRAS, ISO, and SCUBA data. Thanks to the good sampling of the SED at FIR wavelengths, we can rule out an underestimation of the FIR emissivity as the cause for this discrepancy. Instead we support highly obscured star formation that contributes little to the optical extinction as a more probable explanation.

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Additional Information:© 2010 ESO. Received 31 March 2010, Accepted 7 April 2010, Published online 16 July 2010. Herschel is an ESA space observatory with science instruments provided by European-led principal- investigator consortia and with important participation from NASA. This work used data from the UKIDSS DR5 and SDSS DR7. The UKIDSS project is defined in Lawrence et al. (2007) and uses the UKIRT Wide Field Camera (WFCAM; Casali et al. 2007). Funding for the SDSS and SDSS-II has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, the National Science Foundation, the US Department of Energy, the National Aeronautics and Space Administration, the Japanese Monbukagakusho, the Max Planck Society, and the Higher Education Funding Council for England.
Funding AgencyGrant Number
Alfred P. Sloan FoundationUNSPECIFIED
Department of Energy (DOE)UNSPECIFIED
Japanese MonbukagakushoUNSPECIFIED
Max Planck SocietyUNSPECIFIED
England Higher Education Funding CouncilUNSPECIFIED
Subject Keywords:radiative transfer, dust, extinction, galaxies: ISM, infrared: galaxies
Record Number:CaltechAUTHORS:20101124-131053671
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Official Citation:Herschel-ATLAS: The dust energy balance in the edge-on spiral galaxy UGC 4754 M. Baes, J. Fritz, D. A. Gadotti, D. J. B. Smith, L. Dunne, E. da Cunha, A. Amblard, R. Auld, G. J. Bendo, D. Bonfield, D. Burgarella, S. Buttiglione, A. Cava, D. Clements, A. Cooray, A. Dariush, G. de Zotti, S. Dye, S. Eales, D. Frayer, J. Gonzalez-Nuevo, D. Herranz, E. Ibar, R. Ivison, G. Lagache, L. Leeuw, M. Lopez-Caniego, M. Jarvis, S. Maddox, M. Negrello, M. Michałowski, E. Pascale, M. Pohlen, E. Rigby, G. Rodighiero, S. Samui, S. Serjeant, P. Temi, M. Thompson, P. van der Werf, A. Verma and C. Vlahakis A&A 518 L39 (2010) DOI: 10.1051/0004-6361/201014644
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:21026
Deposited By: Benjamin Perez
Deposited On:29 Nov 2010 18:08
Last Modified:03 Oct 2019 02:18

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