Marshall, J. P. and Ardila, D. (2011) A Herschel resolved far-infrared dust ring around HD 207129. Astronomy and Astrophysics, 529 . A117. ISSN 0004-6361 http://resolver.caltech.edu/CaltechAUTHORS:20110429-103351727
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Context. Dusty debris discs around main sequence stars are thought to be the result of continuous collisional grinding of planetesimals in the system. The majority of these systems are unresolved and analysis of the dust properties is limited by the lack of information regarding the dust location. Aims. The Herschel DUNES key program is observing 133 nearby, Sun-like stars (<20 pc, FGK spectral type) in a volume limited survey to constrain the absolute incidence of cold dust around these stars by detection of far infrared excess emission at flux levels comparable to the Edgeworth-Kuiper belt (EKB). Methods. We have observed the Sun-like star HD 207129 with Herschel PACS and SPIRE. In all three PACS bands we resolve a ring-like structure consistent with scattered light observations. Using α Boötis as a reference point spread function (PSF), we deconvolved the images, clearly resolving the inner gap in the disc at both 70 and 100 μm. Results. We have resolved the dust-producing planetesimal belt of a debris disc at 100 μm for the first time. We measure the radial profile and fractional luminosity of the disc, and compare the values to those of discs around stars of similar age and/or spectral type, placing this disc in context of other resolved discs observed by Herschel/DUNES.
|Additional Information:||© 2011 ESO. Article published by EDP Sciences. Received 8 February 2011; Accepted 17 March 2011. Published online 14 April 2011. Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA. We would like to thank the staff at the Herschel Science Centre, discussions with whom added immeasurably to the quality of the data reduction. C. Eiroa, J. Maldonado, J.P. Marshall, and B. Montesinos are partly supported by Spanish grant AYA 2008/01727. T. Löhne, S.Müller and A. Krivov acknowledge support by the DFG, projects Lo 1715/1-1 and Kr 2164/9-1. J.-Ch. Augereau, J. Lebreton and P. Thébault are supported by a CNES-PNP grant.|
|Subject Keywords:||stars: individual: HD 207129; circumstellar matter; infrared: stars|
|Official Citation:||A Herschel resolved far-infrared dust ring around HD 207129 J. P. Marshall, T. Löhne, B. Montesinos, A. V. Krivov, C. Eiroa, O. Absil, G. Bryden, J. Maldonado, A. Mora, J. Sanz-Forcada, D. Ardila, J.-Ch. Augereau, A. Bayo, C. del Burgo, W. Danchi, S. Ertel, D. Fedele, M. Fridlund, J. Lebreton, B. M. González-García, R. Liseau, G. Meeus, S. Müller, G. L. Pilbratt, A. Roberge, K. Stapelfeldt, P. Thébault, G. J. White and S. Wolf A&A 529 A117 (2011) DOI: 10.1051/0004-6361/201116673|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Jason Perez|
|Deposited On:||02 May 2011 20:01|
|Last Modified:||26 Dec 2012 13:12|
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