Reference : Debris disks as seen by Herschel/DUNES
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/131574
Debris disks as seen by Herschel/DUNES
English
Löhne, T. [Astrophysikalisches Institut und Universitätssternwarte, Friedrich-Schiller-Universität Jena, Schillergäßchen 2-3, 07745 Jena, Germany]
Eiroa, C. [Departmento Física Teórica, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain]
Augereau, J.-C. [UJF-Grenoble 1 / CNRS-INSU, Institut de Planétologie et d'Astrophysique de Grenoble (IPAG) UMR 5274, 38041 Grenoble, France]
Ertel, S. [Christian-Albrechts-Universität zu Kiel, Institut für Theoretische Physik und Astrophysik, Leibnizstr. 15, 24098 Kiel, Germany]
Marshall, J. P. [Departmento Física Teórica, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain]
Mora, A. [ESA-ESAC Gaia SOC. PO Box 78 28691 Villanueva de la Cañada, Madrid, Spain]
Absil, Olivier mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS) >]
Stapelfeldt, K. [Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA]
Thébault, P. [LESIA, Observatoire de Paris, 92195 Meudon Principal Cedex, France]
Bayo, A. [European Southern Observatory, Alonso de Córdova 3107, Vitacura, Santiago, Chile]
del Burgo, C. [UNINOVA-CA3, Campus da Caparica, Quinta da Torre, Monte de Caparica, 2825-149 Caparica, Portugal]
Danchi, W. [NASA Goddard Space Flight Center, Exoplanets and Stellar Astrophysics, Code 667, Greenbelt, MD 20771, USA /DUNES]
Krivov, A. V. [Astrophysikalisches Institut und Universitätssternwarte, Friedrich-Schiller-Universität Jena, Schillergäßchen 2-3, 07745 Jena, Germany]
Lebreton, J. [UJF-Grenoble 1 / CNRS-INSU, Institut de Planétologie et d'Astrophysique de Grenoble (IPAG) UMR 5274, 38041 Grenoble, France]
Letawe, G. [Institut d'Astrophysique et de Géophysique, Université de Liège, allée du 6 août 17, 4000 Liège, Belgium]
Magain, Pierre mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image >]
Maldonado, J. [Departmento Física Teórica, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain]
Montesinos, B. [Departmento de Astrofísica, Centro de Astrobiología (CAB, CSIC-INTA), ESAC Campus, PO Box 78, 28691 Villanueva de la Cañada, Madrid, Spain]
Pilbratt, G. L. [ESA Astrophysics & Fundamental Physics Missions Division, ESTEC/SRE-SA, Keplerlaan 1, 2201 AZ Noordwijk, The Netherlands]
White, G. J. [Department of Physics and Astrophysics, Open University, Walton Hall, Milton Keynes MK7 6AA, UK]
Wolf, S. [Christian-Albrechts-Universität zu Kiel, Institut für Theoretische Physik und Astrophysik, Leibnizstr. 15, 24098 Kiel, Germany)]
1-Jun-2012
Astronomische Nachrichten
Wiley
333
441
Yes (verified by ORBi)
International
0004-6337
1521-3994
Berlin
Germany
[en] interplanetary medium ; planetary systems ; space vehicles ; debris disks ; stars: individual (HD 207129)
[en] The far-infrared excesses produced by debris disks are common features of stellar systems. These disks are thought to contain solids ranging from micron-sized dust to planetesimals. Naturally, their formation and evolution are linked to those of potential planets. With this motivation, the Herschel open time key programme DUNES (DUst around NEarby Stars) aims at further characterising known debris disks and discovering new ones in the regime explored by the Herschel space observatory. On the one hand, in their survey of 133 nearby FGK stars, DUNES discovered a class of extremely cold and faint debris disks, different from well-known disks such as the one around Vega in that their inferred typical grain sizes are rather large, indicating low dynamical excitation and low collision rates. On the other hand, for the more massive disk around the sun-like star HD 207129, well-resolved PACS images confirmed the ring-liked structure seen in HST images and provided valuable information for an in-depth study and benchmark for models. Employing both models for power-law fitting and collisional evolution we found the disk around HD 207129 to feature low collision rates and large grains, as well. Transport by means of Poynting-Robertson drag likely plays a role in replenishing the dust seen closer to the star, inside of the ring. The inner edge is therefore rather smooth and the contribution from the extended halo of barely bound grains is small. Both slowly self-stirring and planetary perturbations could potentially have formed and shaped this disk. Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA.
Researchers
http://hdl.handle.net/2268/131574
10.1002/asna.201211686
http://adsabs.harvard.edu/abs/2012AN....333..441L
Published at http://onlinelibrary.wiley.com/doi/10.1002/asna.201211686/full

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