Article (Scientific journals)
Debris disks as seen by Herschel/DUNES
Löhne, T.; Eiroa, C.; Augereau, J.-C. et al.
2012In Astronomische Nachrichten, 333, p. 441
Peer Reviewed verified by ORBi
 

Files


Full Text
Lohne12_debris_disks_seen_by_Herschel_DUNES.pdf
Publisher postprint (2.01 MB)
Request a copy

Published at http://onlinelibrary.wiley.com/doi/10.1002/asna.201211686/full


All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
interplanetary medium; planetary systems; space vehicles; debris disks; stars: individual (HD 207129)
Abstract :
[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.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
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  ;  Université de Liège - ULiège > 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  ;  Université de Liège - ULiège > 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)
More authors (11 more) Less
Language :
English
Title :
Debris disks as seen by Herschel/DUNES
Publication date :
01 June 2012
Journal title :
Astronomische Nachrichten
ISSN :
0004-6337
eISSN :
1521-3994
Publisher :
Wiley, Berlin, Germany
Volume :
333
Pages :
441
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 03 October 2012

Statistics


Number of views
75 (3 by ULiège)
Number of downloads
0 (0 by ULiège)

Scopus citations®
 
7
Scopus citations®
without self-citations
6
OpenCitations
 
5

Bibliography


Similar publications



Contact ORBi