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  • Eiroa, C.Universidad Autonoma de Madrid (UAM) (author)

DUst around NEarby Stars. The survey observational results

  • Article/chapterEnglish2013

Publisher, publication year, extent ...

  • 2013-06-19
  • EDP Sciences,2013
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:su-93581
  • https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-93581URI
  • https://doi.org/10.1051/0004-6361/201321050DOI
  • https://research.chalmers.se/publication/183022URI

Supplementary language notes

  • Language:English
  • Summary in:English

Part of subdatabase

Classification

  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • AuthorCount:50;Funding Agencies:Spanish grant AYA2008-01727, AYA2011-26202, AYA2008-02038, AYA2011-30147-C03-03 Marie Curie Actions of the European Commision  German DFG Kr 2164/10-1 Lo 171JPL/Caltech  
  • Context. Debris discs are a consequence of the planet formation process and constitute the fingerprints of planetesimal systems. Their solar system counterparts are the asteroid and Edgeworth-Kuiper belts. Aims. The DUNES survey aims at detecting extra-solar analogues to the Edgeworth-Kuiper belt around solar-type stars, putting in this way the solar system into context. The survey allows us to address some questions related to the prevalence and properties of planetesimal systems. Methods. We used Herschel/PACS to observe a sample of nearby FGK stars. Data at 100 and 160 mu m were obtained, complemented in some cases with observations at 70 mu m, and at 250, 350 and 500 mu m using SPIRE. The observing strategy was to integrate as deep as possible at 100 mu m to detect the stellar photosphere. Results. Debris discs have been detected at a fractional luminosity level down to several times that of the Edgeworth-Kuiper belt. The incidence rate of discs around the DUNES stars is increased from a rate of similar to 12.1% +/- 5% before Herschel to similar to 20.2% +/- 2%. A significant fraction (similar to 52%) of the discs are resolved, which represents an enormous step ahead from the previously known resolved discs. Some stars are associated with faint far-IR excesses attributed to a new class of cold discs. Although it cannot be excluded that these excesses are produced by coincidental alignment of background galaxies, statistical arguments suggest that at least some of them are true debris discs. Some discs display peculiar SEDs with spectral indexes in the 70-160 mu m range steeper than the Rayleigh-Jeans one. An analysis of the debris disc parameters suggests that a decrease might exist of the mean black body radius from the F-type to the K-type stars. In addition, a weak trend is suggested for a correlation of disc sizes and an anticorrelation of disc temperatures with the stellar age.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Marshall, J. P.Universidad Autonoma de Madrid (UAM) (author)
  • Mora, A.Centro de Astrobiologia (CAB),European Space Astronomy Centre (ESAC) (author)
  • Montesinos, B.Centro de Astrobiologia (CAB),European Space Astronomy Centre (ESAC) (author)
  • Absil, O.Universite de Liège,University of Liège (author)
  • Augereau, J. Ch.Université Grenoble Alpes,Grenoble Alpes University (author)
  • Bayo, A.Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG) (author)
  • Bryden, G. (author)
  • Danchi, W.NASA Goddard Space Flight Center (author)
  • del Burgo, C.Instituto Nacional de Astrofísica, Óptica y Electrońica (INAOE),National Institute of Astrophysics, Optics and Electronics (INAOE) (author)
  • Ertel, S.Université Grenoble Alpes,Grenoble Alpes University,Centro de Astrobiologia (CAB) (author)
  • Fridlund, M.European Space Research and Technology Centre (ESA ESTEC) (author)
  • Heras, A. M.European Space Research and Technology Centre (ESA ESTEC),Observatoire de la Cote d'Azur,Friedrich-Schiller-Universität Jena,Friedrich Schiller University Jena (author)
  • Krivov, A. V.Friedrich-Schiller-Universität Jena,Friedrich Schiller University Jena (author)
  • Launhardt, R.Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG) (author)
  • Liseau, René,1949Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)liseau (author)
  • Loehne, T.Friedrich-Schiller-Universität Jena,Friedrich Schiller University Jena (author)
  • Maldonado, J.Universidad Autonoma de Madrid (UAM) (author)
  • Pilbratt, G. L.European Space Research and Technology Centre (ESA ESTEC) (author)
  • Roberge, A.NASA Goddard Space Flight Center,California Institute of Technology (Caltech),Universidad Complutense de Madrid,Complutense University (author)
  • Rodmann, J.Georg-August-Universität Göttingen,University of Göttingen (author)
  • Sanz-Forcada, J.Centro de Astrobiologia (CAB) (author)
  • Solano, E. (author)
  • Stapelfeldt, K.NASA Goddard Space Flight Center (author)
  • Thebault, P.Observatoire de Paris-Meudon (author)
  • Wolf, S.Christian-Albrechts-Universität zu Kiel,University of Kiel (author)
  • Ardila, D. (author)
  • Arevalo, M. (author)
  • Beichmann, C.California Institute of Technology (Caltech) (author)
  • Faramaz, V.Université Grenoble Alpes,Grenoble Alpes University (author)
  • Gonzalez-Garcia, B. M.Universidad Autonoma de Madrid (UAM) (author)
  • Gutierrez, R.Centro de Astrobiologia (CAB) (author)
  • Lebreton, J.Université Grenoble Alpes,Grenoble Alpes University (author)
  • Martinez-Arnaiz, R. (author)
  • Meeus, G. (author)
  • Montes, D.Universidad Complutense de Madrid,Complutense University (author)
  • Olofsson, GöstaStockholms universitet,Institutionen för astronomi,Stockholm University (author)
  • Su, K. Y. L.University of Arizona (author)
  • White, G. J.Open University,STFC Rutherford Appleton Laboratory (author)
  • Barrado, D.Centro de Astrobiologia (CAB),Calar Alto Astronomical Observatory (author)
  • Fukagawa, M.Nagoya University (author)
  • Gruen, E.Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG) (author)
  • Kamp, I.Rijksuniversiteit Groningen,University of Groningen (author)
  • Lorente, R.European Space Astronomy Centre (ESAC) (author)
  • Morbidelli, A. (author)
  • Mueller, S.Friedrich-Schiller-Universität Jena,Friedrich Schiller University Jena (author)
  • Mutschke, H. (author)
  • Nakagawa, T. (author)
  • Ribas, I.Universitat Autonoma de Barcelona (UAB) (author)
  • Walker, H.Open University (author)
  • Universidad Autonoma de Madrid (UAM)Centro de Astrobiologia (CAB) (creator_code:org_t)

Related titles

  • In:Astronomy and Astrophysics: EDP Sciences555, s. A11-0004-63611432-0746

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