Reference : Cold DUst around NEarby Stars (DUNES). First results. A resolved exo-Kuiper belt around ...

	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
	To cite this reference:	http://hdl.handle.net/2268/75221

Title :	Cold DUst around NEarby Stars (DUNES). First results. A resolved exo-Kuiper belt around the solar-like star ζ2 Ret
Language :	English
Author, co-author :	Eiroa, C. [Dpt. Física Teórica, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain]
	Fedele, D. [Dpt. Física Teórica, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain; Max-Planck Institut für Astronomie, Königstuhl 17, 69117 Heidelberg, Germany; John Hopkins University, Dept. of Physics and Astronomy, 3701 San Martin drive, Baltimore, MD 21210, USA]
	Maldonado, J. [Dpt. Física Teórica, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain]
	Gonzalez-Garcia, B. [ > > ]
	Rodmann, J. [ESA Space Environment and Effects Section, ESTEC, PO Box 299, 2200 AG Noordwijk, The Netherlands]
	Heras, A. M. [ESA Astrophysics & Fundamental Physics Missions Division, ESTEC/SRE-SA, Keplerlaan 1, 2201 AZ Noordwijk, The Netherlands]
	Pilbratt, G. L. [ESA Astrophysics & Fundamental Physics Missions Division, ESTEC/SRE-SA, Keplerlaan 1, 2201 AZ Noordwijk, The Netherlands]
	Augereau, J.-C. [Université Joseph Fourier/CNRS, Laboratoire d'Astrophysique de Grenoble, UMR 5571, Grenoble, France]
	Mora, A. [ESA-ESAC Gaia SOC. PO Box 78, 28691 Villanueva de la Cañada, Madrid, Spain ; Dpt. Física Teórica, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain]
	Montesinos, B. [LAEX, Centro de Astrobiología (INTA-CSIC), LAEFF Campus, European Space Astronomy Center (ESAC), PO Box 78, 28691 Villanueva de la Cañada, Madrid, Spain]
	Ardila, D. [NASA Herschel Science Center, California Institute of Technology, 1200 E. California Blvd., Pasadena, CA 91125, USA]
	Bryden, G. [Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA]
	Liseau, R. [Onsala Space Observatory, Chalmers University of Technology, Se-439 92 Onsala, Sweden]
	Stapelfeldt, K. [Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA]
	Launhardt, R. [Max-Planck Institut für Astronomie, Königstuhl 17, 69117 Heidelberg, Germany]
	Solano, E. [LAEX, Centro de Astrobiología (INTA-CSIC), LAEFF Campus, European Space Astronomy Center (ESAC), PO Box 78, 28691 Villanueva de la Cañada, Madrid, Spain]
	Bayo, A. [European Space Observatory, Alonso de Cordova 3107, Vitacura Casilla 19001, Santiago 19, Chile]
	Absil, Olivier [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS) >]
	Arevalo, M. [ > > ]
	Barrado, D. [LAEX, Centro de Astrobiología (INTA-CSIC), LAEFF Campus, European Space Astronomy Center (ESAC), PO Box 78, 28691 Villanueva de la Cañada, Madrid, Spain]
	Beichmann, C. [NASA ExoPlanet Science Institute California Inst. of Technology, 1200 E. California Blvd., Pasadena, CA 91125, USA]
	Danchi, W. [NASA Goddard Space Flight Center, Exoplanets and Stellar Astrophysics, Code 667, Greenbelt, MD 20771, USA]
	Del Burgo, C. [UNINOVA-CA3, Campus da Caparica, Quinta da Torre, Monte de Caparica,2825-149 Caparica, Portugal]
	Ertel, S. [Christian-Albrechts-Universität zu Kiel, Institut für Theoretische Physik und Astrophysik, Leibnizstr. 15, 24098 Kiel, Germany]
	Fridlund, M. [ESA Astrophysics & Fundamental Physics Missions Division, ESTEC/SRE-SA, Keplerlaan 1, 2201 AZ Noordwijk, The Netherlands]
	Fukagawa, M. [Nagoya University, Japan]
	Gutierrez, R. [ > > ]
	Grün, E. [ > > ]
	Kamp, I. [Kapteyn Astronomical Institute, Postbus 800, 9700 AV Groningen, The Netherlands]
	Krivov, A. [Astrophysikalisches Institut und Universitätssternwarte, Friedrich-Schiller-Universität,Schillergäà chen 2-3, 07745 Jena, Germany]
	Lebreton, J. [Université Joseph Fourier/CNRS, Laboratoire d'Astrophysique de Grenoble, UMR 5571, Grenoble, France]
	Löhne, T. [ > > ]
	Lorente, R. [Herschel Science Center, ESAC/ESA, PO BOX 78, 28691 Villanueva de la Cañada, Madrid, Spain]
	Marshall, J. [Department of Physics and Astrophysics, Open University, Walton Hall, Milton Keynes MK7 6AA, UK]
	Marti­nez-Arnaiz, R. [ > > ]
	Meeus, G. [Dpt. Física Teórica, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain]
	Montes, D. [Universidad Complutense de Madrid, Facultad de Ciencias Físicas, Dpt. Astrofísica, av. Complutense s/n. 28040 Madrid, Spain]
	Morbidelli, A. [Observatoire de la Côte d'Azur, Boulevard de l'Observatoire, BP 4229, 06304 Nice Cedex 4, France]
	Müller, S. [ > > ]
	Mutschke, H. [Astrophysikalisches Institut und Universitätssternwarte, Friedrich-Schiller-Universität,Schillergäà chen 2-3, 07745 Jena, Germany]
	Nakagawa, T. [Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), 3-1-1, Yoshinodai, Sagamihara, Kanagawa, 229-8510, Japan]
	Olofsson, G. [Department of Astronomy, Stockholm University, AlbaNova University Center, Roslagstullsbacken 21, 106 91 Stockholm, Sweden]
	Ribas, I. [Institut de Ciències de l'Espai (CSIC-IEEC), Campus UAB, Facultat de Ciències, Torre C5, parell, 2a pl., 08193 Bellaterra, Barcelona, Spain]
	Roberge, A. [NASA Goddard Space Flight Center, Exoplanets and Stellar Astrophysics, Code 667, Greenbelt, MD 20771, USA]
	Sanz-Forcada, J. [LAEX, Centro de Astrobiología (INTA-CSIC), LAEFF Campus, European Space Astronomy Center (ESAC), PO Box 78, 28691 Villanueva de la Cañada, Madrid, Spain]
	Thébault, P. [ > > ]
	Walker, H. [Rutherford Appleton Laboratory, Chilton OX11 0QX, UK]
	White, G. J. [Department of Physics and Astrophysics, Open University, Walton Hall, Milton Keynes MK7 6AA, UK ; Rutherford Appleton Laboratory, Chilton OX11 0QX, UK]
	Wolf, S. [Christian-Albrechts-Universität zu Kiel, Institut für Theoretische Physik und Astrophysik, Leibnizstr. 15, 24098 Kiel, Germany]
Publication date :	16-Jul-2010
Journal title :	Astronomy and Astrophysics
Publisher :	EDP Sciences
Volume :	518
Pages :	L131
Audience :	International
ISSN :	0004-6361
e-ISSN :	1432-0746
City :	Les Ulis
Country :	France
Keywords :	[en] stars: general ; planetary system ; space vehicles: instruments
Abstract :	[en] We present the first far-IR observations of the solar-type stars δ Pav, HR 8501, 51 Peg and ζ2 Ret, taken within the context of the DUNES Herschel open time key programme (OTKP). This project uses the PACS and SPIRE instruments with the objective of studying infrared excesses due to exo-Kuiper belts around nearby solar-type stars. The observed 100 μm fluxes from δ Pav, HR 8501, and 51 Peg agree with the predicted photospheric fluxes, excluding debris disks brighter than Ldust/ ~ 5 × 10-7 (1σ level) around those stars. A flattened, disk-like structure with a semi-major axis of ~100 AU in size is detected around ζ2 Ret. The resolved structure suggests the presence of an eccentric dust ring, which we interpret as an exo-Kuiper belt with Ldust/ ≈ 10-5.
Permalink :	http://hdl.handle.net/2268/75221
DOI :	10.1051/0004-6361/201014594
Other URL :	http://adsabs.harvard.edu/abs/2010A%26A...518L.131E
Mentions required by the publisher for OA :	http://www.aanda.org/index.php?option=com_article&access=doi&doi=10.1051/0004-6361/201014594&Itemid=129 - Copyright ESO 2010, published by EDP Sciences
Commentary :	http://de.arxiv.org/abs/1005.3151

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