Cold DUst around NEarby Stars (DUNES). First results A resolved exo-Kuiper belt around the solar-like star zeta(2) Ret
Journal article, 2010

We present the first far-IR observations of the solar-type stars delta Pav, HR 8501, 51 Peg and zeta(2) 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 mu m fluxes from delta Pav, HR 8501, and 51 Peg agree with the predicted photospheric fluxes, excluding debris disks brighter than L-dust/L-star similar to 5 x 10(-7) (1 sigma level) around those stars. A flattened, disk-like structure with a semi-major axis of similar to 100 AU in size is detected around zeta(2) Ret. The resolved structure suggests the presence of an eccentric dust ring, which we interpret as an exo-Kuiper belt with L-dust/L-star approximate to 10(-5).

space vehicles: instruments

main-sequence stars

planetary system

stars: general

debris disks

planets

Author

C. Eiroa

Universidad Autonoma de Madrid (UAM)

D. Fedele

Universidad Autonoma de Madrid (UAM)

Max Planck Society

Johns Hopkins University

J. Maldonado

Universidad Autonoma de Madrid (UAM)

B. M. Gonzalez-Garcia

European Space Astronomy Centre (ESAC)

J. Rodmann

European Space Research and Technology Centre (ESA ESTEC)

A. Heras

European Space Research and Technology Centre (ESA ESTEC)

G.L. Pilbratt

European Space Research and Technology Centre (ESA ESTEC)

J. C. Augereau

Grenoble Alpes University

A. Mora

Universidad Autonoma de Madrid (UAM)

European Space Astronomy Centre (ESAC)

B. Montesinos

European Space Astronomy Centre (ESAC)

D. R. Ardila

California Institute of Technology (Caltech)

G. Bryden

Jet Propulsion Laboratory, California Institute of Technology

René Liseau

Chalmers, Earth and Space Sciences, Radio Astronomy and Astrophysics

K. R. Stapelfeldt

Jet Propulsion Laboratory, California Institute of Technology

R. Launhardt

Max Planck Society

E. Solano

European Space Astronomy Centre (ESAC)

A. Bayo

European Space Observatory

O. Absil

University of Liège

M. Arevalo

European Space Astronomy Centre (ESAC)

D. Barrado

European Space Astronomy Centre (ESAC)

C. Beichmann

California Institute of Technology (Caltech)

W. Danchi

NASA Goddard Space Flight Center

C. del Burgo

UNINOVA-CA3

S. Ertel

University of Kiel

M. Fridlund

European Space Research and Technology Centre (ESA ESTEC)

M. Fukagawa

Nagoya University

R. Gutierrez

European Space Astronomy Centre (ESAC)

E. Grun

Max Planck Society

I. Kamp

University of Groningen

A. Krivov

Friedrich Schiller University Jena

J. Lebreton

Grenoble Alpes University

T. Lohne

Friedrich Schiller University Jena

R. Lorente

European Space Astronomy Centre (ESAC)

J. Marshall

Open University

R. Martinez-Arnaiz

Complutense University

G. Meeus

Universidad Autonoma de Madrid (UAM)

D. Montes

Complutense University

A. Morbidelli

Observatoire de la Cote d'Azur

S. Muller

Friedrich Schiller University Jena

H. Mutschke

Friedrich Schiller University Jena

T. Nakagawa

JAXA Institute of Space and Astronautical Science

G. Olofsson

Stockholm University

I. Ribas

Universitat Autonoma de Barcelona (UAB)

A. Roberge

NASA Goddard Space Flight Center

J. Sanz-Forcada

European Space Astronomy Centre (ESAC)

P. Thebault

Observatoire de Paris-Meudon

H. Walker

STFC Rutherford Appleton Laboratory

G. J. White

STFC Rutherford Appleton Laboratory

Open University

S. Wolf

University of Kiel

Astronomy and Astrophysics

0004-6361 (ISSN) 1432-0746 (eISSN)

Vol. 518 Article Number: L131 L131

Subject Categories

Astronomy, Astrophysics and Cosmology

DOI

10.1051/0004-6361/201014594

More information

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