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 L131Subject Categories
Astronomy, Astrophysics and Cosmology
DOI
10.1051/0004-6361/201014594