Cold DUst around NEarby Stars (DUNES). First results A resolved exo-Kuiper belt around the solar-like star zeta(2) Ret
Artikel i vetenskaplig tidskrift, 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).
main-sequence stars
debris disks
space vehicles: instruments
stars: general
planetary system
planets
Författare
C. Eiroa
Universidad Autonoma de Madrid (UAM)
D. Fedele
Max-Planck-Gesellschaft
Johns Hopkins University
Universidad Autonoma de Madrid (UAM)
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
Université Grenoble Alpes
A. Mora
European Space Astronomy Centre (ESAC)
Universidad Autonoma de Madrid (UAM)
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, Rymd- och geovetenskap, Radioastronomi och astrofysik
K. R. Stapelfeldt
Jet Propulsion Laboratory, California Institute of Technology
R. Launhardt
Max-Planck-Gesellschaft
E. Solano
European Space Astronomy Centre (ESAC)
A. Bayo
European Space Observatory
O. Absil
Universite de Liège
M. Arevalo
European Space Astronomy Centre (ESAC)
D. Barrado
European Space Astronomy Centre (ESAC)
C. Beichmann
California Institute of Technology (Caltech)
W. Danchi
National Aeronautics and Space Administration (NASA)
C. del Burgo
UNINOVA-CA3
S. Ertel
Christian-Albrechts-Universität zu 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-Gesellschaft
I. Kamp
Rijksuniversiteit Groningen
A. Krivov
Friedrich-Schiller-Universität Jena
J. Lebreton
Université Grenoble Alpes
T. Lohne
Friedrich-Schiller-Universität Jena
R. Lorente
European Space Astronomy Centre (ESAC)
J. Marshall
Open University
R. Martinez-Arnaiz
Universidad Complutense de Madrid
G. Meeus
Universidad Autonoma de Madrid (UAM)
D. Montes
Universidad Complutense de Madrid
A. Morbidelli
Observatoire de la Cote d'Azur
S. Muller
Friedrich-Schiller-Universität Jena
H. Mutschke
Friedrich-Schiller-Universität Jena
T. Nakagawa
JAXA Institute of Space and Astronautical Science
G. Olofsson
Stockholms universitet
I. Ribas
Universitat Autonoma de Barcelona (UAB)
A. Roberge
National Aeronautics and Space Administration (NASA)
J. Sanz-Forcada
European Space Astronomy Centre (ESAC)
P. Thebault
Observatoire de Paris-Meudon
H. Walker
STFC Rutherford Appleton Laboratory
G. J. White
Open University
STFC Rutherford Appleton Laboratory
S. Wolf
Christian-Albrechts-Universität zu Kiel
Astronomy and Astrophysics
0004-6361 (ISSN) 1432-0746 (eISSN)
Vol. 518 Article Number: L131 L131Ämneskategorier (SSIF 2011)
Astronomi, astrofysik och kosmologi
DOI
10.1051/0004-6361/201014594