A Herschel resolved far-infrared dust ring around HD 207129
Journal article, 2011
Context. Dusty debris discs around main sequence stars are thought to be the result of continuous collisional grinding of planetesimals in the system. The majority of these systems are unresolved and analysis of the dust properties is limited by the lack of information regarding the dust location. Aims. The Herschel DUNES key program is observing 133 nearby, Sun-like stars (<20 pc, FGK spectral type) in a volume limited survey to constrain the absolute incidence of cold dust around these stars by detection of far infrared excess emission at flux levels comparable to the Edgeworth-Kuiper belt (EKB). Methods. We have observed the Sun-like star HD 207129 with Herschel PACS and SPIRE. In all three PACS bands we resolve a ring-like structure consistent with scattered light observations. Using alpha Bootis as a reference point spread function (PSF), we deconvolved the images, clearly resolving the inner gap in the disc at both 70 and 100 mu m. Results. We have resolved the dust-producing planetesimal belt of a debris disc at 100 mu m for the first time. We measure the radial profile and fractional luminosity of the disc, and compare the values to those of discs around stars of similar age and/or spectral type, placing this disc in context of other resolved discs observed by Herschel/DUNES.
infrared: stars
circumstellar matter
stars: individual: HD 207129
main-sequence stars
nearby stars
q(1) eridani
vega-type stars
belt
debris disks
beta-pictoris
space
planet
search
Author
J. P. Marshall
Universidad Autonoma de Madrid (UAM)
T. Lohne
Friedrich Schiller University Jena
B. Montesinos
Centro de Astrobiologia (CAB)
A. Krivov
Friedrich Schiller University Jena
C. Eiroa
Universidad Autonoma de Madrid (UAM)
O. Absil
University of Liège
G. Bryden
California Institute of Technology (Caltech)
J. Maldonado
Universidad Autonoma de Madrid (UAM)
A. Mora
Universidad Autonoma de Madrid (UAM)
European Space Agency (ESA)
J. Sanz-Forcada
Centro de Astrobiologia (CAB)
D. R. Ardila
California Institute of Technology (Caltech)
J. C. Augereau
Grenoble Alpes University
A. Bayo
European Space Observatory
C. del Burgo
Instituto de Desenvolvimento de Novas Tecnologias (UNINOVA)
W. Danchi
National Aeronautics and Space Administration (NASA)
S. Ertel
University of Kiel
D. Fedele
Max Planck Society
Johns Hopkins University
Universidad Autonoma de Madrid (UAM)
M. Fridlund
European Space Agency (ESA)
J. Lebreton
Grenoble Alpes University
B. M. Gonzalez-Garcia
European Space Agency (ESA)
René Liseau
Chalmers, Earth and Space Sciences, Radio Astronomy and Astrophysics
G. Meeus
Universidad Autonoma de Madrid (UAM)
S. Muller
Friedrich Schiller University Jena
G.L. Pilbratt
European Space Agency (ESA)
A. Roberge
National Aeronautics and Space Administration (NASA)
K. R. Stapelfeldt
California Institute of Technology (Caltech)
P. Thebault
Observatoire de Paris-Meudon
G. J. White
STFC Rutherford Appleton Laboratory
Open University
S. Wolf
University of Kiel
Astronomy and Astrophysics
0004-6361 (ISSN) 1432-0746 (eISSN)
Vol. 529 A117Subject Categories (SSIF 2011)
Astronomy, Astrophysics and Cosmology
DOI
10.1051/0004-6361/201116673