A Herschel resolved far-infrared dust ring around HD 207129
Artikel i vetenskaplig tidskrift, 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.
nearby stars
circumstellar matter
infrared: stars
debris disks
search
planet
q(1) eridani
stars: individual: HD 207129
space
vega-type stars
beta-pictoris
main-sequence stars
belt
Författare
J. P. Marshall
Universidad Autonoma de Madrid
T. Lohne
Friedrich Schiller Universitat Jena
B. Montesinos
CSIC-INTA - Centro de Astrobiologia (CAB)
A. Krivov
Friedrich Schiller Universitat Jena
C. Eiroa
Universidad Autonoma de Madrid
O. Absil
Universite de Liege
G. Bryden
Jet Propulsion Laboratory, California Institute of Technology
J. Maldonado
Universidad Autonoma de Madrid
A. Mora
Universidad Autonoma de Madrid
European Space Astronomy Centre
J. Sanz-Forcada
CSIC-INTA - Centro de Astrobiologia (CAB)
D. R. Ardila
California Institute of Technology
J. C. Augereau
Verimag
A. Bayo
European Space Observatory
C. del Burgo
Instituto de Desenvolvimento de Novas Tecnologias
W. Danchi
NASA Goddard Space Flight Center
S. Ertel
Christian-Albrechts-Universitat zu Kiel
D. Fedele
Max Planck Institut fur Astronomie
Johns Hopkins University
Universidad Autonoma de Madrid
M. Fridlund
ESTEC/SRE-SA
J. Lebreton
Verimag
B. M. Gonzalez-Garcia
European Space Astronomy Centre
René Liseau
Chalmers, Rymd- och geovetenskap, Radioastronomi och astrofysik
G. Meeus
Universidad Autonoma de Madrid
S. Muller
Friedrich Schiller Universitat Jena
G.L. Pilbratt
ESTEC/SRE-SA
A. Roberge
NASA Goddard Space Flight Center
K. R. Stapelfeldt
Jet Propulsion Laboratory, California Institute of Technology
P. Thebault
Observatoire de Paris-Meudon
G. J. White
Open University
Rutherford Appleton Laboratory
S. Wolf
Christian-Albrechts-Universitat zu Kiel
Astronomy and Astrophysics
0004-6361 (ISSN) 1432-0746 (eISSN)
Vol. 529 A117Ämneskategorier (SSIF 2011)
Astronomi, astrofysik och kosmologi
DOI
10.1051/0004-6361/201116673