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.

belt

vega-type stars

planet

search

debris disks

circumstellar matter

nearby stars

q(1) eridani

stars: individual: HD 207129

space

main-sequence stars

infrared: stars

beta-pictoris

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

Jet Propulsion Laboratory, California Institute of Technology

J. Maldonado

Universidad Autonoma de Madrid (UAM)

A. Mora

Universidad Autonoma de Madrid (UAM)

European Space Astronomy Centre (ESAC)

J. Sanz-Forcada

Centro de Astrobiologia (CAB)

D. R. Ardila

California Institute of Technology (Caltech)

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

University of Kiel

D. Fedele

Universidad Autonoma de Madrid (UAM)

Max Planck Society

Johns Hopkins University

M. Fridlund

European Space Research and Technology Centre (ESA ESTEC)

J. Lebreton

Verimag

B. M. Gonzalez-Garcia

European Space Astronomy Centre (ESAC)

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 Research and Technology Centre (ESA ESTEC)

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

University of Kiel

Astronomy and Astrophysics

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

Vol. 529 A117

Subject Categories

Astronomy, Astrophysics and Cosmology

DOI

10.1051/0004-6361/201116673

More information

Latest update

8/23/2019