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.

beta-pictoris

stars: individual: HD 207129

search

nearby stars

main-sequence stars

circumstellar matter

space

planet

q(1) eridani

belt

infrared: stars

vega-type stars

debris disks

Författare

J. P. Marshall

Universidad Autonoma de Madrid (UAM)

T. Lohne

Friedrich-Schiller-Universität Jena

B. Montesinos

Centro de Astrobiologia (CAB)

A. Krivov

Friedrich-Schiller-Universität Jena

C. Eiroa

Universidad Autonoma de Madrid (UAM)

O. Absil

Universite de Liège

G. Bryden

Jet Propulsion Laboratory, California Institute of Technology

J. Maldonado

Universidad Autonoma de Madrid (UAM)

A. Mora

European Space Astronomy Centre (ESA)

Universidad Autonoma de Madrid (UAM)

J. Sanz-Forcada

Centro de Astrobiologia (CAB)

D. R. Ardila

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

Christian-Albrechts-Universität zu Kiel

D. Fedele

Johns Hopkins University

Universidad Autonoma de Madrid (UAM)

Max Planck-institutet

M. Fridlund

ESTEC/SRE-SA

J. Lebreton

Verimag

B. M. Gonzalez-Garcia

European Space Astronomy Centre (ESA)

René Liseau

Chalmers, Rymd- och geovetenskap, Radioastronomi och astrofysik

G. Meeus

Universidad Autonoma de Madrid (UAM)

S. Muller

Friedrich-Schiller-Universität 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

Rutherford Appleton Laboratory

Open University

S. Wolf

Christian-Albrechts-Universität zu Kiel

Astronomy and Astrophysics

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

Vol. 529 A117

Ämneskategorier

Astronomi, astrofysik och kosmologi

DOI

10.1051/0004-6361/201116673

Mer information

Senast uppdaterat

2018-04-13