stars: individual: HD 207129; circumstellar matter; infrared: stars
Abstract :
[en] 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. <BR /> 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). <BR /> 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 α Boötis as a reference point spread function (PSF), we deconvolved the images, clearly resolving the inner gap in the disc at both 70 and 100 μm. <BR /> Results: We have resolved the dust-producing planetesimal belt of a debris disc at 100 μm 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. Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Marshall, J. P.; Departmento Física Teórica Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049, Madrid, Spain
Montesinos, B.; Departmento de Astrofísica, Centro de Astrobiología (CAB, CSIC-INTA), ESAC Campus, PO Box 78, 28691 Villanueva de la Cañada, Madrid, Spain
Krivov, A. V.; Friedrich-Schiller-Universität Jena, Astrophysikalisches Institut und Universitätssternwarte, 07743, Jena, Germany
Eiroa, C.; Departmento Física Teórica Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049, Madrid, Spain
Absil, Olivier ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Bryden, G.; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, 91109, USA
Maldonado, J.; Departmento Física Teórica Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049, Madrid, Spain
Mora, A.; ESA-ESAC Gaia SOC., PO Box 78, 28691 Villanueva de la Cañada, Madrid, Spain ; Departmento Física Teórica Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049, Madrid, Spain
Sanz-Forcada, J.; Departmento de Astrofísica, Centro de Astrobiología (CAB, CSIC-INTA), ESAC Campus, PO Box 78, 28691 Villanueva de la Cañada, Madrid, Spain
Ardila, D.; NASA Herschel Science Center, California Institute of Technology, 1200 E. California Blvd., Pasadena, CA, 91125, USA
Augereau, J.-C.; UJF-Grenoble 1/CNRS-INSU, Institut de Planétologie et d'Astrophysique de Grenoble (IPAG) UMR 5274, 38041, Grenoble, France
Bayo, A.; European Space Observatory, Alonso de Cordova 3107, Vitacura, Casilla 19001, Santiago 19, Chile
Del Burgo, C.; UNINOVA-CA3, Campus da Caparica, Quinta da Torre, Monte de Caparica 2825-149, Caparica, Portugal
Danchi, W.; NASA Goddard Space Flight Center, Exoplanets and Stellar Astrophysics, Code 667, Greenbelt, MD, 20771, USA
Ertel, S.; Christian-Albrechts-Universität zu Kiel, Institut für Theoretische Physik und Astrophysik, Leibnizstr. 15, 24098, Kiel, Germany
Fedele, D.; Departmento Física Teórica Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049, Madrid, Spain ; Max-Planck-Institut für Astronomie, Königstuhl 17, 69117, Heidelberg, Germany ; John Hopkins University, Dept. of Physics and Astronomy, 3701 San Martin drive, Baltimore, MD, 21210, USA
Fridlund, M.; ESA Astrophysics & Fundamental Physics Missions Division, ESTEC/SRE-SA, Keplerlaan 1, 2201 AZ, Noordwijk, The Netherlands
Lebreton, J.; UJF-Grenoble 1/CNRS-INSU, Institut de Planétologie et d'Astrophysique de Grenoble (IPAG) UMR 5274, 38041, Grenoble, France
González-García, B. M.; INSA at ESAC, 28691 Villanueva de la Cañada, Madrid, Spain
Liseau, R.; Onsala Space Observatory, Chalmers University of Technology, 439 92, Onsala, Sweden
Meeus, G.; Departmento Física Teórica Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049, Madrid, Spain
Pilbratt, G. L.; ESA Astrophysics & Fundamental Physics Missions Division, ESTEC/SRE-SA, Keplerlaan 1, 2201 AZ, Noordwijk, The Netherlands
Roberge, A.; NASA Goddard Space Flight Center, Exoplanets and Stellar Astrophysics, Code 667, Greenbelt, MD, 20771, USA
Stapelfeldt, K.; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, 91109, USA
Thébault, P.; LESIA, Observatoire de Paris, 92195, Meudon Principal Cedex, France
White, G. J.; Department of Physics and Astrophysics, Open University, Walton Hall, Milton Keynes, MK7 6AA, UK ; Rutherford Appleton Laboratory, Chilton, OX11 0QX, UK
Wolf, S.; Christian-Albrechts-Universität zu Kiel, Institut für Theoretische Physik und Astrophysik, Leibnizstr. 15, 24098, Kiel, Germany