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Potential multi-com...
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Ertel, S.Université Grenoble Alpes,Grenoble Alpes University
(author)
Potential multi-component structure of the debris disk around HIP 17439 revealed by Herschel/DUNES
- Article/chapterEnglish2014
Publisher, publication year, extent ...
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2014-01-17
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EDP Sciences,2014
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electronicrdacarrier
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LIBRIS-ID:oai:research.chalmers.se:8faadd4b-2684-4641-ac4d-bc28ecb2f2e8
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https://doi.org/10.1051/0004-6361/201219945DOI
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https://research.chalmers.se/publication/194998URI
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Language:English
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Summary in:English
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Subject category:art swepub-publicationtype
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Subject category:ref swepub-contenttype
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Context. The dust observed in debris disks is produced through collisions of larger bodies left over from the planet/planetesimal formation process. Spatially resolving these disks permits to constrain their architecture and thus that of the underlying planetary/planetesimal system. Aims. Our Herschel open time key program DUNES aims at detecting and characterizing debris disks around nearby, sun-like stars. In addition to the statistical analysis of the data, the detailed study of single objects through spatially resolving the disk and detailed modeling of the data is a main goal of the project. Methods. We obtained the first observations spatially resolving the debris disk around the sun-like star HIP 17439 (HD23484) using the instruments PACS and SPIRE on board the Herschel Space Observatory. Simultaneous multi-wavelength modeling of these data together with ancillary data from the literature is presented. Results. A standard single component disk model fails to reproduce the major axis radial profiles at 70 mu m, 100 mu m, and 160 mu m simultaneously. Moreover, the best-fit parameters derived from such a model suggest a very broad disk extending from few au up to few hundreds of au from the star with a nearly constant surface density which seems physically unlikely. However, the constraints from both the data and our limited theoretical investigation are not strong enough to completely rule out this model. An alternative, more plausible, and better fitting model of the system consists of two rings of dust at approx. 30 au and 90 au, respectively, while the constraints on the parameters of this model are weak due to its complexity and intrinsic degeneracies. Conclusions. The disk is probably composed of at least two components with different spatial locations (but not necessarily detached), while a single, broad disk is possible, but less likely. The two spatially well-separated rings of dust in our best-fit model suggest the presence of at least one high mass planet or several low-mass planets clearing the region between the two rings from planetesimals and dust.
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Marshall, J. P.Universidad Autonoma de Madrid (UAM)
(author)
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Augereau, J. C.Université Grenoble Alpes,Grenoble Alpes University
(author)
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Krivov, A.Friedrich-Schiller-Universität Jena,Friedrich Schiller University Jena
(author)
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Lohne, T.Friedrich-Schiller-Universität Jena,Friedrich Schiller University Jena
(author)
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Eiroa, C.Universidad Autonoma de Madrid (UAM)
(author)
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Mora, A.European Space Astronomy Centre (ESAC)
(author)
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del Burgo, C.Instituto Nacional de Astrofísica, Óptica y Electrońica (INAOE),National Institute of Astrophysics, Optics and Electronics (INAOE)
(author)
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Montesinos, B.
(author)
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Bryden, G.
(author)
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Danchi, W.NASA Goddard Space Flight Center
(author)
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Kirchschlager, F.Christian-Albrechts-Universität zu Kiel,University of Kiel
(author)
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Liseau, René,1949Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)liseau
(author)
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Maldonado, J.Universidad Autonoma de Madrid (UAM)
(author)
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Pilbratt, G.L.European Space Research and Technology Centre (ESA ESTEC)
(author)
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Schuppler, C.Friedrich-Schiller-Universität Jena,Friedrich Schiller University Jena
(author)
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Thebault, P.Observatoire de Paris-Meudon
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White, G. J.STFC Rutherford Appleton Laboratory,Open University
(author)
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Wolf, S.Christian-Albrechts-Universität zu Kiel,University of Kiel
(author)
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Université Grenoble AlpesUniversidad Autonoma de Madrid (UAM)
(creator_code:org_t)
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In:Astronomy and Astrophysics: EDP Sciences561, s. Article no. A114-0004-63611432-0746
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Ertel, S.
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Marshall, J. P.
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Augereau, J. C.
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Krivov, A.
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Lohne, T.
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Eiroa, C.
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Mora, A.
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del Burgo, C.
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Montesinos, B.
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Bryden, G.
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Danchi, W.
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Kirchschlager, F ...
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Liseau, René, 19 ...
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Maldonado, J.
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Pilbratt, G.L.
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Schuppler, C.
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Thebault, P.
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White, G. J.
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Wolf, S.
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