Probing Dust Grain Evolution In IM Lupi's Circumstellar Disc - Multi-Wavelength Observations And Modelling Of The Dust Disc

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dc.contributor.utaustinauthorKessler-Silacci, J.en_US
dc.creatorPinte, C.en_US
dc.creatorPadgett, D. L.en_US
dc.creatorMenard, F.en_US
dc.creatorStapelfeldt, K. R.en_US
dc.creatorSchneider, G.en_US
dc.creatorOlofsson, J.en_US
dc.creatorPanic, O.en_US
dc.creatorAugereau, J. C.en_US
dc.creatorDuchene, G.en_US
dc.creatorKrist, J.en_US
dc.creatorPontoppidan, K.en_US
dc.creatorPerrin, M. D.en_US
dc.creatorGrady, C. A.en_US
dc.creatorKessler-Silacci, J.en_US
dc.creatorvan Dishoeck, E. F.en_US
dc.creatorLommen, D.en_US
dc.creatorSilverstone, M.en_US
dc.creatorHines, D. C.en_US
dc.creatorWolf, S.en_US
dc.creatorBlake, G. A.en_US
dc.creatorHenning, T.en_US
dc.creatorStecklum, B.en_US
dc.date.accessioned2016-04-22T19:45:25Z
dc.date.available2016-04-22T19:45:25Z
dc.date.issued2008-10en
dc.description.abstractAims. We present a panchromatic study, involving a multiple technique approach, of the circumstellar disc surrounding the T Tauri star IM Lupi (Sz 82). Methods. We have undertaken a comprehensive observational study of IM Lupi using photometry, spectroscopy, millimetre interferometry and multi-wavelength imaging. For the first time, the disc is resolved from optical and near-infrared wavelengths in scattered light, to the millimetre regime in thermal emission. Our data-set, in conjunction with existing photometric data, provides an extensive coverage of the spectral energy distribution, including a detailed spectrum of the silicate emission bands. We have performed a simultaneous modelling of the various observations, using the radiative transfer code MCFOST, and analysed a grid of models over a large fraction of the parameter space via Bayesian inference. Results. We have constructed a model that can reproduce all of the observations of the disc. Our analysis illustrates the importance of combining a wide range of observations in order to fully constrain the disc model, with each observation providing a strong constraint only on some aspects of the disc structure and dust content. Quantitative evidence of dust evolution in the disc is obtained: grain growth up to millimetre-sized particles, vertical stratification of dust grains with micrometric grains close to the disc surface and larger grains which have settled towards the disc midplane, and possibly the formation of fluffy aggregates and/ or ice mantles around grains.en_US
dc.description.departmentAstronomyen_US
dc.description.sponsorshipEuropean Commission's Seventh Framework Program as a Marie Curie Intra-European Fellow PIEF-GA-2008-220891en_US
dc.description.sponsorshipAgence Nationale pour la Recherche (ANR) of France ANR-07-BLAN-0221en_US
dc.description.sponsorshipAssociation of Universities for Research in Astronomy, Inc.en_US
dc.description.sponsorshipNASA contract NAS 5-26555en_US
dc.description.sponsorshipSTScIen_US
dc.description.sponsorshipNASA 1224608, 1230779, 1256316en_US
dc.description.sponsorshipNSFen_US
dc.description.sponsorshipSpitzer Postdoctoral Fellowship Programen_US
dc.description.sponsorshipNWO Spinoza granten_US
dc.description.sponsorshipNOVAen_US
dc.description.sponsorshipEuropean Research Training Networken_US
dc.description.sponsorshipPLANETS HPRN-CT-2002-00308, G0/7387, GO/10177en_US
dc.identifierdoi:10.15781/T2D21V
dc.identifier.citationPinte, C., D. L. Padgett, F. Ménard, K. R. Stapelfeldt, G. Schneider, J. Olofsson, O. Panić et al. >Probing dust grain evolution in IM Lupi's circumstellar disc-Multi-wavelength observations and modelling of the dust disc.> Astronomy & Astrophysics Vol. 489, No. 2 (Oct., 2008): pp. 633-650.en_US
dc.identifier.doi10.1051/0004-6361:200810121en_US
dc.identifier.issn0004-6361en_US
dc.identifier.urihttp://hdl.handle.net/2152/34390
dc.language.isoEnglishen_US
dc.relation.ispartofserialAstronomy & Astrophysicsen_US
dc.rightsAdministrative deposit of works to Texas ScholarWorks: This works author(s) is or was a University faculty member, student or staff member; this article is already available through open access or the publisher allows a PDF version of the article to be freely posted online. The library makes the deposit as a matter of fair use (for scholarly, educational, and research purposes), and to preserve the work and further secure public access to the works of the University.en_US
dc.subjectcircumstellar matteren_US
dc.subjectaccretion, accretion disksen_US
dc.subjectplanetary systems :en_US
dc.subjectprotoplanetary disksen_US
dc.subjectradiative transferen_US
dc.subjectstars : formationen_US
dc.subjectpulsars :en_US
dc.subjectindividual : im lupien_US
dc.subjectt-tauri starsen_US
dc.subjectmain-sequence starsen_US
dc.subjectinfrared spectrograph spectraen_US
dc.subjectmicroscopii debris disken_US
dc.subjectyoung stellar objectsen_US
dc.subjectspitzer c2d surveyen_US
dc.subjectlow-mass starsen_US
dc.subjectprotoplanetary disksen_US
dc.subjectcrystalline silicatesen_US
dc.subjectinterstellar grainsen_US
dc.subjectastronomy & astrophysicsen_US
dc.titleProbing Dust Grain Evolution In IM Lupi's Circumstellar Disc - Multi-Wavelength Observations And Modelling Of The Dust Discen_US
dc.typeArticleen_US

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