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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents

ID: 709962.0, MPI für Astronomie / Publikationen_mpia
Constraining the structure of the transition disk HD 135344B (SAO 206462) by simultaneous modeling of multiwavelength gas and dust observations
Authors:Carmona, A.; Pinte, C.; Thi, W. F.; Benisty, M.; Ménard, F.; Grady, C.; Kamp, I.; Woitke, P.; Olofsson, J.; Roberge, A.; Brittain, S.; Duchêne, G.; Meeus, G.; Martin-Zaïdi, C.; Dent, B.; Le Bouquin, J. B.; Berger, J. P.
Date of Publication (YYYY-MM-DD):2014
Title of Journal:Astronomy and Astrophysics
Start Page:id. A51(23 pp)
Audience:Not Specified
Abstract / Description:Context. Constraining the gas and dust disk structure of transition disks, particularly in the inner dust cavity, is a crucial step toward understanding the link between them and planet formation. HD 135344B is an accreting (pre-)transition disk that displays the CO 4.7 mum emission extending tens of AU inside its 30 AU dust cavity. <BR /> Aims: We constrain HD 135344B's disk structure from multi-instrument gas and dust observations. <BR /> Methods: We used the dust radiative transfer code MCFOST and the thermochemical code ProDiMo to derive the disk structure from the simultaneous modeling of the spectral energy distribution (SED), VLT/CRIRES CO P(10) 4.75 mum, Herschel/PACS [O i] 63 mum, Spitzer/IRS, and JCMT 12CO J = 3-2 spectra, VLTI/PIONIER H-band visibilities, and constraints from (sub-)mm continuum interferometry and near-IR imaging. <BR /> Results: We found a disk model able to describe the current gas and dust observations simultaneously. This disk has the following structure. (1) To simultaneously reproduce the SED, the near-IR interferometry data, and the CO ro-vibrational emission, refractory grains (we suggest carbon) are present inside the silicate sublimation radius (0.08 <R< 0.2 AU). (2) The dust cavity (R< 30 AU) is filled with gas, the surface density of the gas inside the cavity must increase with radius to fit the CO ro-vibrational line profile, a small gap of a few AU in the gas distribution is compatible with current data, and a large gap of tens of
Free Keywords:protoplanetary disks; stars: pre-main sequence; planets and satellites: formation; techniques: high angular resolution; techniques: interferometric; stars: individual: HD 135344B (SAO 206462)
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:ISSN:0004-6361 %R 10.1051/0004-6361/201322534
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