Multiwavelength interferometric observations and modeling of circumstellar disks
作者： A. A. Schegerer , T. Ratzka , P. A. Schuller , S. Wolf , L. Mosoni
DOI: 10.1051/0004-6361/201220190
关键词: Stars 、 Circumstellar dust 、 Astrophysics 、 Accretion (astrophysics) 、 T Tauri star 、 Thick disk 、 Spectral energy distribution 、 Physics 、 Young stellar object 、 Astronomy 、 Debris disk
摘要: We investigate the structure of innermost region three circumstellar disks around pre-main sequence stars HD 142666, AS 205 N, and S. determine inner radii dust and, in particular, search for transition objects where has been depleted disk gaps have formed at a few tenths AU up to several AU. performed interferometric observations with IOTA, AMBER, MIDI infrared wavelength ranges 1.6-2.5um 8-13um projected baseline lengths between 25m 102m. The data analysis was based on radiative transfer simulations 3D models young stellar (YSOs) reproduce spectral energy distribution visibilities simultaneously. Accretion effects could be considered modeling approach. Results from previous studies restricted parameter space. this study were spatially resolved range using interferometers. Based these observations, gap found source 142666 that classifies it as object. There is hole radius R_in=0.30AU (dust-free) ring 0.35AU 0.80AU 142666. classification system classical T Tauri confirmed canonical model approach, i. e., there are no hints our observations.
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