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arXiv · 0810.5534

10 $μ$m interferometry of disks around young stars

Roy van Boekel
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Abstract

This contribution reviews results from interferometric observations of circumstellar disks around young stars of $\lesssim$3 M$_{\odot}$, performed with the MIDI instrument operating in the 10 $μ$m spectral region. Two main topics, the disk structure on $\sim$1-10 AU scales and the dust properties in the same region, are illustrated with several examples of MIDI studies, covering various evolutionary stages. The spatially resolved observations largely confirm SED-only based hypotheses on disk structure, yet also reveal degeneracies that may occur in such SED modeling. The properties of the dust on the disk surface show a strong radial dependence: the dust close to the central star has generally larger grain sizes and in particular a much higher crystallinity than the dust in more remote disk regions.

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Roy van Boekel. 2008-10-30. 10 $μ$m interferometry of disks around young stars. https://doi.org/10.1088/1742-6596/131/1/012023

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