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| EPoS Contribution |
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Probing the inner regions of disks around high-mass stars with
interferometry in the mid-infrared
Paul A. Boley Max-Planck-Institut für Astronomie, Heidelberg, Germany | |
| Only in recent years has an understanding of the structures of disks around high-mass stars become established, and initial studies suggest that disks around high-mass stars are not merely scaled-up versions of those around lower mass stars. In order to probe the inner regions of these systems, we have been conducting a large survey with MIDI, the 8-13 micron instrument of the VLT interferometer, targeting 10 massive YSO candidates with estimated masses between ~4 and ~20 Msun. MIDI provides spectrally resolved measurements (R~35) with angular resolutions down to a few hundredths of an arcsecond, corresponding to a linear scale of a few tens to several hundred AU in our sources. At these scales the infrared emission is dominated by the disks or central envelopes. We will present the initial results of our survey. All targeted objects are spatially resolved in our observations. We present radiative transfer models designed to simultaneously reproduce the spectral energy distribution and the spatially resolved MIDI observations, and discuss the disk structure as well as the contributions of the disk and envelope to the 10 micron emission. | |
| Collaborators: R. van Boekel, MPIA, Germany Th. Henning, MPIA, Germany H. Linz, MPIA, Germany A. Mueller, ESO & MPIA, Germany |
Suggested Session:
Early Phases of Disks, Massive Stars |