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arXiv · 0807.4121

Young massive stars and their environment in the mid-infrared at high angular resolution

W. J. de Wit·M. G. Hoare·R. D. Oudmaijer·T. Fujiyoshi·;
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Abstract

We present interferometric and single-dish mid-infrared observations of a sample of massive young stellar objects (BN-type objects), using VLTI-MIDI (10 micron) and Subaru-COMICS (24.5 micron). We discuss the regions S140, Mon R2, M8E-IR, and W33A. The observations probe the inner regions of the dusty envelope at scales of 50 milli arcsecond and 0.6 arcsec (100-1000 AU), respectively. Simultaneous model fits to spectral energy distributions and spatial data are achieved using self-consistent spherical envelope modelling. We conclude that those MYSO envelopes that are best described by a spherical geometry, the commensurate density distribution is a powerlaw with index -1.0. Such a powerlaw is predicted if the envelope is supported by turbulence on the 100-1000AU scales probed with MIDI and COMICS, but the role of rotation at these spatial scales need testing.

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W. J. de Wit, M. G. Hoare, R. D. Oudmaijer, T. Fujiyoshi, ;. 2008-07-25. Young massive stars and their environment in the mid-infrared at high angular resolution. https://doi.org/10.1088/1742-6596/131/1/012022

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