Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992dudi.work...29m&link_type=abstract
"Dusty Discs, Proceedings of the 9th RAL Workshop on Astronomy and Astrophysics. Edited by P.M. Gondhalekar.
Astronomy and Astrophysics
Astrophysics
Scientific paper
The author presents calculations of model spectral energy distributions for dusty circumstellar disks in low-mass pre-main sequence systems, and he compares these results with new millimetre and submillimetre continuum observations. Beckwith and Sargent (1991) observed many of the T Tauri systems studied here at 600, 800 and 1100 μm and they have extended this coverage down to 350 μm and up to 2 mm in the hope that disk parameters (e.g. mass and dust opacity) might be better constrained. The author investigates model-fitting by sampling in a 2-dimensional parameter space to illustrate the ambiguity of the simultaneous determination of disk masses and dust grain opacities. The answer to the question posed in the title of this paper is: much, but with due regard for the inherent uncertainties involved.
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