When Disk Models Meet Long-baseline Interferometry

Details When Disk Models Meet Long-baseline Interferometry When Disk Models Meet Long-baseline Interferometry

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.5713t&link_type=abstract

American Astronomical Society, AAS Meeting #211, #57.13; Bulletin of the American Astronomical Society, Vol. 39, p.832

Astronomy and Astrophysics

Astronomy

Scientific paper

Numerical models that contain only a few free parameters such as the disk density at the stellar surface and power law index n, which is used to describe the variation of the disk density in the radial direction, can often successfully represent gaseous disks around early-type stars. Typically the model parameters are obtained by fitting the model spectral energy distribution to IR photometry. We demonstrate how the model parameters can be further constrained by the combination of long-baseline interferometric and spectroscopic observations. In particular we show how the Fourier transforms of synthetic images produced by the numerical models can be directly compared to interferometric data. We apply this technique to photometric, spectroscopic, and interferometric observations of the Be star chi Oph to obtain the disk parameters for this system.

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