AAS 205th Meeting, 9-13 January 2005
Session 117 Star Formation, Embedded Young Stars and Their Disks
Oral, Wednesday, January 12, 2005, 10:00-11:30am, Golden Ballroom

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[117.05] Probing the dusty disk around the Herbig Ae star MWC 480

M. Hamidouche, L. W. Looney, J. Shaw (UIUC)

It is already quite evident that some Herbig AeBe stars are surrounded by circumstellar dusty disk (e.g. Fuente et al 2003, Natta et al. 2004). We present sub-arcsecond resolution observations at \lambda = 1mm of dust continuum emission from circumstellar structures around the Herbig AeBe star MWC 480. We have detected a disk-like structure around the star. This is the first well resolved Herbig Ae disk at 1.3 mm. We deduced from the best fit Gaussian a FWHM of 100 AU. We deduce a disk mass of ~ 0.017 M\odot assuming optically thin emission. We focus the discussion upon the morphology of the disk and use models to infer the physical parameters (e.g. the density profile). In addition, we discuss a new method with which to fit the numerical model to interferometric data of circumstellar structures around Herbig AeBe stars and T Tauri stars. This method allows us to compare complete Fourier dataset to the Model.

The author(s) of this abstract have provided an email address for comments about the abstract: mhamidou@uiuc.edu

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Bulletin of the American Astronomical Society, 36 5
© 2004. The American Astronomical Society.