Probing the dusty disk around the Herbig Ae star MWC 480

Details Probing the dusty disk around the Herbig Ae star MWC 480 Probing the dusty disk around the Herbig Ae star MWC 480

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...20511705h&link_type=abstract

American Astronomical Society Meeting 205, #117.05; Bulletin of the American Astronomical Society, Vol. 36, p.1544

Astronomy and Astrophysics

Astronomy

Scientific paper

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 λ = 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&sun; 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.

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