Mid-infrared Imaging of a Disk around the Vega-Excess Star 49 Cet

Details Mid-infrared Imaging of a Disk around the Vega-Excess Star 49 Cet Mid-infrared Imaging of a Disk around the Vega-Excess Star 49 Cet

Dec 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...195.2503g&link_type=abstract

American Astronomical Society, 195th AAS Meeting, #25.03; Bulletin of the American Astronomical Society, Vol. 31, p.1409

Astronomy and Astrophysics

Astronomy

1

Scientific paper

We present Keck imaging of the Vega-excess star, 49 Cet, at 17.9 microns. Low-level emission is elongated 1.5'' about the star at a Position Angle of 40 degrees. Assuming a Hipparcos distance of 61 pc, this indicates a diameter of 100 AU for the mid-infrared emission. Preliminary fits of a two-part disk model to both the mid-infrared image and unresolved IRAS fluxes indicate that the disk is composed of an inner tenuous component of warm dust surrounded by a cold dense outer disk.

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