C. H. Chen and M. Jura 2003 ApJ 591 267 doi:10.1086/375265
The Mid-Infrared-emitting Dust around AB Aurigae
FREEC. H. Chen1 and M. Jura1
Show affiliationsUsing the Keck I telescope, we have obtained 11.7 and 18.7 μm images of the circumstellar dust emission from AB Aur, a Herbig Ae star. We find that AB Aur is probably resolved at 18.7 μm with an angular diameter of 1
2 at a surface brightness of 3.5 Jy arcsec-2. Most of the dust mass detected at millimeter wavelengths does not contribute to the 18.7 μm emission, which is plausibly explained if the system possesses a relatively cold, massive disk. We find that models with an optically thick, geometrically thin disk surrounded by an optically thin spherical envelope fit the data somewhat better than flared disk models.
- Subject headings
circumstellar matter; planetary systems: formation; stars: early-type; stars: individual (AB Aurigae)
- Dates
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Issue 1 (2003 July 1)
Received 2002 October 17, accepted for publication 2003 March 3
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The Mid-Infrared-emitting Dust around AB Aurigae
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