Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aas...197.0819c&link_type=abstract
American Astronomical Society, 197th AAS Meeting, #08.19; Bulletin of the American Astronomical Society, Vol. 32, p.1409
Astronomy and Astrophysics
Astronomy
1
Scientific paper
We have obtained high resolution (0.20-0.45" ) mid infrared images at 8, 11.7 and 18.7 μ m of the Herbig Ae/Be stars: WL 16, LkHα 234 and AB Aur, using the Keck I telescope. A circumstellar disk is resolved around WL 16 at all three wavelengths, with an angular size of 5.6" at 11.7 μ m at 10% of the peak surface brightness. The previously detected disk-like structure associated with the NW companion of LkHα 234 (Polomski et al. 2000) is also resolved at all three wavelengths and is measured to have an angular size of 2.6" at 18.7 μ m. AB Aur is resolved at 18.7 μ m and appears elongated in one direction with an angular size of 1.4" at 10% of the peak surface brightness. We discuss the macroscopic geometries of the dust, disk/envelope sizes, and total masses of dust detected in addition to grain properties (temperature, size).
Chen Christine H.
Jura Michael
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