Adaptive Optics Nulling Interferometric Observations of AB Aur and V892 Tau: Resolved Disks in the Mid-IR

Details Adaptive Optics Nulling Interferometric Observations of AB Aur and V892 Tau: Resolved Disks in the Mid-IR Adaptive Optics Nulling Interferometric Observations of AB Aur and V892 Tau: Resolved Disks in the Mid-IR

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...205.1716l&link_type=abstract

American Astronomical Society Meeting 205, #17.16; Bulletin of the American Astronomical Society, Vol. 36, p.1367

Physics

Optics

Scientific paper

We present the results of adaptive optics nulling interferometric observations of two Herbig Ae stars, AB Aur and V892 Tau, at 10.3 microns. Our observations show resolved circumstellar emission from both sources. The emission from AB Aur suggests that there is an inclined disk surrounding the star. The diameter of the disk is derived to be 24 to 30 AU with an inclination of 45 to 65 degrees from face-on, and a major-axis PA of 30 +/- 15 degrees (E of N). Differences in the physical characteristics between the mid-IR emission and emission at other wavelengths found in previous studies suggest a complex structure for AB Aur's circumstellar environment, which may not be explained by a disk alone. The similarity in the observed size of AB Aur's resolved emission and that of another Herbig Ae star, HD 100546, is likely coincidental, as their respective evolutionary states and spectral energy distributions suggest significantly different circumstellar environments.
The PI was supported under a Michelson Graduate Fellowship

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