The First Resolution of the 0.1 arc sec Binary T Tau Sa and Sb at 10 micron with MMT Mid-IR AO and Super-Resolution

Details The First Resolution of the 0.1 arc sec Binary T Tau Sa and Sb at 10 micron with MMT Mid-IR AO and Super-Resolution The First Resolution of the 0.1 arc sec Binary T Tau Sa and Sb at 10 micron with MMT Mid-IR AO and Super-Resolution

Jun 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007lyot.confq..47s&link_type=abstract

Proceedings of the conference In the Spirit of Bernard Lyot: The Direct Detection of Planets and Circumstellar Disks in the 21s

Astronomy and Astrophysics

Astronomy

Scientific paper

Although T Tauri is one of the most studied objects in astronomy, the nature of its circumstellar environment remains elusive due to the small angular separation of its three components (N, Sa, and Sb; all within 1). However, the long temporal baseline of observations and astrometric orbital solution of T Tauri make it a unique laboratory for studying the physics of circumstellar disks in multiple object systems. We present a new technique where we estimate spatial frequencies from high resolution, short wavelength data to eliminate degrees of freedom from super-resolution Mid-IR AO PSF fitting. The method allows us to resolve the Southern components T Tau Sa and Sb at a separation of 0.3 lambda/D (0.1) using MIRAC4 and Mid-IR AO on the MMT at ~98% Strehls. Our results include 10% filters on and off the 10 micron silicate feature (and broad N), and we review how these new measurements help us understand the circumstellar structure and composition of the enigmatic T Tauri triple system.

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