AAS 198th Meeting, June 2001
Session 18. Protostellar Disks
Oral, Monday, June 4, 2001, 10:00-11:30am, C104

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[18.02] A High Dynamic Range Dual Imaging Polarimetric Survey of Circumstellar Disks around Young Stars using Gemini North with Hokupa`a

D. Potter, P. Baudoz, O. Guyon (IfA), W. Brandner (ESO), L. Close (Steward Observatory), J.E. Graves, M. Northcott (Zyoptics, Palo Alto, CA)

We present results from a survey of circumstellar disks around young stars in the Taurus star-forming region and in the TW Hydrae association using a dual imaging polarimetric technique with adaptive optics. This technique suppresses speckle noise, which improves our sensitivity in detecting polarized light near bright stars. We present high resolution (75 mas) H-band polarimetry maps of circumstellar disks found around TW Hydrae, LkCa 15, GM Aur, and GG Tau and will discuss techniques used to extract physical properties of these disks from the polarization measurements. These observations were obtained with the University of Hawaii curvature sensing adaptive optics system, Hokupa`a, at the Gemini North 8m telescope.

This research acknowledges support by the National Science Foundation.

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The author(s) of this abstract have provided an email address for comments about the abstract: potter@ifa.hawaii.edu

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