Dual imaging polarimetry observations of circumstellar matter in TW Hydrae: the NACO view

Details Dual imaging polarimetry observations of circumstellar matter in TW Hydrae: the NACO view Dual imaging polarimetry observations of circumstellar matter in TW Hydrae: the NACO view

Oct 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003esasp.539..447h&link_type=abstract

In: Proceedings of the Conference on Towards Other Earths: DARWIN/TPF and the Search for Extrasolar Terrestrial Planets, 22-25 A

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Circumstellar Disks, Tw Hydrae, Dual Imaging Polarimetry

Scientific paper

We present adaptive optics (AO) dual imaging polarimetry observations of two stars in the TW Hydrae association: TW Hya and TWA 11 (HR 4796). These young stars (age ~ 10 Myr) are surrounded by circumstellar matter. We have checked the ability of NAOS-CONICA at the VLT, in combination with a Wollaston prism, to detect and resolve the disks around them. We have been able to image the innermost parts of these disks (down to 11 AU for TW Hya and 5 AU for HR 4796) and to derive polarization intensity profiles. We show that AO dual imaging polarimetry is a suitable technique to detect and study circumstellar disks.

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