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GG Tau: the Ringworld Revisited

Published online by Cambridge University Press:  13 May 2016

Stéphane Guilloteau  and
Anne Dutrey
Stéphane Guilloteau
Affiliation:
IRAM, 300 rue de la piscine, F-38406 Saint Martin d'Hères Cedex, FRANCE
Anne Dutrey
Affiliation:
IRAM, 300 rue de la piscine, F-38406 Saint Martin d'Hères Cedex, FRANCE

Abstract

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GG Tau is a textbook example of a binary system. The circumstellar material around GG Tau is divided in several distinct regions: 1) small, low mass, circumstellar disks, detected in the near-IR and mm domain, 2) a well defined ring, of inner radius 180 AU, detected in the mm domain and in scattered near-IR light, 3) a more extended, colder disk detected in the 13CO(2–1) and 13CO(1–0) lines. Recent observations of the 12CO(2–1) clearly show this extended disk, but also reveal a fourth component of the circumstellar material: (relatively) diffuse and hot gas in the tidally unstable region. Estimate of the gas content suggest this material may be feeding the inner disks at about 10−6 M⊙/yr.

Type
VII. Environments of Young Binaries - Direct Imaging
Information
Symposium - International Astronomical Union , Volume 200: The Formation of Binary Stars , 2001 , pp. 229 - 233
Copyright
Copyright © Astronomical Society of the Pacific 2001 

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