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Dusty Disks in the Multiple Systems UZ Tau and GG Tau1

Published online by Cambridge University Press:  12 April 2016

M. Simon
Affiliation:
Astronomy Program, SUNY, Stony Brook, NY 11794, USA
S. Guilloteau
Affiliation:
IRAM, 300 Rue de la Piscine, F-38406 Saint Martin d’Hères, France

Abstract

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Interferometric observations of the 2.6 mm dust thermal emission around the T Tauri triple system UZ Tau show that most of it is equally divided between UZ Tau W (the close binary) and UZ Tau E. The emission is at least partially optically thick at 2.6 mm which implies an origin in disks of size ~ 13 AU and mass ~ 0.024 M. The 2.6 mm emission of the GG Tau system, a hierarchical quadruple, is partially resolved. Strong emission extended over ~ 3″ × 5″ is associated with the close binary GG Tau. Weak emission is detected at GG Tau/c, also a close binary. Evidently extensive dusty disks can survive in the environment of close binaries for at least ~ 105 y, and their structure can vary markedly from system to system.

Type
Pre-Main Sequence & Young Binaries
Copyright
Copyright © Astronomical Society of the Pacific 1992

Footnotes

1

Astrophysical Journal Letters, submitted

References

1 Astrophysical Journal Letters, submitted