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T Tauri Multiple Systems

Published online by Cambridge University Press:  23 September 2016

Alexis Brandeker
Alexis Brandeker*
Affiliation:
Stockholm Observatory, AlbaNova University Centre, SE-106 91 Stockholm, Sweden

Abstract

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New high-resolution adaptive optics systems provide an unprecedentedly detailed view of nearby star forming regions. In particular, young nearby T Tauri stars can be probed at much smaller physical scales (a few AU) than possible just a decade ago (several tens of AU). Of major importance is closing the sensitivity gap between imaging and spectral surveys for stellar companions. This allows for 1) calibration of pre-main-sequence evolutionary tracks by obtaining accurate dynamical masses, 2) resolving confusion problems arising by placing unresolved systems in colour-magnitude diagrams, and 3) well defined and determined multiplicity fractions of young stellar systems, important for discriminating star formation scenarios. This article briefly reviews the current status of high resolution imaging of T Tauri multiple systems, and what we can expect to learn from them in the near future.

Type
Part 5: Low Mass Star Formation
Information
Symposium - International Astronomical Union , Volume 221: Star Formation at High Angular Resolution , 2004 , pp. 229 - 236
Copyright
Copyright © Astronomical Society of the Pacific 2004 

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