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First Results from a STIS Survey of Close Pre-Main Sequence Binaries in Taurus

Published online by Cambridge University Press:  13 May 2016

Scott J. Kenyon  and
Patrick Hartigan
Scott J. Kenyon
Affiliation:
Smithsonian Astrophysical Observatory, Mail Stop 15, 60 Garden St. Cambridge MA 02138
Patrick Hartigan
Affiliation:
Department of Physics and Astronomy, Rice University, 6100 S. Main, Houston TX 77005–1892

Abstract

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We describe preliminary results of an HST survey of pre-main sequence binary stars in the Taurus-Auriga cloud. We use STIS medium and low resolution spectra to derive the reddening, spectral type, and veiling for each component of close pairs with angular separations ≲ 1″. This sample yields a frequency of mixed pairs, containing one classical and one weak emission T Tauri star, similar to that of wide pre-main sequence binaries. The components of most pairs are coeval, but the secondaries in four pairs are significantly younger than the primaries for the three sets of evolutionary tracks we considered.

Type
VIII. Environments of Young Binaries - Indirect Observations
Information
Symposium - International Astronomical Union , Volume 200: The Formation of Binary Stars , 2001 , pp. 323 - 331
Copyright
Copyright © Astronomical Society of the Pacific 2001 

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