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A Two-Dimensional Near-Infrared Speckle Imaging Survey of T Tauri Stars in Taurus and Ophiuchus

Ghez, A. and Neugebauer, G. and Matthews, K. (1992) A Two-Dimensional Near-Infrared Speckle Imaging Survey of T Tauri Stars in Taurus and Ophiuchus. In: Complementary Approaches to Double and Multiple Star Research. ASP Conference Series. No.32. Astronomical Society of the Pacific , San Francisco, CA, pp. 1-9. ISBN 0-937707-51-1. https://resolver.caltech.edu/CaltechAUTHORS:20170920-113032580

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Abstract

We present the results of a magnitude limited (K≤8.5 mag) multiplicity survey of T Tauri stars in the two nearest star forming regions, Taurus-Auriga and Ophiuchus-Scorpius (D = 150 pc), observable from the northern hemisphere. Each of the 70 stars in the sample was imaged at 2.2 μm using two-dimensional speckle interferometry resulting in a survey sensitive to binary stars with separations ranging from 0.″09 to about 2″.5. The frequency of double stars with separation in this range is 46±8%. A division between the classical T Tauri stars and the weak-lined T Tauri stars shows no distinction. Furthermore, no difference is observed between the binary frequencies in the two star forming regions although the clouds have very different properties. Given the limited angular separation range that this survey is sensitive to, both the spectroscopic and wide binaries will be missed. The rate at which binaries are detected suggests that most, if not all, T Tauri stars have companions.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1017/S0252921100006059DOIArticle
http://www.aspbooks.org/a/volumes/article_details/?paper_id=7590PublisherArticle
http://adsabs.harvard.edu/full/1992ASPC...32....1GADSArticle
ORCID:
AuthorORCID
Ghez, A.0000-0003-3230-5055
Additional Information:© 1992 Astronomical Society of the Pacific.
Series Name:ASP Conference Series
Issue or Number:32
Record Number:CaltechAUTHORS:20170920-113032580
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20170920-113032580
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:81623
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:20 Sep 2017 18:59
Last Modified:30 Oct 2019 22:05

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