Speckle Imaging of T-Tauri Stars in the L and M Near Infrared Bands

Details Speckle Imaging of T-Tauri Stars in the L and M Near Infrared Bands Speckle Imaging of T-Tauri Stars in the L and M Near Infrared Bands

Mar 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...283..827t&link_type=abstract

Astronomy and Astrophysics, Vol. 283, NO. 3/MAR(III), P. 827, 1994

Astronomy and Astrophysics

Astrophysics

21

Stars: Pre-Main Sequence - Stars: Binaries: Visual - Stars: Imaging - Infrared: Stars - Techniques: Interferometric

Scientific paper

We present the results of speckle observations of to classical T Tauri stars (CTTS) in the U (3.87μm) and M (4.8μm) near-IR bands. These wavelengths were selected in order to search for cold companions to with a strong IR excess. No new companions were found but known close IR companions were measured in U, most of which had previously been detected at K, thus providing the K-L color of each component. No extended structures beyond 15 AU are detected in any of the observed T Tauri stars. The young binary system Z CMa has also been resolved at M but the extended structure reported by Malbet et al. (1993) is not seen in our data to an upper limit in flux ratio of 5%.

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