Chris D. Koresko 1998 ApJ 507 L145 doi:10.1086/311694
A Circumstellar Disk in a Pre-main-sequence Binary Star
FREEChris D. Koresko1
Show affiliationsNew high-resolution images of HK T Tauri B, the companion to the 106 yr old classical T Tauri star HK Tauri A, show it to be surrounded by an optically thick, edge-on circumstellar disk that extends to a radius of at least 50 AU. The images were taken using a modified speckle technique to achieve a linear resolution of 8 AU. The disk is strikingly coherent, showing no evidence of any strong perturbation by the primary star. The disk is illuminated by the central star, and it hides the star from direct view. The small changes in vertical thickness with wavelength require a dust + gas mass 
10-3 M
. The relative position angles of the disk and the binary suggest that the disk probably does not lie in the plane of the binary orbit.
- Subject headings
binaries: visual; circumstellar matter; methods: observational; stars: individual (HK Tauri); stars: pre-main sequence
- Dates
-
Issue 2 (1998 November 10)
Received 1998 June 9, accepted for publication 1998 September 11
Published 1998 September 24
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A Circumstellar Disk in a Pre-main-sequence Binary Star
Chris D. Koresko 1998 ApJ 507 L145
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