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Disk Clearing in the Young Binary AK Sco

Published online by Cambridge University Press:  13 May 2016

Eric L. N. Jensen
Eric L. N. Jensen*
Affiliation:
Swarthmore College, Dept. of Physics & Astronomy, Swarthmore, PA 19081 USA

Abstract

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The pre–main-sequence spectroscopic binary AK Sco is surrounded by a circumbinary disk. Yet while this disk must be somewhat disturbed by the binary at its center, there is no evidence from current data that it has a cleared central hole like those seen in some young binaries, nor that accretion from the outer disk has been cut off. Indeed, most of its spectral and photometric diagnostics are indistinguishable from those of young single stars. Why doesn't this system show any evidence of disturbance of its disk? It may be that the center of the disk is indeed largely cleared, but that a small amount of dust in this region supplies the observed near-infrared excess.

Type
VIII. Environments of Young Binaries - Indirect Observations
Information
Symposium - International Astronomical Union , Volume 200: The Formation of Binary Stars , 2001 , pp. 342 - 345
Copyright
Copyright © Astronomical Society of the Pacific 2001 

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