A Subarcsecond Companion to the T Tauri Star AS 353B

Details A Subarcsecond Companion to the T Tauri Star AS 353B A Subarcsecond Companion to the T Tauri Star AS 353B

2003-10-07

arxiv.org/abs/astro-ph/0310170v1

Astron.J. 127 (2004) 444-448

Astronomy and Astrophysics

Astrophysics

AASTeXv5.0, 21 pages, 5 figures, Astronomical Journal, in press

Scientific paper

10.1086/379961

Adaptive optics imaging of the bright visual T Tauri binary AS 353 with the Subaru Telescope shows that it is a hierarchical triple system. The secondary component, located 5.6" south of AS 353A, is resolved into a subarcsecond binary, AS 353Ba and Bb, separated by 0.24". Resolved spectroscopy of the two close components shows that both have nearly identical spectral types of about M1.5. Whereas AS 353A and Ba show clear evidence for an infrared excess, AS 353Bb does not. We discuss the possible role of multiplicity in launching the large Herbig-Haro flow associated with AS 353A.

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