Observation of a Lunar Occultation of T Tauri

Details Observation of a Lunar Occultation of T Tauri Observation of a Lunar Occultation of T Tauri

Jan 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996apj...456l..41s&link_type=abstract

Astrophysical Journal Letters v.456, p.L41

Astronomy and Astrophysics

Astronomy

15

Stars: Binaries: General, Stars: Pre-Main-Sequence

Scientific paper

We observed the 1994 December 16 (UT) lunar occultation of the binary system T Tau in the infrared K and L' bands. T Tau N, the visible light star, and T Tau S, the IR luminous companion, appeared unresolved along the direction of the occultation. At L', both objects are smaller than 3 AU. At K, T Tau N and S are smaller than 1 AU. The natural interpretation is that both components are stellar and that the extinction along our line of sight to T Tau S is greater than that to T Tau N. At the time of the occultation, the K-band flux of T Tau S had decreased to nearly the value it had before the flare that began in the late 1980s while the L'-band flux was still elevated; this flux decrease with time supports the suggestion published by Ghez et al. in 1991 that T Tau S experienced a FU Orionis--like outburst.

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