SIMBAD references

1994A&A...287L..25V - Astronomy and Astrophysics, volume 287, L25-28 (1994/7-2)

The spatial distribution of excited H2 in T Tau: a molecular outflow in a young binary system.

VAN LANGEVELDE H.J., VAN DISHOECK E.F., VAN DER WERF P.P. and BLAKE G.A.

Abstract (from CDS):

Strong extended emission from molecular hydrogen in the v=1->0S(1) transition is mapped around T Tau. In addition, the v=2->1S(1) line is detected close to the star. The ratio of the two transitions is consistent with an excitation process in which both fluorescence by stellar ultraviolet radiation and collisions in a warm, dense medium play a role. The morphology is interpreted as emission from a molecular outflow which appears to wiggle as a result of the fact that T Tau is a binary system seen almost pole-on. It is shown that an outflow with a small opening angle can reproduce the observed extended emission. From compadson with previous studies it is argued that the molecular outflow originates from T Tau S, the infrared component. The presented model constrains the orientation and geometry of the system.

Abstract Copyright:

Journal keyword(s): stars: individual: T Tau - stars: pre-main-sequence - stars: formation - stars: binaries - ISM: jets and outflows - ISM: molecules

Simbad objects: 1

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