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Astron. Astrophys. 321, 568-574 (1997)

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The molecular envelope around T Tauri and the nature of NGC 1555

K.-F. Schuster 1, 2, 5, A.I. Harris 1, 3, 5 and A.P.G. Russell 1, 4, 5

1 Max-Planck-Institut für Extraterrestrische Physik D-85740 Garching, Germany.
2 Institut de Radio Astronomie Millimetrique, F-38406 St Martin d'Heres Cedex, France
3 Five College Astronomy Department; and Department of Physics and Astronomy, University of Massachusetts, USA
4 Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK
5 Visiting Astronomer at the James Clerk Maxwell Telescope

Received 4 June 1996 / Accepted 10 October 1996


We present maps of the [FORMULA] CO(3-2) and C [FORMULA] O(2-1) emission around T Tauri. By comparison of the two lines measured with similar spatial resolution we are able to discriminate between the different components of molecular circumstellar material and to derive constraints for possible source models. In particular we are able to trace the outflowing molecular components. We propose a multiple outflow system with stellar wind envelope interaction to explain the morphology and dynamics of the [FORMULA] CO(3-2) and C [FORMULA] O(2-1) emitting gas.

Key words: stars: T Tau – ISM: NGC 1555 – ISM: jets and outflows – radio lines: ISM – stars: pre-main-sequence

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© European Southern Observatory (ESO) 1997

Online publication: June 30, 1998