Physics
Scientific paper
Jul 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996hst..prop.6759e&link_type=abstract
HST Proposal ID #6759
Physics
Hst Proposal Id #6759 Binaries And Star Formation
Scientific paper
Although extended jets from young stellar objects {YSOs} represent a rather dramatic demonstration of the outflow phenomenon common to pre-main sequence stars, statistically this phase is short-lived with respect to the classical T Tauri phase. Generally speaking, it is the more heavily extincted, or even embedded, T Tauri stars that display such jets. Recently however we have found evidence that the jet phenomenon may be much more universal than previously thought. A long-slit spectroscopic survey by us now strongly suggests that the high velocity forbidden emission lines seen in many classical T Tauri stars arise from arcsecond or subarcsecond scale jets. The nature of these jets, even their morphology, is however not known even though they are much more common than their extended counterparts. We propose here to carry out the first detailed study of this phenomenon, a task that can only be undertaken using HST. Our proposal concentrates on imaging certain T Tauri stars in the nearby Taurus Auriga Dark Cloud where, on the basis of ground-based observations and theory, one stands an excellent chance of resolving these jets with the PC of the WFPC2. Our targets have also been specially chosen to give us additional information on the evolution of jets in close binaries, a topic about which virtually nothing is known.
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