The Shock Wave Structure of Herbig-Haro Objects

Details The Shock Wave Structure of Herbig-Haro Objects The Shock Wave Structure of Herbig-Haro Objects

Jul 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991hst..prop.2243s&link_type=abstract

HST Proposal ID #2243

Physics

Hst Proposal Id #2243

Scientific paper

Herbig-Haro (HH) nebulae are a class of objects produced by shock waves in supersonic jets (often bipolar) from young stellar objects. The shock wave structure can reveal much useful information concerning the physical conditions in the jets and the ambient medium. The detailed geometrical struc- ture of the shocks is still unclear, especially for the semi- stellar knots found in many HHs. Some studies suggest that they may be manifestations of radiative bow shocks, but see- ing limitations of ground-based imaging have precluded a determination of the shock structure of the knots. We pro- pose to obtain images of HH 2 with the PC over a wide range of excitation in order to allow a detailed shock wave analy- sis which incorporates information on the geometrical struc- ture of the objects. The goal is to obtain information on the flow parameters in the shock wave and to incorporate theoretical shock wave modeling to interpret the flow. Such information is crucial toward developing a more complete understanding of processes which occur in the early history of star formation.

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