Proper Motions of Herbig-Haro Jets

Details Proper Motions of Herbig-Haro Jets Proper Motions of Herbig-Haro Jets

Jul 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996hst..prop.6794r&link_type=abstract

HST Proposal ID #6794

Physics

Hst Proposal Id #6794 Binaries And Star Formation

Scientific paper

We propose to re-observe the four Herbig-Haro jets and associated bow shocks which our group imaged with WFPC2 during Cycle 4, in order to measure the proper-motions of these high Mach number flows. The tangential velocities of several hundred km/s will produce displacements between our first- and second-epoch images of 2-4 pixels after only two years. Our first-epoch HST images have revealed that Herbig-Haro jets possess an astonishing amount of internal structure. The proposed second-epoch images add crucial physical knowledge -- how these newly disclosed structural components move. Our targets are the four best known, and most studied, HH flows: HH 47, HH 111, HH 34 and HH 1/2.

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