Mathematics – Probability
Scientific paper
Jul 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003hst..prop.9901r&link_type=abstract
HST Proposal ID #9901
Mathematics
Probability
Hst Proposal Id #9901 Ism And Circumstellar Matter
Scientific paper
We propose to study the shortlived event when a high-velocity protostellar outflow collides with a dense molecular cloud core. It has recently been realized that Herbig-Haro flows can attain gigantic proportions, with flow lobes stretching over many parsecs. This greatly increases the probability that an outflow rams into an obstacle such as a molecular cloud core as it plows through the interstellar medium. The HH 110 flow represents the rare case of an outflow that has suffered a grazing collision with a cloud core. Fortunately, the resulting shock is so bright that only a few orbits are required for analysis. ACS imaging in Halpha in Cycles 12 and 14 will permit the study of detailed structure and kinematics of the flow as it passes through the region of impact. This study has consequences for our general understanding of the energy cycle and chemical processing of the interstellar medium, turbulence in molecular clouds, and the role of sequential star formation among low mass stars.
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