Computer Science
Scientific paper
Jul 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991hst..prop.2493w&link_type=abstract
HST Proposal ID #2493
Computer Science
Hst Proposal Id #2493
Scientific paper
NOTE: Due to the reduced image quality of HST, we have deleted the FOC spectroscopic observations from this project. The original abstract_temp follows We aim to study the interaction between jets and the interstellar medium in the central few kpc of the Seyfert galaxy Markarian 78. In a recent long-slit survey of Seyfert galaxies, MKN 78 was identified as the outstanding example in which [OIII] lambda5007 profile structure clearly reveals the interaction between radio jets and the interstellar medium. Even in this optimum case, however, the important structures are within a few arcsec of the nucleus, and HST resolution is needed to trace the interaction in detail. We shall take a narrow band [OIII] image with the PC and, using image reconstruction, identify emission structures on equivalent scales tothe radio structure revealed by a new 2 cm VLA radio map (0."1 resolution). These observations will allow us to define the intensity distributions of the emission components over the nuclear regions. We aim to test two current models: acceleration and compression behind the lobe bow shock and entrainment along the length of the jet. In a number of ways, these observations will match those of NGC1068 recently made by HST.
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