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Session 46 - Supernova Remnants.
Display session, Tuesday, January 14
Metropolitan Ballroom,
Deep H\alpha observations of the region around the supernova remnant RCW 86 have revealed a faint complex of filaments stretching along almost the complete periphery of the remnant. The optical observations consist of CCD images made with the UM/CTIO Curtis Schmidt telescope using narrow-band H\alpha, [S II], and red continuum filters. The newly discovered filaments show up only in H\alpha, providing evidence that these are so-called ``Balmer-dominated'' filaments, which are signatures of non-radiative, collisionless shocks. Comparison of the filaments with radio and X-ray images shows large scale similarities with various interesting small scale differences between the various bands.
The author(s) of this abstract have provided an email address for comments about the abstract: chris@astro.lsa.umich.edu