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R. Sankrit, W. P. Blair (JHU), L. Rudnick, T. Delaney (Univ. of Minnesota), I. M. Harrus (GSFC)
We present observations of Kepler's supernova remnant obtained with the Advanced Camera for Surveys on board the Hubble Space Telescope. Images obtained through narrowband filters isolating H\alpha, [N~II] and [O~III] emission show a wealth of structure on sub-arcsecond scales. There are a wide array of morphologies, and dramatic variations in the relative [N~II] and [O~III] brightnesses among the knots and filaments. A comparison of these HST images with ground based line filter images show that knots evolve on time scales of a decade. The proper motion of non-radiative filaments in the North indicate shock speeds of about 2000--2500~km/s.
We acknowledge support from grant HST-GO-09731.01-A to the Johns Hopkins University.
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Bulletin of the American Astronomical Society, 36 #2
© YEAR. The American Astronomical Soceity.