491 citations · 931 across the 4 of their papers we have counts for
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The Expansion Asymmetry and Age of the Cassiopeia A Supernova Remnant
R. A. Fesen, M. C. Hammell, J. Morse +7
HST ACS images of the young SN remnant Cas A are used to explore the expansion and spatial distribution of its highest velocity debris. Proper motions of over 1800 outlying ejecta…
Optical Structure and Proper-Motion Age of the Oxygen-rich Supernova Remnant 1E 0102-7219 in the Small Magellanic Cloud
Steven L. Finkelstein, Jon A. Morse, James C. Green +12
We present new optical emission-line images of the young SNR 1E 0102-7219 (E0102) in the SMC obtained with the HST Advanced Camera for Surveys (ACS). E0102 is a member of the oxyge…
Hubble Space Telescope WFPC-2 Imaging of Cassiopeia A
Robert A. Fesen, Jon A. Morse, Roger A. Chevalier +4
The young SNR Cassiopeia A was imaged with WFPC-2 through four filters selected to capture the complete velocity range of the remnant's main shell in several important emission lin…