Discovery of Outlying High-Velocity Oxygen-Rich Ejecta in Cassiopeia A
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Fesen, Robert A; Hammell, Molly; Morse, Jon; Chevalier, Roger A; Borkowski, Kazimierz J; Dopita, Michael; Gerardy, Christopher L; Lawrence, Stephen S; Raymond, John C; van den Bergh, Sidney
Description
Analysis of broadband HST ACS and WFPC2 images of the young Galactic supernova remnant Cassiopeia A reveals a far larger population of outlying, high-velocity knots of ejecta with a broader range of chemical properties than previously suspected. In this paper, we concentrate on a ≃ 1.5 arcmin2 region located along the eastern limb of the remnant where we identify three main classes of outer ejecta: (1) knots dominated by [N II] λλ6548, 6583 emission, (2) knots dominated by oxygen emission...[Show more]
Collections | ANU Research Publications |
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Date published: | 2006 |
Type: | Journal article |
URI: | http://hdl.handle.net/1885/31556 |
Source: | Astrophysical Journal, The |
DOI: | 10.1086/498092 |
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01_Fesen_Discovery_of_Outlying_2006.pdf | 1.78 MB | Adobe PDF | Request a copy |
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