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Table 4

Percentage of dust mass, Mresidual/Minit, surviving the passage of the reverse shock in Cas A, evaluated in two different stages of supernova evolution identified by the corresponding values of α.

T a α = 0.33 b α = 0 c BS07d
(K) Am C MgSiO3 Am C MgSiO3 C+Fe3O4

~107 16.9% 13.4% 15.9% 11.8% ~7.5%
~108 13.3% 10.4% 12.3% 8.7%

Notes. The result from Bianchi & Schneider (2007) is reported for comparison.


Temperature of the smooth ejecta.


Corresponding to 2004 (333 yr after explosion).


After the reverse shock has reached the centre of the remnant (~8000 yr after explosion).


Derived from Bianchi & Schneider (2007): gas temperature between 107 and 108 K; surviving mass calculated after the reverse shock has hit the centre of the remnant.

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