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AbstractAbstract
[en] Absolute spectral energy distributions of Type II supernovae have been used to derive a consistent physical picture of their ejected envelopes. Continuum observations are consistent with a photosphere that expands to a radius of 1015 cm and then begins to shrink at nearly constant temperature. The hydrogen recombination implies an electron density which decreases from 1010 to 2times107 cm-3 in a time of 400 days. A total hydrogen mass in excess of 1 M/sub sun/ is required to prevent rapid recombination in the envelope
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Journal Article
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Astrophysical Journal; v. 197(2); p. 415-424
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