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Spectrum synthesis of the Type Ia supernovae SN 1992A and SN 1981B (1995)

Branch, David ; Baron, E. ; Hauschildt, Peter H. ; [et al.]

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Publication Date: 2019-08-28

Description: We present non-local thermodynamic equilibrium (non-LTE) synthetic spectra for the Type Ia supernovae SN 1992A and SN 1981B, near maximum light. At this epoch both supernovae were observed from the UV through the optical. This wide spectral coverage is essential for determining the density structure of a SN Ia. Our fits are in good agreement with observation and provide some insight as to the differences between these supernovae. We also discuss the application of the expanding photosphere method to SNe Ia which gives a distance that is independent of those based on the decay of Ni-56 and Cepheid variable stars.

Keywords: ASTROPHYSICS

Type: Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X); 441; 1; p. L33-L36

Format: text

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