Statistics – Computation
Scientific paper
Dec 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aas...181.7605f&link_type=abstract
American Astronomical Society, 181st AAS Meeting, #76.05; Bulletin of the American Astronomical Society, Vol. 24, p.1243
Statistics
Computation
Scientific paper
A simple atmospheric model is used to produce synthetic spectra for Type Ia supernovae from maximum light to one hundred days after maximum light. Computationally, the model is not very demanding, and so it provides an opportunity to explore a wide region of parameter space. The model's essential characteristics are (1) a sharp photosphere with a Planckian photon distribution, (2) an exponential density law, (3) an isothermal envelope, (4) the two-level atom approximation with LTE lower level populations, and (5) atomic data from Kurucz. Comparison of synthetic and observed spectra provides line identification and information about atmospheric structure. This project emphasizes and clarifies the differences between peculiar and normal Type Ia supernovae.
Branch David
Fisher Adam K.
Nugent Peter Edward
Vaughan Thomas E.
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