Abstract
Optical spectrophotometry constitutes the most important kind of data from supernovae. At effective temperatures in the range of 5 – 10000 Kelvin, the expanding envelope emits the bulk of electromagnetic energy in the optical and near—infrared range. A record of this energy therefore provides key information about the physical conditions at the photosphere (temperature, radius, and density), as well as in the layers above it (geometry, composition, and ionization state from the line spectrum and from detailed line profiles). Thus, optical spectrophotometry provides an essential key for the understanding of the physical processes in the debris from the fatal explosion.
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Hanuschik, R.W. (1991). Optical Spectrophotometry of Supernova 1987A: The First 133 Days. In: Woosley, S.E. (eds) Supernovae. Santa Cruz Summer Workshops in Astronomy and Astrophysics. Springer, New York, NY. https://doi.org/10.1007/978-1-4612-2988-9_3
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