Classification of Supernovae
The fundamental classification scheme for supernovae is based on their spectra. As we learn more, the scheme becomes more complex, and it may be that every supernova is unique in some aspect. There have certainly been a number of interesting surprises in the last few years for a field that is nearly 50 years old. In this chapter we give an updated summary of supernova spectral classifications, emphasizing recently introduced subtypes and the importance of late-time spectra. Other recent discussions of supernova classifications may be found in the chapter by Branch in this volume and by Filippenko (1989). Porter and Filippenko (1987) have summarized the observed properties of SN Ib events.
KeywordsRecombination Helium Barium Stratification Expense
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