The physical conditions pertaining to some possible supernova remnants
NOTE: Text or symbols not renderable in plain ASCII are indicated by [...]. Abstract is included in .pdf document. A large number of spectrophotometric observations have been made of 16 individual filaments in five possible supernova remnants, S 22, S 147, IC 443, NGC 6888, and the Cygnus Loop. U...
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https://thesis.library.caltech.edu/1548/1/Parker_rar_1963.pdfParker, Robert A. R. (1963) The physical conditions pertaining to some possible supernova remnants. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/XGR5-7574. https://resolver.caltech.edu/CaltechETD:etd-04292008-090916 <https://resolver.caltech.edu/CaltechETD:etd-04292008-090916>