Abstract

ABSTRACT The Wisconsin low-resolution spectrophotometer was used to measure the absolute H flux from HR Del in August 1975. Using nebular temperatures from earlier measurements, the mass of the nebula is about 10- ')) . This is in reasonable agreement with results from other methods of estimating the mass of ejecta from HR Del, and is consistent with nova models in which radiation pressure drives mass loss. Key words: nebular remnant- spectrophotometry

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