![]() This survey is motivated by the discovery of the largest known classical nova shell, which surrounds the archetypal dwarf nova Z Camelopardalis. We are systematically surveying all known and suspected Z Cam- type dwarf novae for classical nova shells. Mizusawa, Trisha Zurek, David Wehinger, Peter Martin, Christopher D. In two dwarf novae - DX And and NS Per - absorption lines of the secondary star are newly detectedĪT Cnc: A SECOND DWARF NOVA WITH A CLASSICAL NOVA SHELL The latter has the spectrum of a very late type main sequence star with hydrogen emissions and might be a flare star showing extremely slow flares, while the CI UMa spectrum does not contain any emission line above the noise level. Two objects remain doubtful: CI UMa and MR Per. The classifications as dwarf novae could be confirmed in most cases. Spectroscopic observations of 12 dwarf novae are presented most of which hitherto unknown spectroscopically. International Nuclear Information System (INIS) Spectroscopy of poorly known northern dwarf novae. ![]()
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