Cn 1-1 (= HD 330036): Planetary Nebula or Symbiotic Star?
Observations are reported for Cn 1-1 (=HD 330036). This object is one of many that have been classified both as a symbiotic star and a planetary nebula. The purpose of this study is to investigate the physical properties and evolutionary status of Cn 1-1. It is concluded that Cn 1-1 is a dense planetary nebula in a binary system.
KeywordsCentral Star Planetary Nebula Interstellar Extinction Optical Emission Spectrum Symbiotic Star
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