PN G054.2-03.4 light and velocity curves

The Necklace nebula is a bipolar, post-common-envelope planetary nebula, the central star of which has been shown to have a dwarf carbon star companion. We aim to understand the...项链星云（Necklace Nebula）是一类具有双极结构的共包层演化后行星状星云（post-common-envelope planetary nebula），其中心恒星已被证实存在一颗碳矮星（dwarf carbon star）伴星。我们旨在理解……