The Necklace planetary nebula: equatorial and polar outflows from a post-common-envelope system
Abstract
We present the discovery of a new planetary nebula from the IPHAS survey. The remarkable morphology of its inner regions, which display a bright knotty ring surrounded by high excitation gas, led to the object's nickname, the ``Necklace nebula''. The finding of a binary central star with an orbital period of 1.16 days makes it a new clear example of strongly aspherical mass deposition - both in the form of a slow equatorial outflow and fast polar ejections - resulting from the common-envelope phase.
- Publication:
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Asymmetric Planetary Nebulae 5 Conference
- Pub Date:
- 2011
- Bibcode:
- 2011apn5.confE.344C
- Keywords:
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- Planetary nebulae;
- Binaries