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arXiv · 2008.01488

Abell 30 -- A Binary Central Star Among the Born-Again Planetary Nebulae

George H. Jacoby·Todd C. Hillwig·David Jones
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Abstract

Eight planetary nebulae have been identified as `born-again', a class of object typified by knotty secondary ejecta having low masses ($\sim$$10^{-4}$ M$_{\odot}$) with nearly no hydrogen. Abell 30, the archetype of the class, also belongs to a small subset of planetary nebulae that exhibit extreme abundance discrepancy factors (where Abell 30 is the most extreme), a phenomenon strongly linked to binary star interactions. We report the presence of light curve brightness variations having a period of 1.060 days that are highly suggestive of a binary central star in Abell 30. If confirmed, this detection supports the proposed link between binary central stars and extreme abundance discrepancies.

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George H. Jacoby, Todd C. Hillwig, David Jones. 2020-08-04. Abell 30 -- A Binary Central Star Among the Born-Again Planetary Nebulae. https://doi.org/10.1093/mnrasl%2Fslaa138

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