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تسجيل مستخدم جديدAbell 30 -- A Binary Central Star Among the Born-Again Planetary Nebulae
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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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