Abell 30 - A binary central star among the born-again planetary nebulae

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⊙) with nearly no hydrogen. Abell 30, the archetype of the class, also belongs to a small subset of planetary nebulae that exhibit extreme...

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Veröffentlicht in:Monthly notices of the Royal Astronomical Society. Letters 2020-10, Vol.498 (1), p.L114-L118
Hauptverfasser: Jacoby, George H, Hillwig, Todd C, Jones, David
Format: Artikel
Sprache:eng
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Zusammenfassung: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⊙) 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 d 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.
ISSN:1745-3925
1745-3933
DOI:10.1093/mnrasl/slaa138