Abell 30 - A binary central star among the born-again planetary nebulae
| Autor: | Todd C. Hillwig, David Jones, George H. Jacoby |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Physics
Brightness 010308 nuclear & particles physics FOS: Physical sciences Binary number Astronomy and Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics Star (graph theory) Light curve 01 natural sciences Planetary nebula Stars Astrophysics - Solar and Stellar Astrophysics Space and Planetary Science 0103 physical sciences Binary star Astrophysics::Solar and Stellar Astrophysics Astrophysics::Earth and Planetary Astrophysics Ejecta 010303 astronomy & astrophysics Astrophysics::Galaxy Astrophysics Solar and Stellar Astrophysics (astro-ph.SR) |
| Zdroj: | Monthly Notices of the Royal Astronomical Society: Letters. 498:L114-L118 |
| ISSN: | 1745-3933 1745-3925 |
| Popis: | 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. Comment: 5 pages, 3 figures, accepted for publication in MNRAS Letters |
| Databáze: | OpenAIRE |
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