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Close Binaries and the Abundance Discrepancy Problem in Planetary Nebulae

Wesson, R; Jones, D; García-Rojas, J; Boffin, H; Corradi, R; (2018) Close Binaries and the Abundance Discrepancy Problem in Planetary Nebulae. Galaxies , 6 (4) , Article 110. 10.3390/galaxies6040110. Green open access

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Abstract

Motivated by the recent establishment of a connection between central star binarity and extreme abundance discrepancies in planetary nebulae, we have carried out a spectroscopic survey targeting planetary nebula with binary central stars and previously unmeasured recombination line abundances. We have discovered seven new extreme abundance discrepancies, confirming that binarity is key to understanding the abundance discrepancy problem. Analysis of all 15 objects with a binary central star and a measured abundance discrepancy suggests a cut-off period of about 1.15 days, below which extreme abundance discrepancies are found.

Type: Article
Title: Close Binaries and the Abundance Discrepancy Problem in Planetary Nebulae
Open access status: An open access version is available from UCL Discovery
DOI: 10.3390/galaxies6040110
Publisher version: https://doi.org/10.3390/galaxies6040110
Language: English
Additional information: © 2018 by the Authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Keywords: planetary nebulae; binarity; abundances; stellar evolution
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery-pp.ucl.ac.uk/id/eprint/10083832
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