Wesson, R;
Jones, D;
García-Rojas, J;
Corradi, RLM;
Boffin, HMJ;
(2016)
Close binary central stars and the abundance discrepancy - new extreme objects.
In: Liu, X and Stanghellini, L and Karakas, A, (eds.)
Planetary Nebulae: Multi-Wavelength Probes of Stellar and Galactic Evolution (Issue S323).
(pp. pp. 70-73).
Cambridge University Press
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Abstract
Recent work (Corradi et al. 2015, Jones et al. 2016) has shown that the phenomenon of extreme abundance discrepancies, where recombination line abundances exceed collisionally excited line abundances by factors of 10 or more, seem to be strongly associated with planetary nebulae with close binary central stars. To further investigate, we have obtained spectra of a sample of nebulae with known close binary central stars, using FORS2 on the VLT, and we have discovered several new extreme abundance discrepancy objects. We did not find any non-extreme discrepancies, suggesting that a very high fraction of nebulae with close binary central stars also have an extreme abundance discrepancy.
| Type: | Proceedings paper |
|---|---|
| Title: | Close binary central stars and the abundance discrepancy - new extreme objects |
| Event: | International Astronomical Union Symposia no. 323, 10-14 October 2016, Beijing, China |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1017/S1743921317001958 |
| Publisher version: | https://doi.org/10.1017/S1743921317001958 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | planetary nebulae: general; circumstellar matter; stars: mass-loss; stars: winds, outflows; binaries: close; ISM: abundances |
| UCL classification: | UCL 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.ucl.ac.uk/id/eprint/1532087 |
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