Bibcode
Wesson, R.; Jones, D.; García-Rojas, J.; Corradi, R. L. M.; Boffin, H. M. J.
Referencia bibliográfica
Planetary Nebulae: Multi-Wavelength Probes of Stellar and Galactic Evolution, Proceedings of the International Astronomical Union, IAU Symposium, Volume 323, pp. 70-73
Fecha de publicación:
10
2017
Número de citas
8
Número de citas referidas
4
Descripción
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.