Hostname: page-component-78c5997874-mlc7c Total loading time: 0 Render date: 2024-11-19T14:18:27.412Z Has data issue: false hasContentIssue false
  • English
  • Français

Close binary central stars and the abundance discrepancy - new extreme objects

Published online by Cambridge University Press:  08 August 2017

R. Wesson ,
D. Jones ,
J. García-Rojas ,
R. L. M. Corradi  and
H. M. J. Boffin
R. Wesson*
Affiliation:
Department of Physics and Astronomy, University College London, Gower St, London WC1E 6BT, UK European Southern Observatory, Alonso de Córdova 3107, Casilla 19001, Santiago, Chile
D. Jones
Affiliation:
Instituto de Astrofísica de Canarias, E-38205 La Laguna, Tenerife, Spain Departamento de Astrofísica, Universidad de La Laguna, E-38206 La Laguna, Tenerife, Spain
J. García-Rojas
Affiliation:
Instituto de Astrofísica de Canarias, E-38205 La Laguna, Tenerife, Spain Departamento de Astrofísica, Universidad de La Laguna, E-38206 La Laguna, Tenerife, Spain
R. L. M. Corradi
Affiliation:
Instituto de Astrofísica de Canarias, E-38205 La Laguna, Tenerife, Spain Departamento de Astrofísica, Universidad de La Laguna, E-38206 La Laguna, Tenerife, Spain Gran Telescopio CANARIAS S. A., c/ Cuesta de San José s/n, Breña Baja, E-38712 Santa Cruz de Tenerife, Spain
H. M. J. Boffin
Affiliation:
European Southern Observatory, Karl-Schwarzschild-Str. 2, 85738 Garching bei München, Germany
*
†E-mail: rw@nebulousresearch.org
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

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.

Keywords

planetary nebulae: generalcircumstellar matterstars: mass-lossstars: winds, outflowsbinaries: closeISM: abundances
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 12 , Symposium S323: Planetary Nebulae: Multi-Wavelength Probes of Stellar and Galactic Evolution , October 2016 , pp. 70 - 73
Copyright
Copyright © International Astronomical Union 2017 

References

Corradi, R. L. M., et al., 2011, in Asymmetric Planetary Nebulae 5 Conference.Google Scholar
Corradi, R. L. M., García-Rojas, J., Jones, D., & Rodríguez-Gil, P., 2015, APJ, 803, 99 CrossRefGoogle Scholar
Delgado-Inglada, G., Morisset, C., & Stasińska, G., 2014, MNRAS, 440, 536 CrossRefGoogle Scholar
Ercolano, B., 2009, MNRAS, 397, L69 CrossRefGoogle Scholar
García-Rojas, J., Peña, M., Morisset, C., Delgado-Inglada, G., Mesa-Delgado, A., & Ruiz, M. T., 2013, A&A, 558, A122 Google Scholar
García-Rojas, J., Corradi, R. L. M., Monteiro, H., Jones, D., Rodríguez-Gil, P., & Cabrera-Lavers, A., 2016, ApJ, 824, L27 CrossRefGoogle Scholar
Howarth, I. D., 1983, MNRAS, 203, 301 CrossRefGoogle Scholar
Jones, D., Wesson, R., García-Rojas, J., Corradi, R. L. M., & Boffin, H. M. J., 2016, MNRAS, 455, 3263 CrossRefGoogle Scholar
Liu, X.-W., Storey, P. J., Barlow, M. J., Danziger, I. J., Cohen, M., & Bryce, M., 2000, MNRAS, 312, 585 CrossRefGoogle Scholar
Liu, M. C., Leggett, S. K., Golimowski, D. A., Chiu, K., Fan, X., Geballe, T. R., Schneider, D. P., & Brinkmann, J., 2006, ApJ, 647, 1393 CrossRefGoogle Scholar
McNabb, I. A., Fang, X., Liu, X.-W., Bastin, R. J., & Storey, P. J., 2013, MNRAS, 428, 3443 CrossRefGoogle Scholar
Nicholls, D. C., Dopita, M. A., & Sutherland, R. S., 2012, ApJ, 752, 148 CrossRefGoogle Scholar
Peimbert, M., 1967, ApJ, 150, 825 CrossRefGoogle Scholar
Viegas, S. M. & Clegg, R. E. S., 1994, MNRAS, 271, 993 CrossRefGoogle Scholar
Wesson, R., 2016, MNRAS, 456, 3774 CrossRefGoogle Scholar
Wesson, R., Stock, D. J., & Scicluna, P., 2012, MNRAS, 422, 3516 CrossRefGoogle Scholar
Wyse, A. B., 1942, ApJ, 95, 356 CrossRefGoogle Scholar
van Dokkum, P. G., 2001, PASP, 113, 1420 CrossRefGoogle Scholar