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Atomic processes in planetary nebulae

Published online by Cambridge University Press:  30 August 2012

Xiaowei Liu
Xiaowei Liu*
Affiliation:
Kavli Institute for Astronomy and Astrophysics and Department of Astronomy, School of Physics, Peking University, Beijing 100871, P. R. China email: [email protected]
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Abstract

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Progress in the study of the atomic processes in planetary nebulae (PNe) is reviewed, focusing on the literature published since the last IAU symposium on PNe five years ago. High quality photoionization cross sections and recombination coefficients are now available for the first six ions of the trans-iron elements selenium and krypton, enabling robust modeling of their ionization structure and consequently converting the measured ionic abundances to elemental abundances. Major progress has been achieved in utilizing the recombination spectra of helium and heavy element ions to probe the nebular physical conditions. New ab initio, density-dependent effective recombination coefficients have been calculated for the recombination spectra of O ii and N ii, down to very low temperatures (~ 100–300 K). Plasma diagnostics based entirely on those heavy element recombination lines are developed and applied to the observations. It is shown that these heavy element recombination lines originate predominately from cold plasmas of temperatures ~ 1,000 K, in agreement with the predictions of the bi-abundance model that has been proposed to explain the dichotomy of nebular plasma diagnostics and abundance determinations using collisional excited lines (CELs) on the one hand and optical recombination lines (ORLs) on the other.

Keywords

Atomic processesatomic dataplanetary nebulae: general
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 7 , Symposium S283: Planetary Nebulae: An Eye to the Future , July 2011 , pp. 131 - 138
Copyright
Copyright © International Astronomical Union 2012

References

Barker, T. 1978, ApJ, 219, 914 CrossRefGoogle Scholar
Bastin, R. & Storey, P. J. 2005, in: Szczerba, R., Stasinska, G. & Gorny, S. K. (eds.), Planetary Nebulae as Astronomical Tools (Springer, New York), AIP Conf. Proc., Vol. 804, p.63 Google Scholar
Bastin, R. & Storey, P. J. 2006, in: Barlow, M. J. and Méndez, R. H. (eds.), Planetary Nebulae in our Galaxy and Beyond (Cambridge: Cambridge University Press), p. 369 Google Scholar
Bautista, M. A. 2006, in: Barlow, M. J. and Méndez, R. H. (eds.), Planetary Nebulae in our Galaxy and Beyond (Cambridge: Cambridge University Press), p. 203 Google Scholar
Bautista, M. A., Ballance, C. P., & Quinet, P. 2010, ApJ, 718, L189 CrossRefGoogle Scholar
Chen, S. H., Qing, B., & Li, J. M. 2007, Phys. Rev. A, 76, 042507 CrossRefGoogle Scholar
Del Zanna, G., Storey, P. J., & Mason, H. E. 2010, A&A, 514, 40 Google Scholar
Fang, X. & Liu, X. W. 2011, MNRAS, 415, 181 CrossRefGoogle Scholar
Fang, X., Storey, P. J., & Liu, X. W. 2011, A&A, 530, 18 Google Scholar
Grandi, S. A. 1976, ApJ, 206, 658 CrossRefGoogle Scholar
Karakas, A. I., van Raai, M. A., Lugaro, M., Sterling, N. C., & Dinerstein, H. L. 2009, ApJ, 690, 1130 CrossRefGoogle Scholar
Liu, X. W. 2003, in: Kwok, S., Dopita, M. & Sutherland, R. (eds.), Planetary Nebulae: Their Evolution and Role in the Universe (San Francisco: ASP), p.339 Google Scholar
Liu, X. W. 2006, in: Barlow, M. J. and Méndez, R. H. (eds.), Planetary Nebulae in our Galaxy and Beyond (Cambridge: Cambridge University Press), p. 219 Google Scholar
Liu, X. W. & Danziger, I. J. 1993, MNRAS, 263, 256 CrossRefGoogle Scholar
Liu, X. W., Luo, S.-G., Barlow, M. J., Danziger, I. J., & Storey, P. J. 2001, MNRAS, 327, 141 CrossRefGoogle Scholar
Liu, X. W., Storey, P. J., Barlow, M. J., Danziger, I. J., Cohen, M., & Bryce, M. 2000, MNRAS, 312, 585 CrossRefGoogle Scholar
Mesa-Delgado, A., Esteban, C., García-Rojas, J., Luridiana, V., Bautista, M., Rodríguez, M., López-Martín, L., & Peimbert, M. 2009, MNRAS, 395, 855 CrossRefGoogle Scholar
Nahar, S. N. 2003, in: Kwok, S., Dopita, M. & Sutherland, R. (eds.), Planetary Nebulae: Their Evolution and Role in the Universe (San Francisco: ASP), p.325 Google Scholar
Peimbert, M. 1971, Bol. Obs. Tonantzintla Tacubaya, 6, 29 Google Scholar
Péquignot, D. 2008, A&A, 478, 371 Google Scholar
Ruiz, M. T., Peimbert, A., Peimbert, M., & Esteban, C. 2003, ApJ, 595, 247 CrossRefGoogle Scholar
Sharpee, B., Zhang, Y., Williams, R., Pellegrini, E., Cavagnolo, K., Baldwin, J. A., Phillips, M., & Liu, X. W. 2007, ApJ, 659, 1265 CrossRefGoogle Scholar
Sterling, N. C. 2011, A&A, 533, 62 Google Scholar
Sterling, N. C. & Stancil, P. C. 2011, A&A, 535, A117 Google Scholar
Sterling, N. C. & Witthoeft, M. C. 2011, A&A, 529, 147 Google Scholar
Storey, P. J. & Zeippen, C. J. 2010, A&A, 511, 78 Google Scholar
Tayal, S. S. 2007, ApJS, 171, 331 CrossRefGoogle Scholar
Tayal, S. S. 2011, ApJS, 195, 11 CrossRefGoogle Scholar
Tayal, S. S. & Zatsarinny, O. 2010, ApJS, 188, 32 CrossRefGoogle Scholar
Yuan, H.-B., Liu, X. W., Péquignot, D., Rubin, R. H., Ercolano, B., & Zhang, Y. 2011, MNRAS, 411, 1035 CrossRefGoogle Scholar
Zhang, Y. & Liu, X. W. 2002, MNRAS, 337, 499 CrossRefGoogle Scholar
Zhang, Y. & Liu, X. W. 2003, A&A, 404, 545 Google Scholar
Zhang, Y. & Liu, X. W. 2005, ApJ, 631, L61 CrossRefGoogle Scholar
Zhang, Y., Liu, X. W., Liu, Y., & Rubin, R. H. 2005, MNRAS, 358, 457 CrossRefGoogle Scholar
Zhang, Y., Yuan, H. B., Hua, T. T., Liu, X. W., Nakashima, J., & Kwok, S. 2009, ApJ, 695, 488 CrossRefGoogle Scholar