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IPOPv2: Photoionization of Ni XIV – a test case

Published online by Cambridge University Press:  19 December 2013

F. Delahaye ,
P. Palmeri ,
P. Quinet  and
C.J. Zeippen
F. Delahaye
Affiliation:
LERMA, Observatoire de Paris, ENS, UPMC, UCP, CNRS, 5 place Jules Janssen, 92195 Meudon Cedex, France
P. Palmeri
Affiliation:
Astrophysique et Spectroscopie, Université de Mons – UMONS, 7000 Mons, Belgium
P. Quinet
Affiliation:
Astrophysique et Spectroscopie, Université de Mons – UMONS, 7000 Mons, Belgium IPNAS, Université de Liège, 4000 Liège, Belgium
C.J. Zeippen
Affiliation:
LERMA, Observatoire de Paris, ENS, UPMC, UCP, CNRS, 5 place Jules Janssen, 92195 Meudon Cedex, France
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Abstract

Several years ago, M. Asplund and coauthors (2004) proposed a revision of the Solar composition. The use of this new prescription for Solar abundances in standard stellar models generated a strong disagreement between the predictions and the observations of Solar observables. Many claimed that the Standard Solar Model (SSM) was faulty, and more specifically the opacities used in such models. As a result, activities around the stellar opacities were boosted. New experiments (J. Bailey at Sandia on Z-Pinch, The OPAC consortium at LULI200) to measure directly absorbtion coefficients have been realized or are underway. Several theoretical groups (CEA-OPAS, Los Alamos Nat. Lab., CEA-SCORCG, The Opacity Project – The Iron Project (IPOPv2)) have started new sets of calculations using different approaches and codes. While the new results seem to confirm the good quality of the opacities used in SSM, it remains important to improve and complement the data currently available. We present recent results in the case of the photoionization cross sections for Ni XIV (Ni13+) from IPOPv2 and possible implications on stellar modelling.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 63: New Advances in Stellar Physics: From Microscopic to Macroscopic Processes , 2013 , pp. 321 - 330
Copyright
© EAS, EDP Sciences, 2013

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References

Asplund, M., Grevesse, N., Sauval, A.J., Allen de Prieto, C., & Kiselman, D., 2004, A&A, 417, 751
Badnell, N.R., 2011, Comput. Phys. Comm., 182, 1528CrossRef
Badnell, N.R., Bautista, M.A., Butler, K., et al., 2005, MNRAS, 360, 458CrossRef
Badnell, N.R., & Seaton, M.J., 2003, J. Phys. B, Atom. Mol. Phys., 36, 4367CrossRef
Bailey, J.E., Rochau, G.A., Iglesias, C.A., et al., 2007, Phys. Rev. Lett., 99, 265002CrossRef
Bailey, J.E., Rochau, G.A., Mancini, R.C., et al., 2009, Phys. Plasmas, 16, 058101CrossRef
Berrington, K.A., Eissner, W.B., & Norrington, P.H., 1995, Comput. Phys. Comm., 92, 290CrossRef
Blancard, C., Cossé, P., & Faussurier, G., 2012, ApJ, 745, 10CrossRef
Delahaye, F., & Pinsonneault, M., 2005, ApJ, 625, 563CrossRef
Delahaye, F., & Pinsonneault, M.H., 2006, ApJ, 649, 529CrossRef
Delahaye, F., Pinsonneault, M.H., Pinsonneault, L., & Zeippen, C.J., 2010 [arXiv:1005.0423]
Eissner, W., Jones, M., & Nussbaumer, H. 1974, Comput. Phys. Commu., 8, 270CrossRef
Fano, H., 1961, Phys. Rev. A, 124, 1866CrossRef
Fu, J., Gorczyca, T.W., Nikolic, D., et al., 2008, Phys. Rev. A, 77, 032713CrossRef
Fuhr, J.R., Martin, G.A., & Wiese, W.L., 1988, J. Phys. Chem. Ref. Data, 17
Gilles, D., Turck-Chièze, S., Loisel, G., et al., 2011, High Energy Density Physics, 7, 312CrossRef
Hummer, D.G., Berrington, K.A., Eissner, W., et al. 1993, A&A, 279, 298
Kramida, A., Ralchenko, Y., Reader, J., & Team, N.A., 2013, NIST Atomic Spectra Database (ver. 5.1), [Online]. Available http://physics.nist.gov/asd [2013, September 19]. National Institute of Standards and Technology, Gaithersburg, MD
Montalban, J., & Miglio, A., 2008, Comm. Asteroseismol., 157, 160
Nahar, S.N., Pradhan, A. K., Chen, G.-X., & Eissner, W., 2011, Phys. Rev. A, 83, 053417CrossRef
Neuforge-Verheecke, C., Guzik, J.A., Keady, J.J., et al., 2001, ApJ, 561, 450CrossRef
Nussbaumer, H., & Storey, P.J., 1978, A&A, 64, 139
Pinsonneault, M.H., & Delahaye, F., 2009, ApJ, 704, 1174CrossRef
Richard, O., Michaud, G., & Richer, J., 2001, ApJ, 558, 377CrossRef
Rogers, F.J., & Iglesias, C.A., 1992, ApJ, 401, 361CrossRef
Shirai, T., Sugar, J., Musgrove, A., & Wiese, W.L., 2000, Spectral Data for Highly Ionized Atoms, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Kr, and Mo
Turck-Chièze, S., Loisel, G., Gilles, , et al., 2012, ed. Shibahashi, H., Takata, M. & Lynas-Gray, A.E., Progress in Solar-Stellar Physics with Helio- and Asteroseismology, 462 Astron. Soc. Pac. Conf. Ser., 95