Hostname: page-component-586b7cd67f-t7fkt Total loading time: 0 Render date: 2024-11-30T12:31:29.125Z Has data issue: false hasContentIssue false
  • English
  • Français

The Iron Project: Atomic Data for Fe I-Fe VI

Published online by Cambridge University Press:  12 April 2016

Manuel A. Bautista ,
Sultana N. Nahar ,
Jianfang Peng ,
Anil K. Pradhan  and
Hong Lin Zhang
Manuel A. Bautista
Affiliation:
Department of Astronomy, Ohio State University, 174 West 18th Avenue, Columbus, OH 43210, USA
Sultana N. Nahar
Affiliation:
Department of Astronomy, Ohio State University, 174 West 18th Avenue, Columbus, OH 43210, USA
Jianfang Peng
Affiliation:
Department of Astronomy, Ohio State University, 174 West 18th Avenue, Columbus, OH 43210, USA
Anil K. Pradhan
Affiliation:
Department of Astronomy, Ohio State University, 174 West 18th Avenue, Columbus, OH 43210, USA
Hong Lin Zhang
Affiliation:
Department of Astronomy, Ohio State University, 174 West 18th Avenue, Columbus, OH 43210, USA

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 progress in large scale computations of photoionization cross sections, radiative transitions probabilities, and collision strengths for the lowest ionization stages of Iron, i.e., Fe I-VI, are reported. These results are part of an international collaboration called the IRON Project. The present results exhibit large differences with respect to data currently in use and is expected to be of importance in the study of astrophysical objects in the UV and the EUV.

Type
XIII. Plasma Diagnostics
Information
International Astronomical Union Colloquium , Volume 152: Astrophysics in the Extreme Ultraviolet , 1996 , pp. 577 - 581
Copyright
Copyright © Kluwer 1996

References

Bautista, M.A. & Pradhan, A.K. 1995a, Photoionization of neutral Iron, J. Phys. B Lett., in pressCrossRefGoogle Scholar
Bautista, M.A. & Pradhan, A.K. 1995b, Atomic Data from the Iron Project XIV, Electron excitation rates and emissivity ratios for forbidden transition in Ni II and Fe II, A&A, submittedGoogle Scholar
Berrington, K.A., Burke, P.G., Hibbert, A., Mohan, M., & Baluja, K.L. Electron impact excitation of Fe+ using the R-matrix method incorporating fine-structure effects, J. Phys. B: At. Opt. Phys., 21, 339 Google Scholar
Berrington, K.A., Zeippen, C.J., Le Dourneuf, M., Eissner, W., & Burke, P.G. Electron impact excitation of Fe2+: I. A 17-level fine-structure calculation, J. Phys. B: At. Opt. Phys., 24, 3467 Google Scholar
Bell, R.A., Paltoglou, G., & Tripicco, M.J. 1994, The calibration of synthetic colours, MNRAS, 268, 771 Google Scholar
Cunto, W., Mendoza, C., Ochsenbein, F., & Zeippen, C.J. TOPbase at the CDS, A&A, 275, L5 Google Scholar
Hummer, D.G., Berrington, K.A., Eissner, W., Pradhan, A.K., Saraph, H.E., & Tully, J.A. 1993, Atomic data from the IRON Project, A&A, 279, 298 Google Scholar
Keenan, F.P., Hibbert, A., Burke, P.G., & Berrington, K.A. 1988, Fine-structure populations for the 6 D ground state of Fe II, ApJ, 332, 539 Google Scholar
Kurucz, R.L. 1981, Semiempirical calculation of gf values: Fe II, Smithsonian Astrophysical Observatory Special Report 390, Cambridge Google Scholar
Kurucz, R.L. 1991, private communicationGoogle Scholar
Nahar, S.N. 1995, Atomic Data from the Iron Project VII. Radiative dipole transitions probabilities for Fe II, A&A, 293, 967 Google Scholar
Nahar, S.N. & Pradhan, A.K. 1994, Atomic data for opacity calculations: XX. Photoion-ization cross sections and oscillator strengths for Fe II, J. Phys. B: At. Opt. Phys., 27, 429 Google Scholar
Nahar, S.N. & Pradhan, A.K. 1995, Unified electron-ion recombination rate coefficients of Silicon and Sulfur ions, ApJ, in pressCrossRefGoogle Scholar
Pradhan, A.K. 1995, these proceedingsGoogle Scholar
Reilman, R.F. & Manson, S.T. 1979, Photoabsorption cross section for positive atomic ions with Z ≤ 30, AJSS, 40, 815 Google Scholar
Sawey, P.M.J. & Berrington, K.A. 1992, Atomic data for opacity calculations: XV. Fe-IV, J. Phys. B: At. Opt. Phys., 25, 1451 CrossRefGoogle Scholar
Seaton, M.J., Zeippen, C.J., Tully, A.K., Pradhan, A.K., Mendoza, C., Hibbert, A., & Berrington, K.A. 1992, The Opacity project—Computation of atomic data, Rev. Mexicana Astron. Astrof., 25, 19 Google Scholar
Vennes, S. 1995, these proceedingsGoogle Scholar
Verner, D.A., Yakovlev, D.G., Band, I.M., & Trzhaskovskaya, M.B. 1993, At. Data Nucl. Data Tables, 55, 233 Google Scholar
Zhang, H.L. & Pradhan, A.K. 1995a, Atomic Data from the Iron Project VI. Collision strengths and rate coefficients for Fe II, A&A, 293, 953 Google Scholar
Zhang, H.L. & Pradhan, A.K. 1995b, Relativistic and electron correlation effects in electron impact excitation of Fe2+, J. Phys. B: At. Opt. Phys., submittedGoogle Scholar