Hostname: page-component-586b7cd67f-rcrh6 Total loading time: 0 Render date: 2024-11-26T12:57:55.514Z Has data issue: false hasContentIssue false
  • English
  • Français

Atomic Energy Levels and Spectra: Astronomical Needs

Published online by Cambridge University Press:  30 March 2016

Charles R. Cowley
Charles R. Cowley*
Affiliation:
University of Michigan, Dominion Astrophysical Observatory

Extract

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.

The astronomer’s requirements for atomic data are so massive that it is not easy to approach this subject in a way that will sound responsible to someone who is not thoroughly familiar with the situation. The simple truth is that there is hardly an atomic species, neutral or ionized, for which additional data is not urgently needed in some domain of astronomy. This comes about partly because of the high temperatures and very long path lengths in astronomical objects which can make them extremely powerful light sources. More generally, we can say that conditions in the astronomer’s violent universe manage to render large volumes of phase space available to the atoms which occupy it.

While the truth is that we need to know “everything,” one task of the present paper is to cast this need in a pragmatic form. This will be done by reviewing certain problems in the very recent history of astronomical spectroscopy, where real progress has come about as a result of new work on atomic spectra. Many of the illustrative problems are taken from the spectroscopy of upper main sequence, chemically peculiar or CP stars.

Type
Joint Commission Meetings
Information
Highlights of Astronomy , Volume 6: Highlights of Astronomy. As presented at the XVIIIth General Assembly of the IAU, 1982 , 1983 , pp. 761 - 774
Copyright
Copyright © Reidel 1983

References

Adelman, S.J.: 1974, Ap. J. Suppl. 28, p. 51.Google Scholar
Adelman, S.J. and Shore, S.N.: 1981, Pub. Astron. Soc. Pac. 93 p. 85.Google Scholar
Anderson, T., Poulsen, O., Ramanujam, P.S., and Petkov, A.P.: 1975, Solar Phys. 44, p. 257.Google Scholar
Arnesen, A., Bengtsson, R., Hallln, J., Lindskog, C., Nordllng, C., and Noreland, T.: 1977, Phys. Scr. 16, p. 31.Google Scholar
Bell, R.A. and Gustafsson, B.: 1978, Astron. and Ap. Suppl. 34, p. 229.Google Scholar
Bidelman, W.P.: 1982, private communication.Google Scholar
Conway, J.G. and Worden, E.F.: 1970, Univ. Calif. Radiation Lab., UCRL-19944.Google Scholar
Corliss, C.H.: 1982, private commuinication.Google Scholar
Corliss, C. and Sugar, J.: 1979, J. Phys. Chem. Ref. Data 8, p. 1.Google Scholar
Cowan, R.D.: 1981, The Theory of Atomic Structure and Spectra, Univ. of Calif. Press, Berkeley.Google Scholar
Cowley, C.R.: 1982, Mon. Not. Roy. Astron. Soc., in press.Google Scholar
Cowley, C.R. and Corliss, C.H.: 1982, preprint.Google Scholar
Cowley, C.R.: 1981, Ap. J. 246, p. 238.Google Scholar
Cowley, C.R. and Arnold, C.N.: 1978, Ap. J. 226, p. 420.Google Scholar
Cowley, C.R., Aikman, G.C.L., and Fisher, W.A.: 1977, Pub. Dora. Ap. Obs. 15, p. 37.Google Scholar
Cowley, C.R., Aikman, G.C.L., and Hartoog, M.R.: 1976, Ap. J. 206, p. 196.Google Scholar
Cowley, C.R. and Rice, J.B.: 1981, Nature 294, p. 636.Google Scholar
Dworetsky, M.M.: 1982, private communication.Google Scholar
Dworetsky, M.M., Trueman, M.R.G., and Stickland, D.J.: 1980, Astron. and Ap. 85, p. 138.Google Scholar
Hansen, J.E., Ziegenbein, B., Lincke, R., and Kelly, H.P.: 1977, J. Phys. B. 10, p. 37.Google Scholar
Hussain, R.: 1973, Ph.D. thesis, The Johns Hopkins University.Google Scholar
Johansson, S.: 1982, material presented to IAU Commission 14 at the 18th General Assembly, Patras, Greece.Google Scholar
Johansson, S.: 1978, Phys. Scripta 18, p. 217.Google Scholar
Karner, C., Meyer, G., Ruland, W., Sahm, A., Trager, F., and zu Putlitz, G.: 1981, in “Upper Main Sequence Chemically Peculiar Stars”, Communications presented at the 23rd International Astrophyslcal Colloquium, Liege, Institute d’Astrophysique, p. 223.Google Scholar
Kelly, R.L. and Palumbo, L.J.: 1973, “Atomic and Ionic Emission Lines Below 2000 Angstroms”, U.S. Government Printing Office, Washington, D.C. Google Scholar
Kurucz, R.L.: 1981, Smith. Ap. Obs. Spec. Rept. 390.Google Scholar
Kurucz, R.L. and Avrett, E.H.: 1981, Smith. Ap. Obs. Spec. Rept. 391.Google Scholar
Kurucz, R.L. and Peytremann, E.: 1975, Smith, Ap. Obs. Spec. Rept. 362.Google Scholar
Lage, C.S., and Whaling, W.: 1976, J. Quant. Spec. Rad. Trans. 16, p. 537.Google Scholar
Leckrone, D.S.: 1981, Ap. J. 250, p. 687.Google Scholar
Little, S.J. and Aller, L.H.: 1970, Ap. J. Suppl. 22, p. 85.Google Scholar
Maier, R.S. and Whaling, W.: 1977, J. Quant. Spectr. Rad. Trans. 199, p. 43.Google Scholar
Martin, W.C., Zalubas, R., and Hagan, L.: 1978, “Atomic Energy Levels - The Rare Earths”, NSRDS-NBS 60, U.S. Government Printing Office, Washington, D.C. Google Scholar
Moore, C.E., Minnaert, M.G.J., and Houtgast, J.: 1966, N.B.S. Monograph 61.Google Scholar
Reader, J. and Sugar, J.: 1975, J. Phys. Chem. Ref. Data 4, p. 353.Google Scholar
Sugar, J.: 1978, private communeation.Google Scholar
Sugar, J. and Corliss, C.H.: 1977, J. Phys. Chem. Ref. Data 6, p. 317.Google Scholar
Sugar, J. and Spectro, N.: 1974, J. Opt. Soc. Am. 64, p. 1484.CrossRefGoogle Scholar