Is the metal contribution to the astrophysical opacity incorrect?

Details Is the metal contribution to the astrophysical opacity incorrect? Is the metal contribution to the astrophysical opacity incorrect?

Aug 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...283..264m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 283, Aug. 1, 1984, p. 264-272.

Physics

Atomic Physics

40

Cepheid Variables, Metallicity, Opacity, Stellar Composition, Stellar Models, Atomic Energy Levels, Atomic Physics, Atomic Spectra, Oscillator Strengths, Photoionization, Stellar Cores, Stellar Oscillations

Scientific paper

Numerical tests by Simon (1982) have indicated that an arbitrary increase (by a factor of two or three) in the contribution of a metal (with an atomic number greater than two) to the opacity leads to Cepheid models that, in some aspects, are in better agreement with observations than models using the standard opacity. It is shown that such a large increase in opacity is incompatible with atomic physics.

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