Opacity tables for Cepheid variables

Details Opacity tables for Cepheid variables Opacity tables for Cepheid variables

Apr 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...371l..73i&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 371, April 20, 1991, p. L73-L75.

Statistics

Computation

121

Cepheid Variables, Computational Astrophysics, Metallicity, Opacity, Stellar Oscillations, Equations Of State, Stellar Models

Scientific paper

An attractive explanation of discrepancies between observations and theories of Cepheid variables has been the hypothesis of enhanced opacities. Here, new opacity tables for Population I and Population II stars computed using the OPAL code are presented. The tables are organized differently from previous work. Instead of rows and columns of constant temperature and density, the tables follow tracks of constant R = density/(temperature)-cubed. The results show significant opacity increases for temperatures and densities relevant to stellar pulsation models.

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