Abstract
view Abstract Citations (27) References (20) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS White dwarfs seimology. Hansen, C. J. ; van Horn, H. M. Abstract A cool, 1-solar mass, Fe-56 white dwarf model is analyzed to determine the effects of a shear-supporting crystalline core upon the nonradial oscillation periods in the Cowling approximation. Both spheroidal and toroidal modes with l = 1, 2, and 3 have been calculated. Of the spheroidal oscillations, only the g-modes are seriously shifted in frequency. The toroidal oscillations, which have nonzero frequencies because of the nonzero shear modulus of the solid core, have periods intermediate between those of the p- and g-modes. None of the low-order oscillation modes have frequencies comparable to those observed in the ZZ Ceti white dwarfs. Publication: The Astrophysical Journal Pub Date: October 1979 DOI: 10.1086/157386 Bibcode: 1979ApJ...233..253H Keywords: Metallic Stars; Seismology; Stellar Models; Stellar Motions; Stellar Structure; White Dwarf Stars; Approximation; Cores; Iron; Metal Crystals; Oscillations; Shear Properties; Astrophysics; Oscillations:White Dwarfs; White Dwarfs:Interiors; White Dwarfs:Models full text sources ADS |
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