A new driving mechanism for stellar pulsations

Details A new driving mechanism for stellar pulsations A new driving mechanism for stellar pulsations

Mar 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...314..598p&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 314, March 15, 1987, p. 598-604.

Astronomy and Astrophysics

Astrophysics

21

Stellar Interiors, Stellar Oscillations, White Dwarf Stars, Stellar Models, Stellar Structure

Scientific paper

A new driving mechanism termed "convective blocking", a variation of the normal κ- and γ-mechanisms in Cepheids, is demonstrated using two models of hydrogen white dwarf stars. This mechanism is shown to be physically reasonable in the limit of frozen convection (implying the time scale for convective readjustment is long compared to a pulsation period). Some qualitative effects are given for when the two time scales are not as disparate.

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