The thermal relaxation oscillation states of contact binaries

Details The thermal relaxation oscillation states of contact binaries The thermal relaxation oscillation states of contact binaries

Oct 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apj...434..277w&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 434, no. 1, p. 277-282

Astronomy and Astrophysics

Astrophysics

23

Binary Stars, Differential Equations, Statistical Analysis, Stellar Oscillations, Stellar Radiation, Thermal Stability, Convective Flow, Gravitational Effects, Main Sequence Stars, Stefan-Boltzmann Law

Scientific paper

A contact system almost certainly cannot exist in a state of static equilibrium undergoing periodic thermal relaxation oscillation (TRO). In this paper the TRO evidence is found by the calculation of 22 contact systems: A-sub and W-sub types are in expanding and contracting TRO states at the velocities of 25.04 and 3.10 m/yr, respectively. It is pointed out that the W-phenomenon is phase-dependent and corresponding to the contracting TRO phase. The corrected period-color diagram implies that the two kind systems have the same physical structure.

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