Resonant interaction in common envelopes

Details Resonant interaction in common envelopes Resonant interaction in common envelopes

Feb 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...367..593s&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 367, Feb. 1, 1991, p. 593-600.

Astronomy and Astrophysics

Astrophysics

13

Binary Stars, Brown Dwarf Stars, Red Giant Stars, Stellar Envelopes, Stellar Oscillations, Astronomical Models, Astronomical Spectroscopy, Planetary Nebulae, Stellar Models

Scientific paper

The resonant interaction between an orbiting low-mass secondary star and the pulsational modes of the primary in a common envelope binary system is studied. When the secondary is very close to the envelope, and especially if it is inside the envelope, i.e., the system is in a common envelope phase, a rich spectrum of both g- and p-modes can be excited. During the common envelope phase high-order and high harmonic p-modes become important. By means of a simple one-zone model, the amplitudes of the forced oscillations are approximately estimated. It is claimed that if several conditions are met, then a brown dwarf secondary can cause nonnegligible axisymmetrical mass loss through its resonant interaction with a red giant primary's envelope. One implication of this for elliptical planetary nebulae is discussed.

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