AGB stellar evolution and symbiotic stars

Details AGB stellar evolution and symbiotic stars AGB stellar evolution and symbiotic stars

Sep 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989mnras.240...63s&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 240, Sept. 1, 1989, p. 63-68.

Astronomy and Astrophysics

Astronomy

30

Asymptotic Giant Branch Stars, Infrared Stars, Mira Variables, Stellar Evolution, Stellar Mass Ejection, Symbiotic Stars, Hydroxyl Radicals, Planetary Nebulae, Stellar Envelopes, Stellar Winds

Scientific paper

Published data on the mass loss rates and periods of Miras and OH/IR stars have been compiled. There is a good correlation between mass loss rate and period and a smooth transition from Miras to OH/IR sources. At periods below 600 d, the mass loss increases exponentially but at longer periods it remains constant. As a Mira evolves from short to longer periods, its mass loss rate increases dramatically. Symbiotic stars cluster in the transition zone where Miras transform into OH/IR stars show the steepest mass loss increase. A subset of symbiotic stars is shown to be in an evolutionary phase near the onset of a superwind which ultimately leads to the formation of a planetary nebula.

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