Pulsation Modes and Fundamental Parameters of Mira Stars

Details Pulsation Modes and Fundamental Parameters of Mira Stars Pulsation Modes and Fundamental Parameters of Mira Stars

Jun 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006javso..35...81b&link_type=abstract

The Journal of the American Association of Variable Star Observers, Vol. 35, No. 1, p. 81

Physics

Scientific paper

Linear pulsation models are generated using the absolute magnitudes of long period variables (LPVs) in the Large Magellanic Cloud (LMC) and in the solar neighborhood (HIPPARCOS parallaxes), as well as effective temperature estimates. The results support the hypothesis that linear modeling may be used provided that a lower mixing length (possibly evolving along the asymptotic giant branch (AGB)) is adopted, as suggested by lightcurve analysis. Most Miras are found pulsating in the first overtone, though a significant number may be pulsating in the fundamental mode. Individual masses are derived. Several stars seem to depart from the standard core-mass-luminosity relation because of thermal pulsation.

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