Confrontation between power spectra of Mira stars and theoretical models

Details Confrontation between power spectra of Mira stars and theoretical models Confrontation between power spectra of Mira stars and theoretical models

Sep 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...289..429b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 289, no. 2, p. 429-440

Astronomy and Astrophysics

Astrophysics

30

Asymptotic Giant Branch Stars, Mira Variables, Power Spectra, Stellar Models, Stellar Oscillations, Cycles, Fourier Analysis, Harmonics, Modes, Periodic Variations, Stellar Envelopes

Scientific paper

The observed period spectrum of two typical Mira variables (S CMi and chi Cyg) is confronted with theoretical nonadiabatic linear models. It turns out that almost all observed frequencies in the cleaned spectrum of these two chosen variables can be explained as radial pulsational modes, their harmonics and combinations if the dominant mode is identified with the first overtone. This procedure is shown to be a powerful tool for mass and luminosity determination of Long Period Variables.

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