Intrinsic amplitude and molecular absorption of Mira stars

Details Intrinsic amplitude and molecular absorption of Mira stars Intrinsic amplitude and molecular absorption of Mira stars

Feb 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978a%26a....63...53c&link_type=abstract

Astronomy and Astrophysics, vol. 63, no. 1-2, Feb. 1978, p. 53-61. Research supported by the Universidad Catolica de Chile.

Astronomy and Astrophysics

Astrophysics

15

Late Stars, M Stars, Mira Variables, Molecular Absorption, Stellar Luminosity, Variable Stars, Binary Stars, Condensation, Stellar Atmospheres, Stellar Magnitude, Titanium Oxides

Scientific paper

Interpretation of the luminous variation of the Mira stars results in an empirical relationship demonstrating that the visual amplitude is determined by the maximum magnitude variation and by the variation of the atmospheric molecular condensation of TiO in the time interval required by a star to change from minimum to maximum magnitude. The empirical relationship accounts for intrinsic characteristics of the Mira stars, such as the period-luminosity relation noted by Clayton and Feast (1969). In addition, the amplitude relationship may be applied to the SRa stars and probably to long-period variables in general.

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