Phase shifts between colours in pulsating stars

Details Phase shifts between colours in pulsating stars Phase shifts between colours in pulsating stars

Jul 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990ap%26ss.169..205g&link_type=abstract

(IAU, European Regional Astronomy Meeting on New Windows to the Universe, 11th, La Laguna, Spain, July 3-8, 1989) Astrophysics a

Astronomy and Astrophysics

Astrophysics

10

Gravitational Effects, Light Curve, Phase Shift, Temperature Dependence, Variable Stars, Optical Filters, Stellar Gravitation, Stellar Temperature

Scientific paper

Observational evidence is presented showing that the time of maximum light for pulsating stars depends on observed wavelength. This fact is well explained by assuming that starlight variations comets from both temperature and gravity variations. Conversely, from the time shifts between two colors, temperature and gravity variations can be derived, together with the phase lag between them.

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