Contact binary stars of the W UMa type as distance tracers
classification
🌌 astro-ph
keywords
starscontactdistanceabundantbinariesbinarycolourcurrently
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Contact binaries can be used for distance determinations of stellar systems. They are easy to discover and identify and are very abundant among solar-type stars, particularly for M_V > +3. The period - luminosity - colour (PLC) relations have similar properties to those for pulsating stars and can currently predict individual values of M_V to about +/-0.25 mag.
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