Monthly Notices of the Royal Astronomical Society · 4 September 2026 · From issue 32
Fundamental effective temperature measurements for eclipsing binary stars - IX. Characterisation of 5 solar-type eclipsing binaries with M-dwarf companions
Five double-star systems now have star sizes and masses measured to within a fraction of a percent.
Axel Hahlin, Pierre F L Maxted et al.
Five pairs of stars were measured with very high precision. Each pair has a sun-like star and a small dim red star circling each other. Scientists used dips in starlight, when one star crosses in front of the other, to work out each star's size, mass, and heat. The faint red star barely changes the light, so the pair looks almost like one single star, which makes it a great test case for checking other telescopes.
How precisely the size, mass, and heat of each star pair were pinned down.
Only 5 star systems studied, no broader claim yet.
Integrity screen: passed (3 checks) Checked 6 September 2026. Retraction record: none. DOI resolves at doi.org. Metadata record found (Monthly Notices of the Royal Astronomical Society). Read the source
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