universetoday.com/articles/astronomers-observe-the-limb-darkening-effect-on-nearby-stars Astronomers Observe The Limb Darkening Effect On Nearby Stars
The CHARA Array just measured limb darkening directly on 31 stars beyond the Sun, and the numbers don't match theory. Longer infrared wavelengths showed 38% weaker darkening than shorter ones, nearly double the 20% difference stellar atmosphere models predicted.
— via Universe Today, Brian Koberlein
