Understanding the chemical composition of cool stars in the solar neighborhood is vital to answering key formation and evolutionary questions for not only our local universe, but also for planets orbiting those stars. (www2.lowell.edu)
We then compare the number of observed planet candidates to the number of stars around which such planets could have been detected in order to estimate the planet occurrence rate around cool stars. (arxiv.org)
A spin - down clock for cool stars from observations of a 2.5 - billion - year - old cluster. (nature.com)