XO-2N and XO-2S equivalent widths

The chemical composition of exoplanet host stars is an important factor in understanding the formation and characteristics of their orbiting planets. The best example of this to...系外行星宿主恒星（exoplanet host stars）的化学成分，是理解其环绕行星形成过程与物理特性的关键因素。目前对此最具代表性的例证为……