The stellar population of CVn I consists mainly of old stars formed more than 10 billion years ago. The metallicity of these old stars is also very low at , which means that they contain 110 times less heavy elements than the Sun.
The stellar population of CVn I is primarily composed of ancient stars that formed more than 10 billion years ago. These old stars have a very low metallicity, meaning they contain 110 times less heavy elements than the Sun.